The final stage of development that these offspring could reach before development stops is blastocyst.
A healthily developed embryo will include six to ten cells three days after fertilization. The fertilized egg develops into a blastocyst, a rapidly dividing ball of cells, by the fifth or sixth day. The innermost collection of cells will develop into the embryo. The outer group will develop into the cells that support and protect it.After the blastocyst stage, chromosomal abnormalities are tested for during pregnancy.Hence after blastocyst stage is achieved the the further development and nourishment structures begin to form. Thus, the fertility disorder will halt the development of offspring at the blastocyst stage.learn more about blastocyst here: https://brainly.com/question/3420683
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What does a food web show?
A. how much energy gets transferred between trophic levels
B. the complex interactions and feeding relationships between organisms within an ecosystem
C. the cycle of organic materials in an ecosystem
PLEASE HELP
Answer:
B
Explanation:
The answer is B because A is an energy pyramid, and it cannot be C because a food web is not a cycle as it doesn't restart.
what is the significance of test cross
Answer:
The test cross is performed to determine the genotype of a dominant parent if it is a heterozygous or homozygous dominant. On the basis of the results obtained in the ratio of the offspring, it can be predicted that the parent is having which genotype.
Match the steps in the cell cycle in the correct order
1.
final preparations for division
2.
chromosomes uncoil and nucleus reforms
3.
chromosomes condense
4.
chromosomes line up
5.
chromosomes get pulled apart
6.
cell growth
7.
the cytoplasm and organelles divide, and now there are two identical cells
8.
DNA replication
a.
S
b.
anaphase
c.
telophase
d.
metaphase
e.
G1
f.
cytokinesis
g.
prophase
h.
G2
Answer:
1. Chromosomes line up - metaphase
2. Cell growth - G1
3. Final preparations for division - G2
4. Chromosomes get pulled apart - anaphase
5. DNA replication - S
6. Chromosomes condense - prophase
7. Chromosomes uncoil and nucleus reforms - telophase
8. The cytoplasm and organelles divide, and now there are two identical cells - cytokinesis
Explanation:
There are four primary phases, or stages, in the cell cycle, which is a systematic process. Each stage has a goal that has to be achieved before moving on to the next. G1, S, G2, and mitosis are the stages.
There is growth during the G1 phase. A lot of protein is produced and water is pumped in, increasing the volume of the cell. The DNA is also examined at this time to see whether there has been any damage. The G1 phase precedes the S phase, therefore before going into S phase, the cell must make sure it has enough energy reserves.
The cell duplicates its DNA during the synthesis phase, also known as the S phase. DNA content doubles due to the duplication of all chromosomes. The compact state of DNA is created by proteins, which do not exist in and of themselves. Therefore, in order to ensure that the new DNA is properly packed when DNA is replicated, new packaging proteins must be produced. Histones are the proteins that house DNA. The production of new DNA is closely linked to the production of new histones.
A cell multiplies its organelles during the G2 phase. Right before the cells divide into two distinct cells during mitosis, the G2 phase occurs. There must be distinct functioning organelles in each daughter cell. Organelles like the golgi and endoplasmic reticulum are linked networks of sizable membrane pouches that may change size. Other organelles, including mitochondria and chloroplasts, are separate structures that must separate similarly to how cells do.
The process of physically dividing a cell into two daughter cells is called mitosis. Prophase, metaphase, anaphase, and telophase are its four basic stages. The nuclear membrane deteriorates as the chromosomes thicken during prophase. The center of the cell's chromosomes align during metaphase. One chromosome splits in half during anaphase, sending one half to either side. The telophase is characterized by the pinching together of the cell's centre to form two separate cells.
Lipase is produced in structure labeled and it functions to digest lipids in the structure labeled
According to the research, lipase is produced in the pancreas and it functions to digest lipids.
What is lipase?It is an enzyme secreted by the pancreas, involved in fat digestion and fat absorption.
That is, it catalyzes the hydrolysis of the steric bonds of fatty acids and glycerol of triglycerides and phospholipids.
Therefore, we can conclude that according to the research, lipase is produced in the pancreas and it functions to digest lipids.
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Some hormones bind to ion channels on neurons and cause them to open. This would be an example of a:
a. ligand-gated channel
b. mechanically gated channel
c. voltage-gated channel
d. none of the above are correct
The hormones that bind to ion channels on neurons and cause them to open represent an example of ligand-gated channels (Option a).
What are ligand-gated channels?Ligand-gated channels are specific receptors on the cell membrane that bind to different molecules.
This binding can cause a concomitant cellular response such as activating a phosphorylation-associated signaling pathway.
In conclusion, hormones and their receptors are an example of ligand-gated channels (Option a).
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Craters on the Moon were created by:
equipment from human explorations.
satellites.
meteorites.
comets.
5x5 the endmonwf fee I'd done lost wvnssjssi
How is a phoshpodiester bond formed?
Explanation:
A phosphodiester bond occurs when two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds
Explanation:
A phosphodiester bond forms when two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds. Phosphodiester bonds are central to all life on Earth,[fn 1] as they make up the backbone of the strands of nucleic acid
Identifying Conditions for Natural Selection Complete the sentences to identify the conditions that are necessary for natural selection. The environment needs to change. In this lab, the of the light was the change to the environment. Populations must have some Organisms must have a specific the majority of the survivors were light red. variation. In the bean population, the color of the beans varies. in order to survive and reproduce. During the period of red light pollution, ✓ Done Identifying Conditions for Natural Selection Complete the sentences to identify the conditions that are necessary for natural selection . The environment needs to change . In this lab , the of the light was the change to the environment . Populations must have some Organisms must have a specific the majority of the survivors were light red . variation . In the bean population , the color of the beans varies . in order to survive and reproduce . During the period of red light pollution , ✓ Done
Color, Genetic & Trait is the correct answer.
Complete the sentences to identify the conditions that are necessary for natural selection?The environment needs to change. In this lab, the color of light was the change to the environment.
Populations must have some genetic variation. In the bean population, the color of the beans varies.
Organisms must have a specific trait in order to survive and reproduce. During the period of red light pollution, the majority of the survivors were light red.
Thus, Color, Genetic & Trait is the correct answer.
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Answer:
color genetic and trait
Explanation:
i read the book
Which organelle is labeled H?
Answer: H labeled the cell membrane
give the result of this study why can't the researcher draw a causal connection between behavior disorder and temperament
Answer:
El DSM- V lo define como un patrón repetitivo y persistente de comportamientos en los que no se respetan los derechos básicos de los otros, las normas, reglas sociales o leyes
If a population doubles in the course of 100 years, its growth rate would be approximately ________%.
Answer:
The population increases at a rate of approx. 0.70% per year.
Explanation:
The population (P) as a function of time (t) is as follows:
[tex]P = P_0(1 + i)^t.[/tex]
Given that the population doubles in 100 years, let's calculate [tex]i[/tex]:
[tex]2P_0 = P_0(1+i)^{100}\\\\(1+i)^{100} = 2\\\\1 + i = 2^{\frac{1}{100}}\\\\1 + i = 1.0069556\\\\i = 0.0069556[/tex]≅ [tex]0.70[/tex]%
What is special about animals that allows them to be mobile in some way?
They are multicellular.
Their brains are bigger, so they can move.
Their cells lack a rigid cell wall.
They have fur which helps them to run.
The lack of a rigid cell wall is an animal feature that allows them to be mobile in some way.
What is the cell wall?The cell wall is a cellular structure (organelle) that provides support to plant and fungi cells.
Animals are mobile because they do not have this rigid structure that otherwise will hamper their motion.
In conclusion, animals cells do not have cell walls which helps them to be mobile.
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How is the Douglas fir doing?
The Douglas fir adapted to enable its survival in the taiga biome due to waxy needles.
What is Douglas fir?Douglas fir may be defined as any type of a genus of tall evergreen timber trees of the pine family having stout bark, pitchy timber, and drooping cones with expanding branching.
Douglas-fir has elongate, narrow, and waxy needle-shaped leaves. The presence of waxy leaves precludes the thrashing of water through the process of transpiration and also controls freezing and leaves drying out.
The complete question is as follows:
How has the Douglas-fir adapted to enable its survival in the taiga biome?
low growingperennialwaxy needlessurvive on limited nutrientsTherefore, the correct option is C, i.e. waxy needles.
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which best describes the structure o a DNA molecule
Explanation:
DNA is made up of repeating units or chains are arranged in the form of a double helix and are held together by hydrogen bonds
What if the surface of. A bacteria cell was not very antigenic. What would this mean for the host
Answer:
It would be much easier for the immune system to eradicate the bacteria
Whats the correct answer answer ASAP for brainlist
Which liquid would be the most difficult to raise or lower the temperature of?
OA. One with a low density
OB. One with a high density
C. One with a low heat capacity
OD. One with a high heat capacity
SUSMIT
Answer:
OD
Explanation:
Since it has a high heat capacitive it will be able to store much more energy and therefore will not be easy to raise or lower temperature
How is a hydrolysis reaction the opposite of a condensation reaction?
Condensation processes include the formation of bonds between molecules and their combining, with the consequent loss of a water molecule. Since a chemical bond is being broken by the addition of water and frequently with the help of an enzyme that catalyzes the reaction, hydrolysis is related with bond breaking.
A hydrolysis reaction is the opposite of a condensation reaction in terms of the chemical process involved. In a condensation reaction, two or more smaller molecules combine to form a larger molecule, releasing a water molecule as a byproduct.
This process is also known as dehydration synthesis because it removes water to form a bond between molecules.
On the other hand, in a hydrolysis reaction, a larger molecule is broken down into smaller molecules by the addition of a water molecule.
The water molecule is split into its components, with a hydroxyl group (-OH) attaching to one part of the molecule and a hydrogen ion (H+) attaching to the other part, effectively breaking the bond between the two subunits.
In summary, a condensation reaction builds larger molecules by removing water, while a hydrolysis reaction breaks down larger molecules by adding water.
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which statement describes two organ system working together to make an aimal run away from danger
Answer:
The nervous system sends signals that cause the adrenal glands to release hormones. This statement describes two organ systems working together to make an animal run away from danger
How do adrenal glands and nervous system work together?
The pituitary and adrenal glands create hormones that govern growth, stress, sexual function, and chemical equilibrium in the body.
The hormones adrenaline and norepinephrine, which are responsible for human stress reactions, are produced by the adrenal glands.
Catecholamines are adrenal medulla hormones that also act as traditional neurotransmitters in the autonomic nervous system.
The adrenal medulla is neural tissue that has been changed, and its activity is controlled by a direct neural input.
As a result, the medulla works similarly to a sympathetic ganglion.
Explanation:
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How is the atmospheric oxygen that is taken in by living things for respiration replaced?
Explanation:
A) After living things use oxygen for respiration, they exhale the oxygen back to the atmosphere.
B) Photosynthesis uses the carbon dioxide that is exhaled by living things to make oxygen.
C) Weathering releases oxygen that is locked in rocks due to sedimentation.
D) Oxygen that is dissolved in water such as oceans is released.
causes of sickle cell anamia
In a phase diagram,which of the following is the term used for a substance held at a temperature and pressure where the solid ,liquid and gaseous states of substance exist simultaneously? A. triple point. B. critical point. C.absolute zero. D. critical temperature
Which of the following substances is responsible for donating H+ ions to act as a buffer when blood PH rises? A. oxygen b.carbon dioxide. C.carbonic acid .d.Carbon monoxide
In a certain plant red flowers are dominant over whote flowers. A plant heterozygous for red and a plant white flower are created. Which of the following is the expected proportion of phenotypes in the next generation? A. 3 red 1 white. B. 1 red 3 white. C. 2 red 2 white d. 4 red 0 white.
If a portion of a strand of DNA bases reads AGCTAGCGT3, what would the sequence of bases on the complementary strand read?,.
Which of the following are specific immune responses (select all that apply.) a. The formation of memory B cells. B. complement proteins binding to and destroying bacteria. C. antibody production. D. endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion
Which of the following is a mass within the ovary that secrets hormones to maintain the uterine lining during pregnancy. A. ovidcut. B.oocyte. C. umbilical cord. D corpus luteum
A myocardial infarction affects which of the following blood vessesls of the heart? A. pulmonary. B vena cava. C.coronary d. Aorta
The correct answers are triple point, Carbonic acid, Antibody production, endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion, Corpus luteum and Aorta.
What is triple point?In a phase diagram, triple point is the term used for a substance held at a temperature and pressure where the solid ,liquid and gaseous states of substance exist simultaneously.
Carbonic acid is a substance that is responsible for donating H+ ions to act as a buffer when blood pH rises.
Antibody production, endocytosis of a virus by a phagocyte lymphocyte. E. T lymphocyte activation and clonal expansion are specific immune responses.
Corpus luteum is a mass within the ovary that secrets hormones to maintain the uterine lining during pregnancy.
A myocardial infarction affects Aorta blood vessels of the heart.
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The amino acid chain breaks away from the ribosome and folds into a protein.
The ribosome moves along the mRNA. tRNA molecules bring the amino acids coded for by the RNA from the cytoplasm and begin to assemble them.
The RNA strand leaves the nucleus and travels to a ribosome.
The amino acid chain grows as more amino acids are brought from the cytoplasm.
Select the correct order of steps in the process of translation:
A.
1, 2, 3, 4
B.
2, 3, 4, 1
C.
3, 2, 4, 1
D.
4, 3, 2, 1
The correct order of steps is 3, 2, 4, and 1.
What is translation?It is a process whereby the genetic codes in transcribed mRNA molecules are translated into their respective amino acids.
The steps involved in translation are:
Transcribed mRNA leaves the nucleus and travels to the cytoplasm where it gets attached to the ribosometRNA molecules bring the amino acids coded for by the RNA from the cytoplasm and begin to assemble themThe amino acid chain grows as the mRNA molecules are read by the translation machinery (the ribosome) and more amino acids are brought from the cytoplasm.The amino acid chain breaks away from the ribosome and folds into a protein.Thus, the step is 3,2,4, and 1.
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Genetic modification is used to develop plant and animal species that have new traits. If genetically modified plants are introduced in a natural habitat, they may act in a manner similar to an invasive species. What could be the best solution to prevent them from becoming an invasive species?
a.
Use pest control
b.
Plant more native trees.
c.
Develop plants that are unable to reproduce.
d.
Use more fertilizer to promote the growth of genetically modified plants.
The best solution to prevent them from becoming an invasive species is to develop plants that are unable to reproduce. Thus, the correct option is C.
What are Invasive species?Invasive species may be defined as the group of organisms that are not indigenous, or native, to a particular area.
If such genetically modified plants have the characteristics of reproduction, then they produce offspring which are extremely different from the native population. This in the future leads to the process of speciation if can not be regulated in a limited manner.
Therefore, the correct option for this question is C.
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Part E: Write Your Paper
Write your research using your outline and the research you've collected. Be sure to proofread andrevise your writing to catch any errors in grammar, spelling , logic, or cohesion e. Remember that
you must add a works cited page at the end of your paper to give credit to your sources.
When you have completed your paper, submit it to your teacher along with this activity.
A good sample to use to write your essay about the cure for cancer is:
Define what cancer isMention the harmful things which cancer has causedMention the cure you have for cancerUse supporting details from reputable sourcesMake use of supporting evidenceState how this cure would help to ease the suffering of cancer patients.What is an Essay?This refers to the academic writing that is meant to inform, educate, entertain, or persuade a reader about a particular point of view.
Hence, we can see that based on the fact that you are writing an essay about the cure for cancer, it is important that you follow the above-mentioned tips to write a good essay.
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¿What is Bacteria?
..
Answer:
bacteria are mostly free-living organisms often consisting of one biological cell. This means they are unicellular organisms, unlike humans, who are composed of millions of cells. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, and the deep biosphere of Earth's crust.
Hope this helps!
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¿What is Bacteria?
They are the primitive beings that inhabit the planet earth, prokaryotic microorganisms, not visible to the nak-ed eye.
They lack organelles and a nuclear membrane, their genetic material is scattered in the cytoplasm.
There are 3 types of Bacteria which are :-
BacilliCoconutsHelicalI hope I've helped : )
Phenylthiocarbamide (PTC), also known as phenylthiourea (PTU), has the unusual property that it either tastes very bitter or is virtually tasteless, depending on the genetic makeup of the taster. There is a single gene which codes for a protein found in our tongues. PTC will bind with the protein if it present and a person will taste it. If the protein is not present, PTC will not bind and a person cannot taste it. The ability to taste PTC is often treated as a dominant genetic trait. The dominant allele, T, causes a person to be able to taste PTC, and the recessive allele is represented as t. Assume that a population is in Hardy-Weinberg equilibrium and 16 individuals out of 100 are unable to taste PTC.
What are the allele frequencies of T and t in this population?
A. The allele frequency of T is 0.80, and the allele frequency of t is 0.20
B. The allele frequency of T is 0.84, and the allele frequency of tis 0.16.
C. The allele frequency of T is 0.00, and the allele frequency of t is 0.40
D. The allele frequency of T is 0.50, and the allele frequency of t is 0.50.
Answer:
B. The allele frequency of T is 0.84, and the allele frequency of t is 0.16.
Explanation:
The Hardy-Weinberg equation is:
p2 + 2pq + q2 = 1
Where:
p = the frequency of the dominant allele
q = the frequency of the recessive allele
1 = the total number of alleles
Given that 16 individuals out of 100 are unable to taste PTC, we can calculate that the frequency of the recessive allele, q, is 0.16. We can then use the Hardy-Weinberg equation to solve for the frequency of the dominant allele, p:
p2 + 2pq + q2 = 1
p2 + 2p(0.16) + (0.16)2 = 1
p2 + 0.32p + 0.0256 = 1
p2 + 0.32p - 0.9144 = 0
(p + 0.32)(p - 2.84) = 0
p = -0.32 or p = 2.84
Since the allele frequencies must add up to 1, we know that p cannot equal -0.32. This leaves us with p = 2.84. Therefore, the allele frequency of the dominant allele is 2.84, and the allele frequency of the recessive allele is 0.16.
Ling made a study chart for science class.
Which organelle accurately completes the chart?
lysosome
cell wall
chloroplasts
endoplasmic reticulum
Lysosomes have lytic enzymes, the cell wall gives support, chloroplasts act in photosynthesis, and the endoplasmic reticulum act during protein and lipid synthesis.
What is the lysosome?The lysosome is an organelle that contains hydrolytic enzymes used to break proteins, whereas the cell wall is a structure that provides physical support to plant cells.
Chloroplasts are plant organelles used during photosynthesis and the endoplasmic reticulum acts during the production of proteins and lipids.
In conclusion, lysosomes, chloroplasts (plant and algae) and endoplasmic reticulum are eukaryotic organelles with diverse functions, whereas the cell wall provides structural support to plant and fungi cells.
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Answer:
lysome
Explanation:
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A biologist studied a population of squirrels for 15 years. During that time, the population was never fewer than 30 squirrels and never more than 45. Her data showed that over half of the squirrels born did not survive to reproduce, because of competition for food and predation. In a single generation, 90% of the squirrels that were born lived to reproduce, and the population increased to 80. Which inference(s) about this population might be true?
A) The amount of available food may have increased.
B) The number of predators may have decreased.
C) The squirrels of subsequent generations should show greater levels of genetic variation than previous generations, because squirrels that would not have survived in the past will now survive.
As per the given scenario, the squirrels of subsequent generations should show greater levels of genetic variation than previous generations, because squirrels that would not have survived in the past will now survive. The correct option is C.
What is natural selection?Natural selection is an evolutionary mechanism. Organisms that are better adapted to their surroundings are more likely to survive and pass on the genes that helped them thrive. Species change and diverge as a result of this process.
As per the given scenario, the squirrels of subsequent generations should show greater levels of genetic variation than previous generations.
It is because squirrels that would not have survived in the past will now survive as the new generation have better adaptability than the previous one due to natural selection.
Thus, the correct option is C.
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Identify three ways humans contribute to extinction
1. Habitat destruction, harvesting, and pollution
2. Habitat destruction, reclamation, reproduction
3. Captive breeding programs, game preserves, zoos
4. All of the above
Answer: Human activities that influence the extinction and endangerment of wild species fall into a number of categories: (1) unsustainable hunting and harvesting that cause mortality at rates that exceed recruitment of new individuals, (2) land use practices like deforestation, urban and suburban development, agricultural cultivation, and water management projects that encroach upon and/or destroy natural habitat, (3) intentional or unintentional introduction of destructive diseases
Explanation: