Moss sperm use flagella for motility. Moss sperm are unique in having flagella which are used to move and swim towards the egg cell to fertilize it.
This reflects the evolution of land plants from green algae, as mosses are one of the earliest land plants and their sperm show similarities to the sperm of green algae, which also use flagella for motility. This suggests that the flagella-based motility system was retained in mosses as they made the transition from aquatic to terrestrial environments, and it is still present in the moss sperm today.Moss sperm are the male reproductive cells of mosses, which are a group of non-vascular plants that are considered to be one of the earliest land plants. Moss sperm are unique in having flagella, which are whip-like structures that are used for motility. The flagella are used to move and swim towards the egg cells to fertilize them. This is similar to the sperm of green algae, which also use flagella for motility.
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It reflects the evolution of land plants from green algae in that algal spores have flagella, as do green algal spores. Here option B is the correct answer.
Moss sperm, like the sperm of many other land plants, move using flagella. This is the same motility structure that is used by the sperm of green algae, which are believed to be the ancestors of land plants.
The presence of flagella in both moss sperm and green algae sperm suggests that this motility structure was present in the common ancestor of these two groups and was retained in land plants as they evolved from green algae.
Complete question:
What structure do moss sperm used for motility, and how does that reflect the evolution of land plants from green algae? what structure do moss sperm used for motility, and how does that reflect the evolution of land plants from green algae?
A - moss sperm moves by amoeboid motion and doesn't have a special structure, as do the sperm of green algae.
B - moss sperm have flagella, as do the sperm of green algae.
C - moss sperm moves by gliding motility and doesn't have a special structure, as do the sperm of green algae.
D - moss sperm have cilia, as do the sperm of green algae.
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Which blood vessel delivers blood to the right atrium?
a. vena cava
b. pulmonary artery
c. pulmonary trunk
d. pulmonary vein
The a. vena cava delivers blood to the right atrium.
Your upper body's big vein feeds the right atrium of your heart with blood that is low in oxygen. The right side of your heart is where your inferior vena cava and superior vena cava are located. Your superior vena cava is formed by the union of your right and left innominate (or brachiocephalic) veins.
The right atrium, which receives all of the blood with low oxygen content, is where your superior vena cava enters. It is located adjacent to the right side of your sternum. The body's head end is drained by the anterior vena cava, also called the precava, whereas the tail or posterior end is drained by the posterior vena cava, also called the postcava.
The superior and inferior venae cavae in humans are the names of these veins, respectively.
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Which type of afferent neuron delivers information to the brain about movement at joints?A.ChemoreceptorsB.MechanoreceptorsC.Proprioceptors
C.Proprioceptors: Proprioceptors are afferent neurons that deliver information to the brain about movement at joints, as well as the position of the body in space. They are responsible for the sense of body awareness and are triggered by changes in muscle tension, joint position and movement.
Proprioceptors are afferent neurons that deliver information to the brain about movement at joints. These neurons detect changes in the body's position, sense of balance, and the force of muscular contractions. Proprioceptors are located in muscles, tendons, and joints, and they act as sensors of movement and position.
Proprioception is essential for the brain to be able to understand the body's position in space. Proprioceptors detect changes in position and send signals to the brain. This allows us to maintain balance, coordinate voluntary movements, and to know the location of our limbs and joints.
Proprioceptors are sensitive to the force of muscular contractions, so they can tell the brain when muscles are contracting, and when they are being stretched. This helps the brain to coordinate movement, and to maintain balance.
Proprioceptors are also sensitive to changes in the environment. They can detect when a surface is slippery, or when the ground has changed. This helps us to adjust our posture and gait to stay upright.
Proprioception is important for everyday activities such as walking, running, and balancing.
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Proprioceptors are the afferent neurons that deliver to the brain about the movement of joints. So the correct option is Option C.
It is a sensory receptor that receives stimuli from within the body so thereby in turn responds to the position and movement of the body. The proprioceptive sense is said to be composed of information that comes from sensory neurons located in the inner ear and in the receptors of stretch that are located in the muscles and the ligaments.
The proprioceptors which present in ligaments have been found in fruit flies, nematode worms, African clawed frogs, and zebrafish. But,the corresponding human proprioceptor has not been discovered yet. The examples of proprioceptors include the golgi tendon organ and muscle spindles.
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scientists were looking at 2 genes in dogs that control coat color. they bred two dogs together, one with golden fur and one with black fur, their puppies showed a ratio of 12, 3, 1 for combinations of those genes, what phenomena is on display here?
The phenomena showed a ratio of 12, 3, 1 for combinations of two dogs (golden fur and black fur) as dominant epistasis.
The interаction between two dogs together, one with golden fur and one with black fur, color is recessive to no color аt one аllelic pаir. This recessive аllele must be expressed before the specific color аllele аt а second locus is expressed. Аt the first gene golden colored dog is dominаnt to the black colored dog, аnd the gene symbols аre G = golden аnd g = colored. Аt the second gene balck is dominаnt to golden, аnd the symbols used аre B = black, b = colored. If the dihybrid is selfed, three phenotypes аre produced in а 12:3:1 rаtio.
9 G_B_ Golden Dominant golden allele negates effect of G allele
3 G_bb Black Dominant black allele negates effect of G allele
3 ggB_ Golden Recessive color allele allows golden allele expression
1 ggbb Black Recessive color allele allows black allele expression
Becаuse the presence of the dominаnt G аllele mаsks the effects of either the B or g аllele, this type of interаction is cаlled dominаnt epistаsis.
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quuizlet in an in vitro polymerization reaction of f-actin from its g-actin subunits, there is a lag phase (rate-limiting stage). what happens during this lag phase? a: f-actin is nucleated b: f-actin reaches a steady state c: f-actin exchanges nucleotides d: f-actin hydrolyzes atp e: f-actin undergoes treadmilling
F- actin is nucleated. Nucleation is the rate-limiting step in the polymerization of actin filaments.
Bacteria prepare for cell division during the lag phase, which is a dynamic, structured, adaptive, and adaptable time period.
Actin nucleation process is typically thought to be responsible for the delay or lag phase at the beginning of the polymerization of actin by neutral salt. However, when Ca2+-containing actin is polymerized with MgCl2, a lag phase still exists when nucleation is avoided by using phalloidin-stabilized nuclei.
The creation of a tiny aggregate made up of three actin monomers is known as the nucleation phase of actin polymerization. The reversible addition of monomers to both ends of an actin filament allows it to grow, but only one end—the plus end—expands five to ten times as quickly as the minus end.
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why was the garden pea a good choice as an experimental organism in mendel's work? naturally crosbred
Pea plants are a wonderful option because they grow quickly and are simple to take care of. They also have a number of distinguishing features that can change.
He selected peas because they are simple to grow, have been used in comparable trials, and can be sown every year. Stamen and stigma, the male and female reproductive organs of the pea flower, are both present. Before the flowers open, self-pollination takes place, resulting in the production of offspring from a single plant.
The garden pea's blooms seal securely during self-pollination to minimize inadvertent or unintentional fertilizations that would have decreased the precision of Mendel's data, which is one of the reasons it was a great choice of model system for studying heredity.
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help me do this and ill give 10 points
which method is used to infer the timing of branching events by using the fossil record or geologic events to calculate dna divergence rates?
The method is used to infer the timing of branching events by using the fossil record or geologic events to calculate dna divergence rates is the molecular clock
Evolution is a change in the body structure of living things that takes place slowly over a very long time. Evolution results in changes in shape for the better or more complex as a result of adaptation to the environment.
Molecular clock is a procedure in molecular evolution that uses comparisons of fossil developments to infer the history of geological drift of species. The molecular clock hypothesis states that DNA and protein sequences evolve at a relatively constant rate over time and among different organisms. It is used in the time span of evolution.
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Phosphorus-32 has a half-life of 14. 0 days. A 40. 0g sample is being shipped. If it takes 27 days to arrive, how much p-32 remain upon delivery
There will be 0.25 g of phosphorus-32 left over. A radioactive isotope's nuclear half-life measures how long it takes for a sample to decay to half of its original value.
In your situation, after 14.0 days, you will still have half of the initial mass, regardless of how much phosphorus-32 you started with. You'll have half of what you did after the first 14 days, which is equal to one-fourth of the starting mass, after another 14 days. Only half of the original amount of phosphorus-32 is left after 14 days since the other half has decomposed. Half of the residual sum (or one-fourth of the initial sum) is still left after an additional 14 days.
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There will be 0.25 g of phosphorus-32 left over. A radioactive isotope's nuclear half-life measures how long it takes for a sample to decay to half of its original value.
In your situation, after 14.0 days, you will still have half of the initial mass, regardless of how much phosphorus-32 you started with. You'll have half of what you did after the first 14 days, which is equal to one-fourth of the starting mass, after another 14 days. Only half of the original amount of phosphorus-32 is left after 14 days since the other half has decomposed. Half of the residual sum (or one-fourth of the initial sum) is still left after an additional 14 days.
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identify which stage of cell signaling is directly altered by the cholera toxin: reception, transduction, or response? explain your answer. (3) b. will the other two stages still be normal in the cells exposed to the cholera toxin, or are they abnormal as well? explain. (3) c. explain why the movement of salts out of the intestinal cells and into the middle of the intestinal tract causes the movement of water to follow. (2)
ERK1/2 and p38 of the mitogen-activated protein kinase (MAPK) family are activated by the cholerae infection of intestinal epithelial cells.
A protein kinase that is particular to the amino acids serine and threonine is known as a mitogen-activated protein kinase (MAPK or MAP kinase; also known as a serine/threonine-specific protein kinase). MAPKs are important in controlling how cells react to a wide range of stimuli, including mitogens, osmotic stress, heat shock, and proinflammatory cytokines. They control a variety of cellular processes, including cell division, gene expression, differentiation, mitosis, and apoptosis. The only eukaryotes that have MAP kinases are a variety of unicellular eukaryotes as well as all mammals, fungi, and plants. The CMGC (CDK/MAPK/GSK3/CLK) kinase family includes MAPKs. Cyclin-dependent kinases are the MAPKs' closest relatives (CDKs)
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ERK1/2 and p38 of the mitogen-activated protein kinase (MAPK) family are activated by the cholera infection of intestinal epithelial cells.
A protein kinase that is particular to the amino acids serine and threonine is known as a mitogen-activated protein kinase (MAPK or MAP kinase; also known as a serine/threonine-specific protein kinase). MAPKs are important in controlling how cells react to a wide range of stimuli, including mitogens, osmotic stress, heat shock, and proinflammatory cytokines. They control a variety of cellular processes, including cell division, gene expression, differentiation, mitosis, and apoptosis. The only eukaryotes that have MAP kinases are a variety of unicellular eukaryotes as well as all mammals, fungi, and plants. The CMGC (CDK/MAPK/GSK3/CLK) kinase family includes MAPKs. Cyclin-dependent kinases are the MAPKs' closest relatives (CDKs)
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Please help me in question 9 and 11
What is diagnostics?
Answer:
I think it means like a test to figure out different stuff.
Explanation:
Answer:In my own word I think means like type of special test I hope this helps
Explanation:
Diagnostics-of, relating to, or used in diagnosis. a diagnostic tool. : using the methods of or yielding a diagnosis. diagnostic tests. : serving to distinguish or identify.diagnosis, the process of determining the nature of a disease or disorder and distinguishing it from other possible conditions. The term comes from the Greek gnosis, meaning knowledge. magnetic resonance imaging.
This is found in the cytoplasm of plant and animal cells. What is the main function of this organelle
Mitochondrion, membrane-bound organelle present in the cytoplasm of practically all eukaryotic cells (cells with clearly defined nuclei), whose principal job is to create vast amounts of energy in the form of adenosine triphosphate (ATP).
What is the purpose of the cytoplasm in plant and animal cells?The cytoplasm is in charge of retaining the cell's components and protecting them from harm. It stores the chemicals essential for cellular functions and is also responsible for the cell's structure.
It is the medium for chemical reactions. It serves as a platform for other organelles to work within the cell. All of the functions for cell development and growth.
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at what wind speed does a tropical storm turn into a hurricane?
A tropical storm turns into a hurricane when its maximum sustained wind speed reaches 74 miles per hour (119 km/h) or higher.
A tropical storm is a low-pressure weather system that develops over warm tropical waters and has maximum sustained winds of 39-73 miles per hour (63-118 km/h). These winds are caused by the rising warm air and the low-pressure center of the storm.
When the winds reach 74 miles per hour (119 km/h) or higher, the storm is then classified as a hurricane. The term "hurricane" is used in the Atlantic and northeastern Pacific, while the term "typhoon" is used in the western Pacific.
It's important to note that the wind speed is not the only criteria used to classify a tropical storm as a hurricane. The National Hurricane Center also takes into account other factors such as the storm's location, the minimum central pressure, and the organization of the storm's clouds.
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A tropical storm gets converted into a hurricane at a wind speed of 74 mph or more.
Tropical cyclones have a maximum speed of around 35 mph however hurricanes are defined as tropical cyclones exceeding the wind speed of 74 mph.
Hurricanes contain maximum surface sustained winds of speed 74 mph or above than this defined range.
When wind blows and it keeps on getting faster with every passing hour and finally at a point crosses the sustained limit of 74 mph or 119 kph that range of wind storm is defined generally as hurricanes.
Hence the classification is done not on the basis of storm size but on the basis of wind speed.
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genes that are likely inherited together due to their physical proximity
Linked genes are likely inherited together due to their physical proximity.
Genes that are sufficiently near to one another on a chromosome have a tendency to "stay together," and the alleles of those genes that are together on a chromosome are more likely to be passed down as a pair. Genetic linkage is the term for this phenomenon.
The likelihood of two genes inheriting together increased as two genes' distance from one another on a chromosome increased. On the other hand, genes that were further apart on the same chromosome were more likely to be split apart during recombination.
A group of DNA polymorphisms that are often inherited together is referred to as a haplotype along a single chromosome.
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Genes that are sufficiently close together on a chromosome will tend to "stick together," and the versions (alleles) of those genes that are together on a chromosome will tend to be inherited as a pair more often than not.
This phenomenon is called genetic linkage.
The more apart two genes were on a chromosome, the more likely it was that they would inherit together. On the other hand, recombination was more likely to result in the separation of genes that were spaced apart on the same chromosome. A haplotype on one chromosome is a collection of DNA variations that are typically inherited together.
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Describe the shape of the eastern mole’s hands
The eastern mole has hands that are adapted for digging and tunneling. They have short, broad, shovel-like forepaws with long, curved claws.
What is eastern mole?Eastern mole (Scalopus aquaticus) is a species of mole found in the eastern United States and parts of Canada. It is a small, burrowing mammal that lives in moist soils and feeds on insects, worms, and other small invertebrates. It is active both day and night and can be found in many different habitats, from grasslands to woodlands.
The front paws are larger than the hind feet, which are adapted for pushing dirt. The palms and digits are flattened and spread out for maximum contact with the ground. The claws on the front feet are long and curved, allowing them to dig and scoop the dirt away, while the claws on the hind feet are slightly curved and more flattened. The eastern mole’s hands are highly specialized for digging and tunneling, which is the mole's primary activity.
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Which combination of elements would most likely form a compound in which atoms share electrons?
Answer: Hydrogen , water , carbon-di-oxide,methane , oxygen , nitrogen dioxide etc.
Explanation: The bond between compound in which atoms share electrons is called covalent bond. They do so in order to attain the nearest noble gas configuration . These compounds are thus called covalent compounds .
What is the book "microbiology laboratory theory and application 4th edition" discussing?
"Microbiology Laboratory Theory and Application, 4th Edition" is likely a laboratory manual or textbook that is used in a course on microbiology.
The book likely includes information and exercises on the study of microorganisms, including bacteria, viruses, fungi, and protozoa. It may cover topics such as the basic biology and genetics of microorganisms, their role in the environment and human health, and techniques used to culture and study them in the laboratory. The text may also include chapters on laboratory safety, equipment, and procedures, as well as information on how to interpret laboratory results. The 4th edition likely includes updates and new information on recent advances in the field of Microbiology Laboratory .
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if glucose labeled at c-1 with 13c is the substrate for glycolysis in yeast cells, the labelled 13c soon appears in c-1 and c-6 of fructose-1,6-bisphosphate. explain how this isotopic scrambling occurs.
The accomplishment, or the most common way of accomplishing, harmonious dissemination of isotopes inside a predetermined format of molecules in synthetic animal types or gathering of substance species.
Isotopes are particles that have a similar nuclear number (and, consequently, by and large, a similar science) but unique mass. The distinction in mass turns out to be synthetically significant in specific occurrences. For instance, when a carbon-hydrogen bond is supplanted by a carbon-deuterium bond (deuterium being…
A dynamic isotope impact is an unthinking peculiarity wherein isotopically subbed particles respond at various rates. Understanding the rate distinctions gives data on the idea of the rate-deciding step.
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I SWEAR LAST ONEE
A phospholipid is composed of all the following, except.
O a charged phosphate group
O a glycerol head
a fatty acid tails
O a polysaccharide nucleus
carbon, hydrogen, oxygen, & phosphorous
*
Answer:
Polar
Nonpolar
Phospholipid Head
Phospholipid tail
Phospholipid
Phospholipid Bilayer
Answer:
You're right. It's the last one.
Explanation:
Phospholipids consist of a glycerol molecule, two fatty acids, and a phosphate group that is modified by an alcohol. The phosphate group is the negatively-charged polar head, which is hydrophilic.
Unlike most of the other muscles in our bodies, the masseter muscle in the jaw, as illustrated in the figure, is attached relatively far from the joint, enabling very large forces to be exerted by the back teeth. This is shown in the figure below, where a person is biting down on a bullet placed between the back teeth. (F_M = 225 N and r_R = 4.1 cm.) Using the information in the figure, calculate the magnitude of the force exerted by the teeth on the bullet. Calculate magnitude of the force on the joint.
The torque represents the force on the joint, the magnitude of the force on the joint is 922.5 Ncm.
The magnitude of the force exerted by the teeth on the bullet is given as F_M = 225 N.
To calculate the magnitude of the force on the joint, we need to determine the torque produced by the force F_M at the radial distance r_R = 4.1 cm from the joint.
Torque = Force x Radius
= F_M x r_R
= 225 N x 4.1 cm
= 922.5 Ncm
Since the torque represents the force on the joint, the magnitude of the force on the joint is 922.5 Ncm.
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carried by ticks and transmitted through bite of an infected tick
What type of parasite is often carried by ticks?
The central nervous system consists of the brain and spinal cord.The brain and spinal cord are the two components of the central nervous system.
The peripheral nervous system is composed of nerves that emerge from the spinal cord and cover the entire body. The majority of your senses are fed information by PNS into your brain. You can move your muscles thanks to the signals it transmits. The brain uses signals from your PNS to command essential, automatic functions like breathing and pulse. An upper motor neuron transmits motor information from a region of the brain down the spinal cord. From the brain to the brainstem, upper motor neurons can also travel.
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Which immune cells are activated first when suspicious cells are identified in the blood stream?
a. T cells
b. Kinins
c. Phagocytes
d. B cells
Option c is Correct. When suspicious cells are found in the blood stream, phagocyte immune cells are the first to become active.
The innate immune system's neutrophils are regarded as the initial defense. The blood is carried by neutrophils and macrophages, which remain in tissues and keep an eye out for any concerns. Both cells have the ability to "eat" bacteria and, in the event of a problem, to interact with other immune cells.
Due to IgM's ability to be expressed without isotype switching, it is always the first antibody to be produced in a humoral immune response. Neutrophils play a crucial role in the initial response to injury because they act as the body's initial line of defense against microbes within 10 minutes of the injury. These early IgM antibodies are created before somatic hypermutation of B cells, which is why they tend.
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Phagocytes are activated first when suspicious cells are identified in the bloodstream.
when the body senses foreign substances (called antigens), the immune machine works to recognize the antigens and remove them.
B lymphocytes are prompted to make antibodies (also referred to as immunoglobulins). these proteins lock onto specific antigens. After they may be made, antibodies normally stay in our our bodies in case we ought to combat the same germ again. this is why someone who receives unwell with a disorder, like chickenpox, usually won't get ill from it again.
although antibodies can recognize an antigen and lock onto it, they can't break it with out assist. that's the process of the T cells. They spoil antigens tagged by way of antibodies or cells which might be inflamed or one way or the other changed. (a few T cells are absolutely known as "killer cells.") T cells also help signal different cells (like phagocytes) to do their jobs.
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The triple helix structure of collagen protein is possible largely due to
a. glycine and its small side chain b. an exact palring of pyrimidlnes and purlnes c. the covalent disulfide bridges between cystelnes d. the absence of carboxyl groups
The triple helix structure of collagen protein is possible largely due toa. glycine and its small side chain.
due to the excessive abundance of glycine and proline contents, collagen fails to form a normal α-helix and β-sheet structure. three left-exceeded helical strands twist to form a right-surpassed triple helix. A collagen triple helix has 3.three residues in keeping with turn.
In collagen, glycine is needed at each 1/3 role, due to the fact the meeting of the triple helix places this accretion on the interior (axis) of the helix, wherein there's no space for a larger facet institution than glycine's unmarried hydrogen atom.
Collagen consists of three chains. The chains are wound collectively to form a triple helix. considering the fact that glycine is the smallest of all the amino acids, it permits the chain to form a good configuration, and and it could withstand
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l
Option a is Correct. A. glycine and its short side chain are significantly responsible for the collagen protein's triple helix shape.
Collagen is unable to form a typical -helix and -sheet structure because of the overabundance of glycine and proline. A right-surpassed triple helix is created by the twisting of three left-exceeded helical strands. A triple helix of collagen contains 3.three residues per turn.
Since the triple helix's intersection places each 1/3 function on the inner (axis) of the helix, where there is no room for a greater facet size than glycine's single hydrogen atom, glycine is required at each position in collagen.
The three chains that make up collagen. A triple helix is created when all the chains are twisted together. Given that glycine is the smallest amino acid, it allows the chain to establish a good shape and can tolerate a lot of stress.
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can you please order them in order?
But this is not very courteous. You can use an introduction statement in place of an imperative. Here are a few typical alternatives to rephrasing an order.
Is please a request or an order?The English language uses the word "please" to denote respect and civility while making a request. The phrase "if you please" or "if it pleases you" was originally shortened, but due to the relationship between the people who use it and the intonation utilised, the phrase has developed significant nuance.Please is typically included after requests that begin with could, can, or would, but it is also acceptable to add it at the beginning or middle.When they precede an infinitive, both will typically have the same meaning in practice—they will open the door for the verb's stated action. However, the phrase "in order to" can emphasise how essential the subsequent action is.To learn more about typical refer to:
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he pond waters in a location in florida had an unusual taste and smell. investigations revealed that storm water runoffs had carried huge amounts of animal wastes into the pond waters. what are people in the location most likely to do to prevent the water pollution?
As you can find in the inquiry over, the surprising taste and smell of the waters of the tidal pond in an area in Florida, was the consequence of creature squandering brought to the tidal pond by spillover.
Surface spillover is the name given to the progression of water that can run on the outer layer of soil that is as of now splashed, in light of the fact that the water has not penetrated that dirt, causing an overflow.
Vegetation planting is ideal to keep spillover from happening. The presence of trees and bushes gives obstruction the progression of water and even permits the dirt to penetrate water all the more productively, forestalling waterlogging. In light of this, we can say that establishing trees and bushes would keep creature squander from coming into contact with the lake water, as well as forestalling soil disintegration.
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As you can see from the last investigation, spillage transported animal waste to a tidal pond in Florida, which is why the water there had an unusual flavor and smell.
Surface spillover is the term used to describe the progression of water that can flow on the top layer of already splattered soil because the water has not yet soaked through that dirt, leading to an overflow.
Planting vegetation is the best way to prevent spillage. The presence of trees and bushes prevents waterlogging by blocking the flow of water and even allowing dirt to more effectively permeate the water waterlogging. In light of this, we may conclude that planting trees and bushes would prevent soil erosion as well as the contact of animal waste with lake water.
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31. when the homologous pairs separate during anaphase i do the homologous chromosomes still contain the same type of genes? explain your answer fully.
This separation means that each of the daughter cells that results from meiosis I will have half the number of chromosomes of the original parent cell after interphase.
Also, the sister chromatids in each chromosome still remain connected. Chromosomes have been known to travel to the cell's opposing poles during anaphase 1.
This happens from the microtubule network imploding, which decreases the microtubule strands and allows the chromosomes to consolidate at the magnetic sides.
Anaphase A is the first component of anaphase 1, that occurs when the microtubule - connected filaments constrict and shorten. As a result, kinetochores travel in any of 2 ways: up or down.
The chromosomes move in the opposite direction from the kinetochores despite face the pole through this whole process. The third stage of meiosis in one is anaphase 1, whereas the third phase in another is anaphase 2.
With the assistance of centrosomes linked to the nucleus by cytoskeleton, a single pair of paired pairs, which forms a bivalent, is pushed toward the opposite poles of the cell throughout anaphase 1.
The centromere does not split in anaphase 1. It remains unchanged as a whole instead. This is so that the complete chromosome would travel to the polar poles, when in anaphase 2, both homologous chromosomes' centromeres split.
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Select the correct answer.
Which term defines a well-supported, explanation of an occurrence of a natural phenomenon?
OA.
OB.
O C. observation
O D. theory
hypothesis
bias
Reset
Next
The term that defines a well-supported, explanation of an occurrence of a natural phenomenon is theory. Hence Option (B) is correct.
Why is scientific theory significant?A scientific theory is a well-supported explanation of a feature of the natural world that is based on a body of facts that have been repeatedly verified via observation and testing. Through the use of the scientific method, theories in science are developed. A hypothesis is developed by observation and study, which is followed by testing.
In the event that the theory is not refuted, it will be examined and tested repeatedly. By placing observations and experiments in a framework, scientific theories serve as organizing principles and provide objectivity. Even studies conducted under one "wrong" hypothesis will eventually lead to the theory's extinction and contribute to knowledge advancement.
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The correct question is:
Select the correct answer.
Which term defines a well-supported, explanation of an occurrence of a natural phenomenon?
A. observation
B. theory
C. hypothesis
D. bias
Answer:
Hypothesis.
Explanation:
Which best describes the outcome of DNA replication?
A. The new DNA molecule is identical to the original DNA.
B. The new DNA molecule is synthesized from amino acids.
C. The new DNA molecule has a different number of codons.
D. The new DNA molecule is single-stranded.
Answer: A- The new DNA molecule is identical to the original DNA.
Hope this helps :)
Explanation:
1. As we increase our latitude heading north we can expect the vegetation to
A. Increase in height and density, with fewer cold weather adaptation.
B. Decrease in height and density, with more cold weather adaptation
C. Decrease in heigh and density, with fewer cold weather adaptation
2. Factors influencing where plants can grow include all of the following except :
A. Temperature
B. Animal species
C. Latitude
As we increase our latitude heading north we can expect the vegetation to - Decrease in height and density, with more cold ecosystem adaptation.
Factors influencing where plants can grow include all of the following except : Animal species.
What is Vegetation?The plants that grow in a certain area or region are referred to as vegetation.It is a collective name for all the many kinds of trees, shrubs, grasses, and other plants that make up an area's flora.It is used to describe plant life in a certain environment.The ecosystem's most important component, vegetation offers vital ecosystem services like oxygen production, carbon sequestration, and habitat for species.The kind and distribution of vegetation in a location can be influenced by the climate, soil type, and other environmental factors, as well as by human activity.Biodiversity is a term used to describe the variety of plant and animal species found in a given area, particularly the variety of flora.To learn more about vegetation from the given link :-
https://brainly.com/question/29538139
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Can someone help me with these 2 questions?
Answer:
It should be the first two on the first question and Both A and B for the second question
Explanation: