Answer:
weights
Explanation:
Why can hurricanes be difficult to predict
1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
J. Mutation
K. Independent assortment
L. Mitosis
M. Fertilisation
2. Which statement best describes the process of endocytosis?
J. A vesicle within a cell fuses with the plasma membrane and releases its contents to the outside
K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
L. Investment in one cytosis reduces the ability of the parent to assist another cytosis
M. One region of an embryo directs the development of neighbouring region of an embryo through movement of cells
3. In eukaryotic cells the conversion of ADP and phosphate into ATP occurs (KA1)
J. only in the mitochondria, and requires energy.
K. only in the cytoplasm, and releases energy.
L. in both the mitochondria and the cytoplasm, and requires energy.
M. in both the mitochondria and the cytoplasm, and releases energy.
4. One consequence of having small regulated steps in an energy pathway is (KA1)
J. an increase in the activation energy for the pathway.
K. a decrease in the amount of heat lost from the pathway.
L. a decrease in the amount of ATP released from the pathway.
M. an increase in the total energy released from the pathway.
5. Adult stem cells in bone marrow can differentiate into a variety of cell types e.g brain, skin, lungs, heart, liver and muscle.
Stem cells that are transplanted from a healthy donor into a patient (recipient) will divide and differentiate into cells of like form and function to the surrounding cells.
The adult stem cells from the bone marrow of the donor would be genetically identical to the cells of the
J. recipient, and divide by mitosis.
K. donor, and divide by mitosis.
L. recipient, and divide by meiosis.
M. donor, and divide by meiosis.
Answer:
1. Mitosis
2. K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
3. L. in both the mitochondria and the cytoplasm, and requires energy.
4. J. an increase in the activation energy for the pathway.
5. K. donor, and divide by mitosis.
Explanation:
The sources of genetic variation in a population with sexual reproduction are 1-mutation, which can be defined as genetic changes in the genome of an organism that create new alleles in the population, 2-independent assortment, where pairs of homologous chromosomes are randomly separated, during meiosis, 3-fertilization, where two gametes held together to form the zygote cell (thereby creating new genetic combinations), and 4-recombination or crossing over (i.e., the exchange of genetic material between non-sister chromatids during meiosis). Endocytosis is a cellular process by which substances enter into the cell by invagination of the cell membrane (this term is contrary to exocytosis). In eukaryotic cells, mitochondria are organelles whose membranes produce ATP from ADP and Pi by aerobic respiration (i.e., by the Krebs Cycle and electron transport chain), while glycolysis occurs in the cytoplasm. This process requires the addition of energy (chemical energy in the form of organic compounds). An energy pathway that has many small regulated steps is expected to produce intermediate products and increase its activation energy. Finally, stem cells that derive from a donor and are genetically identical it is expected that divide by mitosis.
The table below shows the average distances of four planets from the sun.
Considering Kepler's Laws, which planet has the fastest average orbital speed?
A. Venus
B. Neptune
C. Saturn
D. Jupiter
Answer:
Venus
Explanation:
The closer a planet is to the Sun the faster it moves because the Sun can exert more gravitational force on it. Venus is the second closest planet to the Sun therefore the fastest out of the options.
Its Venus.
It is closer to the sun than the other planets on here.
2. Natural selection is an example of a mechanism of evolution. Does this mechanism produce a change
in individuals or populations? Explain.
Answer:yes
Explanation:natural selection does produce a change in individuals as well as populations. Explanation: Natural selection is a process through which mother nature screens for the organisms that are best adapted to survive in a habitat.
Compare the reproduction in Hydra and Amoeba?
Answer:
Hydra:
Reproduction by budding in Hydra.
Amoeba:
Reproduction by binary fission in Amoeba.
Hydra:
Budding means sexual reproduction in which a new organism develops from a bud in the parent.
Amoeba:
Binary fission is the type of asexual reproduction in which the parent divides to give rise to two daughter organisms.
Hydra:
In budding process, bud is simply an outgrowth of cells at one particular site.
Amoeba:
The parent replicates its genetic material and divides it equally between the two daughters in binary fission.
Hydra:
The bud or the newly formed organism remains attached to its parent until maturation.
Amoeba:
Both the cytoplasm and the nucleus of the parent divides into two.
Assume that you discover a new human gene that you believe is located on the Y chromosome although not in the region (pseudoautosomal) of the Y that is homologous with part of the X chromosome. How would you map this gene with respect to the other genes on the Y chromosome
Answer:
by performing a bioinformatic analysis in order to discover Y chromosome-linked mutations associated with defective phenotypes. In this case, it is expected to discover two or more loss of function mutations located in the coding region of the target gene on the Y chromosome in different males, and then associate such mutations with altered phenotypes caused by the inactivation (loss of function) of this gene
Explanation:
The genes located on the Y chromosome exhibit a uniparental mode of inheritance (i.e., these genes are only transmitted from father to their sons). This situation makes difficult to map the target gene since recombination does not occur for genes that are only located on the Y chromosome, hampering the development of a linkage map containing this gene. In this case, it is possible to directly associate genetic mutations located at the same genomic region (locus) on the Y chromosome with a particular altered phenotype in males carrying these mutations, which can be in principle associated with the inactivation of the target gene (loss of function mutations) in these individuals.
which of the following are parts of the biosphere. choose all that apply
river
deer
tree
mountain
mushroom
There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs describing at least three of them in detail. Provide at least one example for each line of evidence.
(I need the full three to four paragraphs ASAP please please please)
Answer: Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
11 Pause
Help
In the classification of organisms, which is the correct order of taxonomic groups from broadest to most specific?
A Order ----> Domain -> Genus
B. Class ---> Family -----> Order
Oc. Kingdom ----> Class -----> Phylum
D. Family ----> Genus ----> Species
Sion out
1:05
Answer:
I guess (D)
Explanation:
Linnaeus' hierarchical system of classification includes seven levels called taxa. They are, from largest to smallest, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Napollion Crossing The Alps
Answer:
Napoleon Crossing the Alps (also known as Napoleon at the Saint-Bernard Pass or Bonaparte Crossing the Alps; listed as Le Premier Consul franchissant les Alpes au col du Grand Saint-Bernard) is a series of five oil on canvas equestrian portraits of Napoleon Bonaparte painted by the French artist Jacques-Louis David ...
Explanation:
please give me brainlist and follow
Which of the following scientists are accredited with discovering DNA?
Group of answer choices
Einstein
Watson and Crick
Gregor Mendel
all of these
Answer:
Watson and Crick
Explanation:
what is cell and its function
Cells are the basic building blocks of all living things.
They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
[tex]\sf\huge\underline\purple{Cell:-}[/tex]
Definition:-
“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”[tex]\rightarrow[/tex] Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.
[tex]\rightarrow[/tex]Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids.
[tex]\sf\large\underline\purple{Functions:-}[/tex]
Following are the various essential functions of cells:
Cells provide structure and support to the body of an organism.The cell interior is organised into different individual organelles surrounded by a separate membrane.The nucleus (major organelle) holds genetic information necessary for reproduction and cell growth.Every cell has one nucleus and membrane-bound organelles in the cytoplasm.Mitochondria, a double membrane-bound organelle is mainly responsible for the energy transactions vital for the survival of the cell.Lysosomes digest unwanted materials in the cell.______________________________
The amount of solar radiation received by the earth is greatest
at
a
The equator
b The mid-latitudes
С
The poles
d None of the above
What happens if the mass of the elements is greater compared to smaller ?
Hello. More information is needed to answer your question accurately. However, I will try to help you in the best possible way
If you are referring to what happens if the mass of an atom is greater compared to an atomic number, we can say that there is nothing too much, since it is normal for the atoms to have a mass slightly greater than the atomic number. The mass of an atom can never be less than the number of protons added to the number of neutrons. An atom with greater mass has a greater number of electrons and neutrons in relation to an atom of less mass and it is likely that the atom of less mass will donate or share electron with the atom of greater mass so that both reach the electric balance.
100 POINTS! AND GIVE EXPLANATION!
a student made this model of carbon dioxide moleclue. it has one carbon atom and two oxygen atoms what is the correct way to write carbon dioxide the chemical name for
A: C2O
B: C²O
C: CO2
D: CO²
Answer:
CO₂
Explanation:
In chemistry we use subscripts after the element represented by that amount.
Answer:
C: CO2
Explanation:
Carbon has four valence electrons. Oxygen needs two valence electrons to become stable. A carbon dioxide molecule is a combination of one carbon atom and two oxygen atoms, CO2. Because carbon dioxide includes two different elements, it is a compound as well as a molecule.
Hope this helped!!!
Haploid cells have _____ and diploid cells have _____ of its DNA.
A.
two copies, one copy
B.
one copy, two copies
C.
two copies, four copies
D.
one copy, four copies
Answer:
B. one copy, two copies
Explanation:
Haploid is 23 chromosomes, so there is one copy of each human chromosome while diploid is 46 chromosomes, so there are two copies of each human chromosome.
Halpoid refers to a cell with a single set of chromosomes
Diploid refers to a cell with two sets of chromosomes.
Question:
Using a specific example, discuss the importance of electrons in the transfer of energy in living systems.
Answer: The transfer of energy in the form of electrons allows the cell to transfer and use energy in an incremental fashion. The principle electron carriers are NAD+ and NADH because they can be easily oxidized and reduced, respectively.
Explanation:
Electrons are very significant in the steps of energy transfer in the living body cells.
When the electrons are displaced from the molecule it gets oxidized which results in a reduction in the potential energy.
Electrons transfer is very important because most of the power is stored in the atoms in the form of electrons that are required for cell functioning.The chief electron transporters are NADH and NAD⁺ they reduce and oxidizes the compounds.NAD⁺ is oxidized and NADH is the reduced form of the molecules.The living structures cannot save a large amount of energy and hence they collect them in the form of ATP and electrons.To learn more about the importance of electrons in living organisms follow the link:
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List advantages and disadvantages of using scientific models.
Answer:
Explanation:
disadvantages:
Models do not behave exactly like the things they represent. Accuracy—In order to make models simplistic enough to communicate ideas some accuracy is lost. For example, ball and stick models of atoms do not show all the details that scientists know about the structure of the atom.
advantages:
When students are engaged in scientific modeling, they are able to notice patterns and develop and revise representations that become useful models to predict and explain--making their own scientific knowledge stronger, helping them to think critically, and helping them know more about the nature of science.
The advantage of a scientific model is it allows complicated processes to be predicted and simplified. A model's drawback is that it could be deceptive and open to numerous interpretations.
What is a scientific model?The advantages are:
Students who participate in scientific modeling are better able to identify patterns and create and revise representations that become useful models to predict and explain, strengthening their own scientific knowledge and fostering critical thinking. They also gain a better understanding of the nature of science.The disadvantages are :
Models don't always act the same as the things they're meant to represent. Accuracy—Some accuracy is lost when models are simplified to the point where they can convey concepts. For instance, the specifics that scientists are aware of regarding the structure of the atom are not depicted in full by ball and stick representations of atoms.Thus, the advantage and disadvantages are written above.
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"What do the four genotypes inside the 4 boxes of a Punnett Square represent?
Answer:
They represent the percent chance to inherit a type of genotype. Recessive alleles, dominant alleles, heterozygous have chances to appear based off the parent alleles.
The brain send signals that control the speed at which food moves through the digestive system. What systems are involved?
A.Circulatory, Immune, digestive
B.Muscular, Digestive, Immune
C.Digestive, Muscular, Nervous
D.Respiratory, Endocrine, Digestive
describe how the mammalian heart is adapted to it's function
Answer:
The ventricles are thick walled; to pump blood to the lungs and the rest of the body. The left ventricle has thicker wall to create more pressure because it pumps blood for longer distances round the body; while the right ventricle pumps blood to the lungs close to the heart.
3. Most of the traits expressed in a person's phenotype are determined by Is
Most of the traits expressed in a person's phenotype are determined by is Phenotype.
What is Phenotype?Phenotype refers to an individual’s observable traits, such as height, eye color and blood type. A person’s phenotype is determined by both their genomic makeup (genotype) and environmental factors.
An observable characteristic is simply referred to as a "phenotype." Pheno, which has the same root as the term "phenomenon," simply means "observe."
It can therefore refer to anything from a common attribute, like height or hair color, to the presence or absence of a disease. It is also an observable type of an organism.
Therefore, Most of the traits expressed in a person's phenotype are determined by is Phenotype.
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Which of the following are functions of the reproductive organs in animals?
I. Produce sperm
II. Support the body
III. Protect the internal organs
IV. Make the eggs
I and II
II and IV
I and IV
II and III
Answer:
c
Explanation:
I and IV are the functions of the reproductive organs in animals.
What are Reproductive organs?
The female reproductive system serves a number of purposes. It aids in sexual reproduction in addition to enabling sexual activity.
The fertilized egg is then transferred to your uterus, where the lining has expanded due to the regular hormones produced during your menstrual cycle (also called your reproductive cycle).
The fertilized egg can implant into the thicker uterine lining once it's within your uterus and continue to grow there. Your menstrual period causes the uterine lining to shed if implantation doesn't occur. The female reproductive system also creates sex hormones that keep your menstrual cycle regular.
Therefore, I and IV are the functions of the reproductive organs in animals.
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Explain the relationship between mutations, adaptations,
natural selection, and extinction.
Answer: A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
Explanation:
Answer:
A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
Explanation: got it on ed :)
Sexual reproduction results in offspring that are *blank*
from both parents?
A. different
B. same
C. opposite
D. none of these
Answer:
I would put unique but since that's not a choice, probably different
Explanation:
Answer:
A. Different
Explanation:
In sexual reproduction, the offspring inherits traits from both parents. They are not an exact copy of either but have traits from both. Hope it helps :)
give three example of fungi
Answer:
Yeasts
mold
mushrooms
Explanation:
Oxygen and air are? Abiotic or biotic 
oxygen and air are abiotic
Answer:
Oxygen and air are both abiotic because they do not have carbon atoms, therefore they are non living substances.
How do invasive species usually affect the availability of natural resources in an ecosystem?
PLEASE HELP ME
Answer: Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. ... Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats.
Explanation:
what are some similarities for prophase and telophase
Answer:
Both prophase and telophase have a complete set of chromosomes and organelles.
1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
J. Mutation
K. Independent assortment
L. Mitosis
M. Fertilisation
Answer:
Mitosis
Explanation:
Mitosis is not a source of genetic mutation because it take place mostly in the somatic cells. This is because it does not lead to the production of gametes . In mitosis, the parent cells divide into two daughter cells and each daughter cells are genetically identical to the parent cell because they carry the same number of chromosomes as the parent cell. There is no genetic variation in this.