What is the ploidy of daughter cells produced after Meiosis I and Meiosis II?
Meiosis II starts with two haploid parent cells and ends with four haploid daughter cells while maintaining the number of chromosomes in each cell.
After meiosis 1, what is the ploidy of the daughter cells?The DNA ploidy number is 2N at the end of meiosis I, and it is 2N at the end of meiosis II., it is 1N. The cell repeats its DNA during DNA replication before meiosis.
How many ploidies are there in meiosis 1 and 2?While Meiosis II divides the remaining set of chromosomes in a mechanism akin to mitosis, Meiosis I reduces the ploidy level from 2n to n (reduction) (division). Meiosis I is when the majority of the distinctions between the processes take place.
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If it takes a human liver cell about 22 hours to complete one cell cycle, how many hours would a typical liver cell spend on the process of DNA replication? Show your work.
If you observed an onion root tip under the microscope, which of the stages of the cell cycle would you expect more of the cells to be in at any given time-interphase or mitosis? Explain.
If it takes a human liver cell about 22 hours to complete one cell cycle, the number of hours that a typical liver cell would spend on the process of DNA replication is 9.9 hours.
If an onion root tip is observed under the microscope, most of the onion root tip cells would be in the interphase stage of cell division because the life span of a cell is mostly spent in interphase.
What is the time spent by the cell in DNA replication?The time in hours spent by the cell in DNA replication is determined as follows:
In a typical cell cycle, 45% of the time is spent on DNA replication.
If a human liver cell spends about 22 hours to complete one cell cycle,
45% of 22 hours = 0.45 * 22
45% of 22 hours = 9.9 hours
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the genetic code is degenerate. that means the genetic code is degenerate. that means multiple choice it is possible for a single codon to specify more than one amino acid. a particular amino acid can be specified by more than one codon. the second base in the codon is usually a variable base. the code allows for more than one type of stop codon. in two individuals of the same species, some codons may be different.
Answer:
A particular amino acid can be specified by more than one codon.
Explanation:
What is the differences of mitosis and meiosis
mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.
in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.
hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.
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What should the scientist do to best gain scientific understanding of this topic?
Analyze the results, and change the experimental methods to retest the hypotheses in a different way.
Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.
Analyze the procedural errors that took place in the experiment, and summarize these in a conclusion statement.
Repeat the experiment and adjust new data to support the original hypothesis.
Answer:
The correct answer would be - Analyze the results and change the experimental methods to retest the hypotheses in a different way.
Explanation:
In a scientific investigation or experiment, if there is an unexpected result during testing a hypothesis. A Scientist must analyze the procedure and result to find the possible explanation or errors that led to a particular result.
After analyzing and finding what must have happened scientists need to do changes in the experiment setting or method and retest the hypothesis in a different way to a better understanding of the topic.
Jake has become very anxious ever since he started taking harder classes in his major.
The university's counselor diagnosed him with an anxiety disorder. Compare and contrast how the behavioral, humanistic, and cognitive approaches would view the origins and treatment of Jake's anxiety. Then, describe how psychologists view each of
the three approaches today."
The behavioral, humanistic, and cognitive approaches provide different perspectives on the origins and treatment of Jake's anxiety.
The behavioral approach would view Jake's anxiety as a learned response that has been reinforced over time. They might suggest that Jake's anxiety is a result of negative experiences or associations with his academic performance, leading to increased anxiety symptoms. Treatment would focus on identifying and modifying maladaptive behaviors through techniques such as exposure therapy and behavior modification.
The humanistic approach would emphasize Jake's self-actualization and personal growth. They might view his anxiety as a result of a discrepancy between his self-concept and the challenges he is facing in his major.
Treatment would involve providing a supportive and empathetic environment where Jake can explore his feelings and values, with the goal of helping him align his personal goals with his academic pursuits.
The cognitive approach would focus on Jake's thoughts and beliefs about his academic performance. They would suggest that his anxiety stems from negative and distorted thinking patterns, such as excessive self-criticism or catastrophic thinking.
Treatment would involve cognitive restructuring, helping Jake identify and challenge irrational thoughts, and developing more adaptive and realistic thinking patterns.
In contemporary psychology, these approaches are not seen as mutually exclusive, but rather complementary. Psychologists recognize that a multidimensional approach, integrating elements from different perspectives, can provide a more comprehensive understanding of psychological issues.
Treatment approaches often combine techniques from various approaches to address the unique needs of each individual, emphasizing a holistic and personalized approach to mental health.
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1. What is the function of the mitochondria in a cell?
2. What is the difference between a prokaryotic cell and a eukaryotic cell?
3. What is the function of ribosomes in a cell?
4. What is the function of the endoplasmic reticulum in a cell?
5. What is the difference between a plant cell and an animal cell?
6. What is the function of the Golgi apparatus in a cell?
7. What is the function of lysosomes in a cell?
8. What is the function of the cytoskeleton in a cell?
9. What is the difference between passive and active transport?
10. What is osmosis?
Answer:
1. The mitochondria are responsible for producing energy in the form of ATP through cellular respiration.
2. Prokaryotic cells are smaller and do not have a nucleus or membrane-bound organelles, while eukaryotic cells are larger and have a nucleus and membrane-bound organelles.
3. Ribosomes are responsible for synthesizing proteins in the cell.
4. The endoplasmic reticulum is responsible for protein and lipid synthesis and transport within the cell.
5. Plant cells have cell walls, chloroplasts, and larger vacuoles, while animal cells do not have cell walls, chloroplasts, or large vacuoles.
6. The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids for transport within the cell or for secretion outside the cell.
7. Lysosomes are responsible for breaking down and digesting waste materials and cellular debris within the cell.
8. The cytoskeleton is responsible for maintaining cell shape, providing support and structure, and facilitating cell movement and division.
9. Passive transport does not require energy and involves the movement of molecules from an area of high concentration to an area of low concentration, while active transport requires energy and involves the movement of molecules from an area of low concentration to an area of high concentration.
10. Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of high water concentration to an area of low water concentration.
I hope these answers are helpful! Let me know if you have any more questions.
Answer:
1. The function of mitochondria in a cell is to produce energy in the form of ATP through cellular respiration. Mitochondria are also involved in other cellular processes such as apoptosis (programmed cell death), calcium signaling, and lipid metabolism.
2. Prokaryotic cells are smaller and simpler in structure than eukaryotic cells. Prokaryotic cells lack a nucleus and other membrane-bound organelles, while eukaryotic cells have a nucleus and various membrane-bound organelles.
3. Ribosomes are responsible for protein synthesis in a cell. They read the genetic code stored in messenger RNA (mRNA) and use it as a template to link amino acids together in the correct order to form a protein chain.
4. The endoplasmic reticulum (ER) is involved in protein synthesis, folding, and modification. It is also involved in lipid synthesis, calcium storage, and detoxification of drugs and toxins.
5. Plant cells have a cell wall, chloroplasts, and a large central vacuole, while animal cells lack these structures. Additionally, plant cells are typically larger than animal cells.
6. The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids for transport to their final destinations. It consists of a series of flattened sacs called cisternae.
7. Lysosomes are involved in the breakdown of cellular waste and debris, as well as the degradation of damaged or unneeded cellular components. They contain enzymes that can break down various biomolecules such as proteins, lipids, and nucleic acids.
8. The cytoskeleton is a network of protein fibers that provides structural support to the cell, helps maintain cell shape, and enables cell movement and division. It is made up of three main types of fibers: microfilaments, intermediate filaments, and microtubules.
9. Passive transport is the movement of molecules across a cell membrane without the input of energy, while active transport requires the input of energy to move molecules against their concentration gradient. Passive transport includes diffusion, osmosis, and facilitated diffusion, while active transport includes primary and secondary active transport.
10. Osmosis is the diffusion of water across a selectively permeable membrane from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration). It is a type of passive transport and is important for maintaining the water balance in cells.
Hope this helps!
define ecological pyramid and indicate the limitations of ecological pyramid
Answer:
Ecological pyramid is a graphical representation showing the biomass or bioproductivity at each trophic level in a given ecosystem.
Limitations
The ecological pyramid does not take into account the same species belonging to more than one trophic level.
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Which phrase best describes the structure of a cell's plasma membrane?
a multilayered matrix of lipids with many folds
a folded inner layer with a smooth outer layer of proteins
a phospholipid bilayer with embedded proteins
a flexible layer of proteins
Answer:
Im not sure if this is right but i think it might be the multilayered one.
Explanation:
Hope you get it right!
how does learning about the organs help us understand how organ systems work?
help!
Answer:
Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system. ... On the right, a diagram of the circulatory system showing heart and blood vessels.
Explanation:
in which process is oxygen absorbed by an organism
Answer:
the process of breathing (inhalation)
Answer:
Respiration
Explanation:
Ap ex
Theory of Evolution concept map. I’m stuck on what to put :(
Answer;
what are the options
Explanation:
Marty uses a customized database to sort parts and track inventory. The customized database is an example of _____.
hardware
software
Answer
software
Explanation:
Humans are highly dependent on fossil fuels. However, like other
natural resources, fossil fuels are unevenly distributed around the world. For example,
nearly 67 percent of the world's reserves of crude oil are currently in the Middle East. Also,
Russia has more natural gas than any other country in the world. Use a cause-and-effect
relationship to predict how human use of fossil fuels will affect their distribution over time.
Answer: I predict that human use of fossil fuels will affect their distribution over time because.
Explanation: Because if we keep on using fossil fuels over and over we eventually loose all of it because nearly 67% of the worlds reserves of crude oil are currently in the Middle East. So if we keep on using it well then there won't be anymore fossil fuels left for us, And if we keep using it, it will also slowly kill us off and also kill everything else around us.
the organisms that feed on dead and decaying matter are called
A. Saprotrophs
B. Autotrophs
C. Heterotrophs
D. Parasite
The organisms that feed on dead and decaying matter are called Saprotrophs.
An organism that feeds on dead and decaying organic matter is called a saprotroph. These organisms are heterotrophic, which means that they obtain their food from other sources. They are important in the ecosystem because they break down dead organic matter and recycle it back into the soil, making nutrients available to other living organisms
Answer:
A. Saprotrophs
Explanation:
Saprotrophs are organisms that obtain their nutrients by feeding on dead and decaying matter. They play a crucial role in the ecosystem by decomposing organic material and recycling nutrients back into the environment.
These organisms secrete enzymes that break down complex organic compounds into simpler substances, such as sugars and amino acids, which they can absorb and utilize for their own growth and energy needs. Examples of saprotrophs include fungi (such as mushrooms and molds) and certain bacteria.
Unlike autotrophs, which can produce their own food through photosynthesis or chemosynthesis, saprotrophs rely on external sources of organic matter for their nutrition. They actively decompose dead plants, animals, and other organic materials, aiding in the process of nutrient recycling and decomposition.
Heterotrophs, on the other hand, are a broader category of organisms that obtain their nutrients by consuming other living or dead organisms. This includes saprotrophs, as well as other types of organisms such as herbivores, carnivores, and omnivores.
Parasites, meanwhile, are organisms that live in or on other organisms, known as hosts, and obtain their nutrients from the host while causing harm or damage to it. Unlike saprotrophs, parasites typically rely on a living host for their sustenance rather than feeding on dead and decaying matter.
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I need help with this practice problem solving *I’m thinking maybe D.)
This new extinction has a component that has been widely controversial, meanwhile, some argue that is caused by human activities others argue that is due to cyclic changes on earth, the truth is that there are elements supporting both so it is highly likely that both causes are contributing, how in what measure we cannot know at the moment. Therefore taking this into account we can say that the correct answer is the last option.
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How is dsRNA different in function from other types of RNA?
Responses
It contains thymine instead of uracil.
It's used in transcription instead of translation.
It's single-stranded instead of double-stranded.
It destroys mRNA instead of making proteins.
The viral RNA, dsRNA, blocks the expression of certain genes by degrading mRNA molecules. Option D. It destroys mRNA instead of making proteins.
What is dsRNA?
dsRNA is a viral bi-catenary RNA. It is a double-stranded molecule (double-strand, ds).
dsRNA is capable of silencing specific sequences of certain genes. The dicer enzyme cuts dsRNA molecules and produces siRNA small interfering RNA).
siRNAs suppress the expression of target genes when cutting messenger RNA into two halves.
The two mRNA halves are later degraded by the cellular machinery, leading to the suppression of gene expression.
Option D. It destroys mRNA instead of making proteins.
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Describe the development of the zygote until implantation occurs.
How does blood connect to the respiratory system ?
Answer:
The circulatory and respiratory system cooperate to circulate blood and oxygen all through the body.
Explanation:
Two porcupines have different parents. One has thick bristles, while the other has thin bristles.Why do they have different bristle thickness?
They have different bristles because they have different versions of genes that they inherit from their parents, given that these porcupines have different parents. These genes instruct or determine the thickness of their bristles.
d. What do your data tell you about how the intensity (amount) of light affects
the rate of photosynthesis performed by the plant? Remember that a rate
involves a change in amount over time. Does this answer make sense? Why
or why not?
This answer is supported by scientific research and makes sense based on the principles of photosynthesis. However, it's important to note that scientific knowledge is continuously evolving, and there may be further advancements or refinements in our understanding of photosynthesis and its relationship with light intensity since my knowledge cutoff in September 2021.
Based on the available data up until September 2021, it is well established that the intensity of light significantly affects the rate of photosynthesis in plants. Photosynthesis is the process by which plants convert light energy into chemical energy (glucose) that they can use as a source of fuel.
In general, as the intensity of light increases, the rate of photosynthesis also increases, up to a certain point. This relationship is often described by the concept of the "light saturation point." At low light intensities, the rate of photosynthesis is limited by the availability of light energy. As the light intensity increases, the rate of photosynthesis also increases because more photons are available for the plant to capture and convert into chemical energy.
However, beyond a certain light intensity, the rate of photosynthesis reaches a maximum level, and further increases in light intensity do not lead to a proportional increase in the rate. This is because other factors, such as the availability of carbon dioxide or the capacity of the plant's biochemical processes, become limiting factors.
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Which statement is true?
The primary function of a the ribosome is protein synthesis
The primary function of a the ribosome is protein synthesis
The primary function of the vacuole is cell division
The primary function of the vacuole is cell division
The primary function of the nucleus is to store nutrients
The primary function of the nucleus is to store nutrients
The primary function of the mitochondrion is movement.
The primary function of the mitochondrion is movement.
Answer:
The primary function of a ribosome is protein synthesis.
The backbones of DNA and RNA are
A) made of alternating sugars and phosphate groups.
B) very different, made of nucleotides in DNA and amino acids in RNA.
C) identical.
D) made of a chain of base pairs.
The backbones of DNA and RNA are made of alternating sugars and phosphate groups. So the correct option is A.
How are nucleic acids formed?Nucleic acids are macromolecules that will be formed by a column of phosphates and sugars, this will give support to the molecules. This type of union is quite stable since they are difficult to break and not any enzyme can break it. Nucleotides are made up of nitrogenous bases, a sugar, and a phosphate group. The phosphate will be a high energy bond.
Nucleic acids will carry information that will be hereditary and they will have the information to be able to produce proteins. These macromolecules will be stored mainly in the nucleus of the cell.
Therefore, we can confirm that the correct option is A. made of alternating sugars and phosphate groups.
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What type of tissue surrounds the slip disc with age epithelial tissue?
Answer:
It is Cartilage.
Describe the role of GA in a-amylase production and in germination. Provide evidence for your claim
Gibberellic acid (GA) plays a crucial role in a-amylase production and germination. GA stimulates the synthesis and release of a-amylase enzymes, which hydrolyze starch into sugars during germination. Experimental studies have demonstrated that the application of GA accelerates a-amylase production and enhances germination in various plant species
In terms of a-amylase production, GA stimulates the synthesis and release of this enzyme. a-amylase is responsible for breaking down starch into simpler sugars, which are then utilized by the plant for growth and development.
Studies have shown that applying GA to plant tissues or seeds results in an increased production of a-amylase, facilitating the conversion of stored starch into energy-rich sugars.
Regarding germination, GA is involved in breaking seed dormancy and promoting the growth of the embryonic plant.
It stimulates the production of hydrolytic enzymes like a-amylase, which enable the hydrolysis of starch reserves in the endosperm, providing the energy needed for germination and seedling establishment.
Additionally, GA helps in cell elongation and division, promoting the growth of the embryo and the emergence of the radicle.
Evidence for GA's role in both processes includes studies where the exogenous application of GA to seeds or plant tissues has been shown to enhance a-amylase production and promote germination.
Conversely, inhibiting GA synthesis or action results in reduced a-amylase activity and impaired germination. These findings support the critical involvement of GA in both a-amylase production and germination processes in plants.
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Is crick and Watson a type of genetic test
No, "Crick and Watson" is not a type of genetic test. Crick and Watson refer to James D. Watson and Francis Crick, who were scientists involved in the discovery of the structure of DNA. They proposed the double-helix structure of DNA in 1953, which provided the foundation for understanding genetic information and its role in heredity.
Genetic tests, on the other hand, are laboratory tests that analyze an individual's DNA or genes to provide information about their genetic makeup, potential genetic disorders, or predispositions to certain conditions.
These tests can be used for various purposes, such as diagnosing genetic disorders, predicting the risk of developing certain diseases, determining carrier status for genetic conditions, or providing ancestry and genealogical information.
While Crick and Watson made significant contributions to the field of genetics, they are not directly associated with genetic testing. Genetic tests are based on scientific advancements and technologies developed after their groundbreaking discovery of the DNA structure.
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Genetic diversity decreases the more species there are in an area. True or False
Answer:
False. Genetic diversity tends to increase as the number of different species in an area increases. This is because diverse habitats support a wider range of ecological niches, which in turn support a greater variety of species and genetic diversity within those species. However, it's worth noting that other factors such as habitat fragmentation, invasive species, and climate change can also affect genetic diversity in complex ways.
Explanation:
What is the difference between habituation from a neural perspective?
The difference between habituation from a neural perspective is that habituation refers to the fading of the response over the course of monotonous stimulation, and sensitization refers to processes of increased response.
What is the habituation process?Habituation is an example of non-associative learning in which there is an automatic decrease in the intensity of a response to a repetitive, weak stimulus, without serious consequences, which allows, for example, ignoring stimuli such as noise, the ticking of a clock, etc.
With this information, we can conclude that the difference between habituation from a neural perspective is that habituation refers to the fading of the response over the course of monotonous stimulation, and sensitization refers to processes of increased response.
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TTT 18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants 19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens 20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera 21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm 22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class 23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium 24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population 26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista 25. Ecology is a biological science that deals with all of the following except C. organism D. none
All of the options are chemical approaches to control micro-organism excepts: B Disinfectants
19. The scientific name for modern man is: B. Homo sapiens
20. kingdoms are prokaryotic organisms placed D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm
22. taxonomic groups contains closely related organisms A. Genus
23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium
24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi
25. Ecology is a biological science that deals with except: D. none
26. The organism that are consumer is D. Scavengers
What is the chemical approaches to control micro-organismDisinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.
Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.
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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants
19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens
20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm
22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class
23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium
24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population
25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none
26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers
Help pleaseeeee??!!!!!!!
Answer:
30 seconds becouse she walk 3 m in a sec so it will take her 30 seconds