Answer:
Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.
work to answer the following questions about the abo blood group system and blood type compatibility. can a person with blood type a successfully receive a transfusion from a person who has type o? why or why not?
A person with blood type A can successfully receive a transfusion from a person who has type O because a person having blood group O acts as universal blood donor .
What Is A universal blood donor ?The blood group type needed for urgent transfusions, The blood type that has the least chance of giving most recipients major side effects is O-negative blood. The universal blood donor type is a term that has been used to describe it in some instances. Antigens, which are proteins found on red blood cells, provide the basis for blood group kinds. Red blood cells are covered in both significant and minor antigens.
The (rhesus) Rh factor is used to categorize blood as well. Rh positivity results from having the Rh factor in your blood. You are Rh negative if your blood lacks the Rh factor. A perfect match in terms of type and Rh factor is required for blood transfusions. Even so, tiny amounts of the donor's and recipient's blood are combined for inspection.
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if a section of dna has 27% thymine, how much cytosine will it have?
Answer:
23%
Explanation:
Since the thymine percent is 27%, the adenine percent is also 27%. This means that cytosine and guanine both have a percent of 23% in the DNA.
as the enzyme trypsin cuts peptide chains mainly at the carboxyl side of the amino acids lysine or arginine are these side chains consistent with their role in specificity?
The aromatic amino acids include phenylalanine (which has a phenyl group) and tyrosine, according to the list of amino acids (with a phenolic group).
Chymotrypsin's pocket has a preference for aromatic amino acids or amino acids with large hydrophobic chain .There are no amino acids among the remainder with large hydrophobic side chains. Although it possesses a 3-carbon side chain, the guanidino group in arginine makes it hydrophilic rather than a bulky hydrophobic R-group. Although alanine is hydrophobic, it is not bulky since its R-group solely consists of the methyl (-CH3) group. Neither hydrophobic nor aromatic, aspartate is neither. Finally, glycine is really straightforward; it just possesses a -H R-group. Proteases that behave like trypsin and break peptide bonds after positively charged amino acids (Lysine or Argenine)
Protease that is similar to elastase and has a significantly smaller S1 cleft than proteases that are similar to trypsin or chymotrypsin.
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Which of these neurons carry impulses from the CNS to the effectors?A Sensory neuronsB Association neuronsC Connection neuronsD Motor neurons
The neurons that carry impulses from the CNS to the effectors are D. Motor neurons.
Motor neurons are a type of efferent neuron that transmit signals from the central nervous system (CNS) to the muscles, glands, and other effectors in the body. They play a crucial role in controlling voluntary and involuntary movements, as well as regulating the activity of various organ systems. Motor neurons are activated by the output of interneurons or other motor neurons, and their axons extend out of the CNS to synapse with the effector cells (muscles or glands).
Sensory neurons, on the other hand, are a type of afferent neuron that carry signals from sensory receptors to the CNS. They play a key role in detecting changes in the environment and transmitting sensory information to the brain and spinal cord.
Association neurons, also known as interneurons, are found only in the CNS and are responsible for relaying and processing information between sensory neurons and motor neurons.
Connection neurons is not a common term in neuroscience, it can refer to the same as Association neurons.
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what statement best summarizes the results? what statement best summarizes the results? this data does not help us understand effects of gene flow on fitness. the gene flow between hatchery-reared and wild populations is neither helping nor hindering the fitness of the wild population. the gene flow between hatchery-reared and wild populations is leading to a decline in fitness of wild populations. the gene flow between hatchery-reared and wild populations is increasing the fitness of the wild populations.
The statement that best summarizes the results is "The gene flow between hatchery-reared and wild populations is neither helping nor hindering the fitness of the wild population."
This statement suggests that the data does not show a significant positive or negative impact of gene flow on the fitness of the wild population. It may also suggest that more research is needed to fully understand the effects of gene flow on the fitness of wild populations.
Gene flow refers to the movement of genes from one population to another, and can occur through various mechanisms such as migration, hybridization, or the dispersal of genetic material through seed or pollen.
When wild populations interbreed with hatchery-reared individuals, the genetic makeup of the wild population may change as a result of the influx of new genes from the hatchery-reared individuals. This can potentially have both positive and negative effects on the fitness of the wild population.
Positive effects may include the introduction of beneficial alleles (versions of a gene) that increase the population's overall fitness, such as disease resistance or improved reproductive success. On the other hand, negative effects may include the introduction of deleterious alleles that decrease the population's overall fitness, such as reduced survival or lower fertility.
The statement "The gene flow between hatchery-reared and wild populations is neither helping nor hindering the fitness of the wild population" suggests that the data collected does not indicate a significant positive or negative impact of gene flow on the fitness of the wild population. This could be due to a variety of reasons such as the small sample size, lack of data on specific genetic markers, or the complexity of measuring fitness.
It is important to note that this statement does not rule out the
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How does the body regulate the amount of carbon dioxide in the blood?
O it instructs the liver to absorb or release carbon dioxide by sending signals through the nervous system
O it controls the rate of breathing by sending signals through the nervous system
O it instructs the liver to absorb or release carbon dioxide by sending hormones through the blood
O it controls the rate of breathing by sending hormones through the blood
The blood's pH value drops as more carbon dioxide up in it .it controls the rate of breathing by sending hormones through the bloodthe brain controls how much carbon dioxide is exhaled (ventilation).
The correct answer is D
What does ventilation provide as a means of?The mechanical arrangement in a structure that introduces "fresh" external air and exhausts "contaminated" internal air is known as ventilation. Ventilation is utilized in the workplace to limit exposure with airborne contaminants.
Why is a patient ventilated?When you are unable to breathe on your own, ventilator is a sort of therapy that assists you or takes over for you. During operation or if your lung aren't functioning properly, you can be on a ventilator. oxygen is delivered, mechanical ventilation maintains your airways open, and
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Cell division in bacterial and eukaryotic cells produces genetically _____ cells.
Answer:
Cell division in bacterial and eukaryotic cells produces: Genetically identical cells.
_______
Answer: identical
Explanation:
Rosalind Franklin is famous for which contribution to the study of DNA?
A. creation of an accurate model of DNA structure
B. creation of an X-ray diffraction image of DNA structure
C. identification of a pattern in ratios of DNA bases
D. identification of DNA in bandages that contained pus
why is revaccination required every time a new seasonal influenza strain arises? the immune system is only capable of producing antibodies against seasonal influenza strains for a year after vaccination. the antibodies in a vaccine only kill the virus currently infecting a host and must be readministered with each new infection. newly evolved influenza strains may have mutations that help antibodies bind more effectively to the surface proteins on the virus. the immunity acquired for one seasonal influenza strain does not protect against new strains with different surface proteins.
Because immunity wanes after a year and because the viruses used to make the vaccine are changed practically each year, influenza vaccination is administered each year.
Influenza viruses are members of the Orthomyxoviridae family and have a single-stranded segmented RNA genome. Based on their core proteins, influenza viruses are divided into kinds A, B, and C. Type A viruses are further split into groups based on whether their envelope glycoproteins have neuraminidase (NA) or haemagglutinin (HA) activity. The influenza virus experiences significant rates of mutation and frequent genetic reassortment (combination and rearrangement of genetic material), characteristics of many RNA genome viruses that cause variation in HA and NA antigens. Antigenic drift, which regularly occurs in influenza A strains due to small protein structural changes, allows the virus to repeatedly produce influenza outbreaks by eluding immunological detection. Reassortment from several influenza A strains results in significant alterations in the influenza type A HA antigen, or "antigenic shift.
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According to Chargaff's rule, base pairing in DNA should resemble which of the following?
A. A = T; C = G
B. A = C; T = G
C. A = G; T = U
D. A = U; C = G
Answer: A
Explanation:
A is paired with T, C is paired with G.
Part B: Simulate Deforestation
Next, you’ll build a simulation showing the changes in a portion of the forest over time. This sample shows a forest region.
Forest Region
A 3 by 4 grid of rectangle blocks. 2 are black and 10 are gray.
Gray: untouched region (150 trees per block)
Black: deforested region (no surviving trees)
Use your word-processing program’s table maker to create three grids showing the rate of deforestation of a forest in three different years—year 1, year 5, and year 10. Choose colors to represent the deforested and untouched regions. Provide a key that shows the number of trees represented by each block, as well as the colors that represent the forested and deforested areas.
Here are the specifications for your forest:
The forest is represented by a 5 x 5 grid.
Year 1: There are a total of 4,500 trees in your forest and no deforestation. Figure out how many trees represent each block.
Year 5: 1,080 trees were deforested.
Year 10: An additional 1,980 trees were deforested.
After you’ve completed your grids, use the Insert Image button to insert screen shots of the grids in the answer space.
To facilitate human operations, deforestation is described as the extensive removal of trees from forests (or other places).
How is the deforestation test performed?In the modern world, there are numerous techniques to quantify deforestation. For instance, researchers can utilize satellite imaging and/or LiDAR to identify shifts in global forest growth and density.Reforestation is the process of reestablishing or replanting forests after they have been destroyed by fire or logging.To facilitate human operations, deforestation is described as the extensive removal of trees from forests (or other places). Since it may cause soil erosion, harm to natural ecosystems, disruptions to the water cycle, and loss of biodiversity, it is a severe environmental concern.To facilitate human operations, deforestation is described as the extensive removal of trees from forests (or other places).To learn more about deforestation refer to:
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what is the process of making rna from a dna template?
The process of making RNA from a DNA template is called transcription.
The process of creating RNA from DNA is known as transcription, and it takes place in the nucleus. Transcription is the process of copying (transcription) DNA to mRNA, which carries the information needed for protein synthesis. Transcription is divided into two stages. First, pre-messenger RNA is synthesised with the help of RNA polymerase enzymes.
Transcription RNA is created from DNA by an enzyme called RNA polymerase during the transcription process. Rather than being identical copies of the template, the new RNA sequences are complementary to it. Ribosomes are structures that translate RNA into proteins.
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The process of making RNA from a DNA template is called transcription.
During transcription, the enzyme RNA polymerase binds to the DNA at the promoter region and separates the two strands of the DNA. It then works along the template strand, adding complementary ribonucleotides (A, U, G, and C) to form a single-stranded RNA molecule.
The RNA polymerase continues to add nucleotides until it reaches a termination signal, at which point it releases the newly synthesized RNA molecule.
The RNA molecule is then processed, which typically involves the removal of certain sections and the addition of a poly-A tail to the 3' end of the molecule. The resulting molecule is the mature RNA, which is ready to be translated into a protein.
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the most common type of personal protective equipment available for first aiders to protect against blood borne pathogens is:
Gloves are always required, but gowns, face shields, eye protection, and pocket masks may also be required. Latex gloves and gowns-gloves and gowns protect your skin and hands from blood contact.
Personal protective equipment, such as gloves, gowns, masks, eye protection (e.g., goggles), and face shields, are both required by the Bloodborne Pathogens standard (29 CFR 1910.1030) and the CDC's recommended standard precautions to protect employees from infectious diseases.
Gloves, gowns, laboratory coats, face shields or masks, eye protection, pocket masks, and other protective gear are examples of personal protective equipment. The PPE used must be suitable for the task.
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how long does it take to see results from weight lifting
Building muscle takes time. To notice a change, it may take three to four weeks.
After 12 weeks, you'll start to see some genuine improvements, but Haroldsdotti says it "all depends on your goals and what kind of strength training you are doing."
How frequently should I work out to get results?
At least three days a week should be spent lifting weights. According to the research, two days of training each week are the absolute minimum required to enhance muscle growth. Depending on your current level of fitness, you can adjust the way you set up your workouts and the number of days you spend on strength training.
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what factor determines how a post-synaptic/effector cell will respond to the presence of a particular pre-synaptic neurotransmitter
When neurotransmitter molecules bind to the receptors, a synaptic impact is produced. The impact is proportional to the neurotransmitter's average concentration.
The following are some of the elements that affect how well neurotransmitters attach to their receptors: the neurotransmitter concentration. the relationship between the receptor and the neurotransmitter. The type of channel that is linked to the receptor and the concentration of permeant ions both within and outside the cell determine whether a postsynaptic response is an EPSP or an IPSP.
Depolarization, or a reduction in negative charge, forms an excitatory PSP because it can stimulate the production of a nerve impulse if the neuron achieves the crucial threshold potential (action potential).
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The factor that determines how the post-synaptic/effector cell responds to the presence of a particular pre-synaptic neurotransmitter is: the net change in post-synaptic membrane voltage.
A neurotransmitter is a chemical substance that acts in between two nerve cells to transmit the electrical signals in chemical forms from one nerve cell to another. Neurotransmitter can be excitatory or inhibitory. The example of neurotransmitters are: acetylcholine, dopamine, GABA, glutamate, etc.
Membrane voltage, also called membrane potential is defines as the difference in the charge between the inside and the outside of the membrane. This difference in charge is due to the different concentrations of ions on both sides.
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Which is the mRNA molecule that would be transcribed from this DNA template: TGG-CAA-GTA-CGT
(A) UCCGUUCUUGCU
(B) ACCGUUCAUGCA
(C) ACCGTTCATGCA
(D) UGGCAAGUACGU
Answer:
ACC-GUU-CAU-GCA
do you think you can make a difference with your family or society? how?
Answer:
this is a opinion based question
Answer:
yes you can
Explanation:
you can lent a hand around your society and help those in need
which term names the total collection of dna in an organism? responses protein sequence protein sequence genetic modification genetic modification genome genome genotype
The entire nuclear DNA collection of an organism is referred to as its genome.
Humans and other sophisticated organisms also have a small quantity of DNA in cell structures called mitochondria, in addition to the DNA found in the nucleus.
The total collection of DNA instructions present in a cell makes up the genome. The human genome is made up of 23 pairs of chromosomes that are found in the cell's nucleus and one tiny chromosome that is found in the mitochondria. Everything a person needs to grow and operate is encoded in their genome.
All of an organism's genetic material is contained in its genome. Genes and other components that regulate the activity of those genes are contained in its DNA (or RNA in the case of some viruses).
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7. compare a thin unmyelinated and thick myelinated cylinder of axon in terms of their membrane resistance, capacitance, and internal (axial resistance). what are the implications of each property on ap speed
By reducing the membrane capacitance, the propagation velocity can also be increased. You can do this by coating. Unmyelinated gaps around 2 m long are called nodular spaces (nodes of Ranvier).
We emphasise that voltage-gated sodium channels run the whole length of the membrane in unmyelinated axons. In contrast, voltage-gated sodium channels are only present in the nodal gaps of myelinated axons. Unmyelinated gaps around 2 m long are called nodular spaces (nodes of Ranvier). Axons with a larger diameter have a higher speed, allowing them to transmit impulses more quickly. This is due to the ion flow encountering less resistance. Nerve impulses in myelinated neurons leap over the myelin sheath instead of pass through it, shortening the path to the axon terminal, allowing them to transmit impulses more quickly than unmyelinated neurons. The myelin sheath has a high percentage of fatty molecules, which causes this to happen.
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The propagation velocity can also be boosted by decreasing the membrane capacitance. Coating can help you with this. Nodular spaces refer to 2 m-long unmyelinated gaps (nodes of Ranvier).
We emphasize that in unmyelinated axons, voltage-gated sodium channels extend the entire length of the membrane. Voltage-gated sodium channels, on the other hand, are only found in the nodal gaps of myelinated axons. Nodular spaces refer to 2 m-long unmyelinated gaps (nodes of Ranvier).
Larger axons move faster and can transfer impulses more quickly because of this. This is because there is less resistance to the ion flow. The journey to the axon terminal is shortened in myelinated neurons because nerve impulses jump over the myelin sheath rather than through it.
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what is the function of sunlight in photosynthesis
The function of sunlight in photosynthesis is to excite the electrons found in the chlorophyll to operate a series of reducing-oxidizing (redox) reactions in the photosystems and other associated proteins in the chlorophyll.
The end product of which is to produce adenosine triphosphate (ATP) which is considered as a currency for energy.
Photosynthesis is a process by which plants and other organisms produce food from sunlight. The food produced by photosynthetic organisms is in the form of carbohydrate molecules, which is synthesized by using carbon dioxide and water, releasing oxygen as a waste product. In plants, conversion of sunlight, carbon dioxide gas, and water into glucose is done inside the chloroplasts, the plant organelles that contain chlorophyll which drives the reaction for photosynthesis.
Photosynthesis occurs in two stages: light-dependent reactions, in which sunlight is captured to produce energy, and light-independent reactions ,where the energy produced is used to drive the conversion of carbon dioxide and water into carbohydrates.
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genetic engineering is possible because the genetic code of all organisms is based on the same _______________. however, all attempts to genetically engineer new organisms are not successful.
Genetic engineering is possible because the genetic code of all organisms is based on the same ancestor.
In order to achieve a desired characteristic, genetic engineering may include introducing a gene from one species to an organism from a different species. Genetic engineering has been used in science and business to produce cancer treatments, brewing yeasts, and genetically altered plants, and animals, among other things.
DNA is inserted into an organism's genome as part of GM technology. New DNA is introduced into plant cells to create a GM plant. The cells are typically cultured in tissue culture after which they transform into plants. The modified DNA will be passed along to the seeds that these plants generate.
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PLEASE HELP ASAP 30 points and will give brainlist !!!!!!!!!!!!!!
Text Version
Using the diagram above, answer the following questions:
True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false. False because it goes to chemical to thermal.
True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false. True because it goes from the sun which is thermal to the plant and that photosynthesis which is chemical.
Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?
Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected.
Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.
Answer:
the arrow that points into the ground represents conservation of mass energy bc that is where it is stored.
how can you include the five myplate food groups into your daily diet and describe each one?
The five MyPlate food groups are fruits, vegetables, grains, proteins, and dairy.
Including the five MyPlate food groups into my daily diet is very important for a balanced nutrition. Fruits provide a great source of vitamins and minerals, and can be eaten as a snack, or added to a meal for extra flavor.
Vegetables provide an essential source of many vitamins, minerals and antioxidants. It is recommended that you eat at least five servings of veggies each day. Whole grains provide essential dietary fiber, vitamins and minerals, and can be included in the form of bread, cereal, rice, and pasta.
Protein foods are important for growth and repair and can be found in meat, poultry, fish, eggs, nuts, and legumes. Finally, dairy foods provide a great source of calcium and vitamin D, which are essential for bone health. By including all five MyPlate food groups in my daily diet, I can ensure that I am getting all the essential nutrients needed for good health.
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Some scientist hypothesize that genetically engineering salmon to increase their size and the rate of growth can help meet human demands for protein. Which of these questions addresses the biggest concern scientist should research before releasing the genetically engineered salmon to the wild?
Some scientists hypothesize that genetically engineering salmon to increase their size and the rate of growth can help meet human demands for protein.
The conundrum of eating Genetically modified fish is that their primary moral arguments are condensed. There have been a number of questions raised against introduction of GM crops, including potential harm to human health, the environment, traditional farming practices and the "unnaturalness" of the technology.
Genetic engineering and selective breeding appears to incorporate the animals manipulation for human interests, such that they were nothing more than human property, rather than seeing them as having value in and of themselves, and this looks to be an apparent violation of animal rights.
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which method of reproduction should an organism that can reproduce both sexually and asexually use if their environment changes and it becomes more difficult to survive? why?
"Asexually reproduction should be the best method an organism that can reproduce both sexually and asexually use if their environment changes and it becomes more difficult to survive.
What is reproduction?If an organism that can reproduce both sexually and asexually experiences a change in its environment that makes survival more difficult, it should likely use asexual reproduction.
Asexual reproduction allows an organism to produce genetically identical offspring quickly and efficiently, which can increase the chances of survival in a challenging environment. Additionally, asexually reproducing organisms can take advantage of any beneficial mutations that may arise in their offspring, which can also increase their chances of survival.
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List cell structures too small to observe using the compound light microscope.
The structure that are smaller the wavelength of visible light cannot be seen by compound microscope.
These small structures that doesn't show up in microscope include, for instance:
Ribosomes are tiny, spherical organelles that are in charge of producing proteins.Mitochondria: These are the organelles in charge of supplying the cell with energy.Endoplasmic reticulum: This system of stacked, flattened sacs is important in the creation of proteins and lipids.Proteins and lipids are sorted, modified, and transported under the control of the Golgi apparatus.Microfilaments: These tiny cytoskeletal filaments aid in giving cells their mechanical strength.Microvilli: These are tiny, finger-like protrusions that enhance the surface area of cells and are involved in absorbing and secreting substances. TCilia: These two tiny, hair-like organelles are used for movement and are called cilia and flagella.To know more about microscope, click here,
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Cell structures too small to observe using the compound light microscope include ribosomes, lysosomes, and mitochondria.
Ribosomes are small organelles, approximately 20 nanometers in diameter, which are responsible for the production of proteins.
Lysosomes are membrane-bound organelles that contain hydrolytic enzymes to break down cellular materials, and they are typically around 0.5-1.0 micrometers in diameter.
Mitochondria are organelles responsible for energy production and are typically between 0.5 and 1.0 micrometers in size, but can be up to 10 micrometers in size.
All of these cell structures are too small to be seen with a compound light microscope, which is only capable of magnifying objects up to approximately 1,000x, which is not enough to observe these small organelles.
To observe these cell structures, a higher-powered microscope is needed, such as an electron microscope, which is capable of magnifying objects to a much greater degree.
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Which option identifies how the farmer can best deal with the following scenario?
A farmer is presented with new neighbors from a recent development making accusations that the farm
presents an agricultural nuisance through its use of recommended high-yield farming techniques promoted by
the state agricultural experiment station and supported by the State Department of Agriculture.
O He can shift from the recommended techniques to a good stewardship philosophy to improve standards of farming.
He can point out the encroachment of residential development and argue for funds from the state to purchase new land and
move the farm.
He can shift from the IPM system in use to a pesticide-centered approach in an attempt to kill all pests associated with the
farm.
He can point out the use of GAAMP methods promoted by the state and argue that the farm's practices are covered by
Right to Farm.
In this case, the farmer's ideal course of action is: To raise farming standards, he can switch from the advised methods to a good stewardship philosophy.
What exactly is the stewardship ethos?
The ethical idea and practice of managing and caring for natural resources, such as land, water, and wildlife, is known as stewardship philosophy. In order to preserve or enhance the health and productivity of resources for future generations, a good stewardship philosophy emphasizes the significance of using them in a sustainable and responsible manner.
With this choice, the farmer can allay the worries of the new neighbors by displaying a dedication to ethical and sustainable farming methods.
If a farmer adopts a good stewardship philosophy, they can demonstrate that they are making efforts to reduce any
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1. How will photosynthesis affect oxygen levels?
Answer:
Raises O₂ levels
Explanation:
Photosynthesis is a chemical reaction that occurs within plants in the chloroplasts, using CO₂ and water to produce O₂ and glucose:
6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂
in the central dogma of biology, what part is transcription?
Answer:
Conversion of DNA into mRNA
Explanation:
Central Dogma was given by Fancis Crick .According to which information flows from DNA to mRNA to proteins.DNA to mRNA by process called transcription.mRNA to proteins by process called translation.Hope this helps!
a gene is a segment of dna on a chromosome. how are genes related to the proteins made by a cell?
The different genes in the cell's DNA determine which proteins are made by the cell.