the stage of the cell cycle where each chromosome is composed of two chromatids in preparation for mitosis is called phase____.
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The stage of the cell cycle where each chromosome is composed of two chromatids in preparation for mitosis is called phase S.
Each chromatid was duplicated as a result of S. The sister chromatids are still referred to as one chromosomes since they have a single centromere. The cells are in G2 and getting ready for M when finished.
phase S. The cell creates a full copy of the DNA in its nucleus during the S phase. Additionally, it makes duplicates of the centrosome, a structure that organizes microtubules. During M phase, the centrosomes aid in the separation of DNA.
A normal diploid somatic cell enters S phase with a 2N complement of DNA and ends it with a 4N complement of DNA. S phase is a period of extensive DNA synthesis during which the cell replicates its genetic material.
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Related Questions
Help me
The carrying capacity of a population is determined by its
A Population growth rate
B Natality
C Mortality
D Limiting factors
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The carrying capacity of a population is determined by its limiting factors. Limiting factors are the environmental factors that limit the growth, distribution, or abundance of a population.
These factors include availability of resources like food, water, and shelter, competition, predation, disease, and environmental factors like temperature, rainfall, and natural disasters.
As the population size increases, the limiting factors become more pronounced and restrict the growth of the population. The carrying capacity is the maximum population size that an environment can sustain with the available resources and limiting factors.
Therefore, the carrying capacity is determined by the balance between the population growth rate, natality, and mortality rates and the availability of resources and limiting factors.
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I really need you to answer this.
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Answer
A
Explanation:
Some animals don't eat a specific pray, and other hunt more than one specie, which means that they are all food for other organisms that are stronger than them.
Help need please. I really appreciate thank you
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Answer:
1.)The ability to extract DNA is of primary importance to studying the genetic causes of disease and for the development of diagnostics and drugs. It is also essential for carrying out forensic science, sequencing genomes, detecting bacteria and viruses in the environment and for determining paternity.
What are the reactants of products in the electron transport chain for cellular respiration?
Answers
Answer:
Electron succinate donor and nicotinamide adenine hydrochloride are the major biological reactants of the ETC (NADH).
These are produced via a process termed the cycle of citric acid (CAC).
Sugars and fats are divided into simple molecules like pyruvates, which subsequently enter the CAC.
Explanation:
Cellular respiration is described as the progressive enzymatic breakdown of glucose to produce energy, which in concert with ATP synthase, creates ATP.
The Cellular breathing method has 4 subdivisions; glycolysis, which disassembles glucose molecules to supply pyruvic acid molecules; a cancer cycle that further disassembles pyruvic acid with the aid of enzymes to provide four high energy substances, three of them NADH and one FADH2; The electron transportation chain in which electrons are conveyed and the energy released through a sequence of coenzymes and cytochromes; and lastly, the chemosmosis, where the energy emitted is utilized in transmitting protons from intermembrane space into a matrix with mitochondrial energy.
describe amendments 3 in 3 sentences
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A constitutional amendment to the documents of a government, organization, other type of entity. A constitution is often amended by inserting the necessary wording straight into the relevant parts.
What does amendment mean?The provisions of a contract or other instrument may be amended or supplemented. An amendment is a new addition or change that largely maintains the integrity of the original document. The most important and frequent basis for constitutional amendments is the limiting of the charter of fundamental rights.
What is an example of a amendment?A change, addition, or rephrasing of something with the goal of improvement is what is meant by the definition of an amendment. The amendments adopted to the United States Constitution are one example.
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which of the following statements are true about dna replication in eukaryotes? select all that apply. a. replication of the entire genome takes about ten minutes. b. a replication fork occurs at each growing point of the replicating chromosome(s) c. eukaryotes have many different chromosomes, with replication occurring in each at the same time d. replication occurs at the rate of about 500-5000 base pairs per minute e. multiple sites of replication are present on each chromosome
Answers
True statements
b. a replication fork occurs at each growth point of the replicating chromosome;
During DNA replication, a double-stranded DNA helix unwinds and splits into two single strands, creating a replication fork. A replication fork is the point at which two DNA strands are separated and a new strand is synthesized.
c. Eukaryotes have many different chromosomes, and each replicates simultaneously.
Eukaryotes have multiple chromosomes and replication occurs in all of them simultaneously.
d. replication occurs at a rate of approximately 500-5000 base pairs per minute.
The rate of DNA replication in eukaryotes is typically 500-5000 base pairs per minute.
e. each chromosome has multiple sites of replication.
DNA replication occurs at multiple sites on each chromosome called origins of replication. These origins are where the replication process begins and are distributed along the chromosome to allow efficient whole-genome replication.
False statements
a. Whole genome replication takes about 10 minutes.
Replication of an entire eukaryotic genome can take hours to days, depending on the size of the genome and the particular organism.
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What causes a cell to swell? Isotonic solution or hypotonic solution or hypertonic solution
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Answer:
In hypotonic solutions, there is a net movement of water from the solution into the body. A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.
Chuck just moved to Florida from Texas, and is applying for his Florida real estate license. However, Chuck's background check turns up an investigation for fraud back in Texas. What does this mean for Chuck
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Chuck, who just moved to Florida from Texas, and is applying for his Florida real estate license may face some difficulties in acquiring his license if his background check turns up an investigation for fraud back in Texas.
If the investigation for fraud turns out to be true, then Chuck will likely face more significant consequences and penalties under the law.In order to be a licensed real estate agent in Florida, the Florida Department of Business and Professional Regulation requires individuals to be of good character, be honest, trustworthy, and possess good business ethics. If the Florida DBPR uncovers information regarding a real estate applicant's past criminal record, they will evaluate the severity of the offense(s) and determine if the candidate should be licensed. Even if the candidate is permitted to be licensed, they may have limitations on the type of license they can obtain or may be required to operate under the supervision of another licensee, for instance. Chuck may be denied his Florida real estate license or may be required to fulfill additional requirements such as appearing before a committee or providing additional information.
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Question 3 of 10
Which event is likely to decrease the genetic variation in a population?
A. Homologous chromosome pairs lining up randomly before being
pulled apart in meiosis I
B. Failure of non-sister chromatids to cross over during meiosis
C. Independent assortment of chromosomes during metaphase I
D. Zygotes receiving a unique set of chromosomes from each
gamete
Answers
Genetic variety in a population is expected to decrease if non-sister chromatids fail to cross across during meiosis.
What causes a population's variation to decline?Genetic variety is produced over time by populations and can be specifically or stochastically suppressed by selection or genetic bottlenecks. Following a bottleneck, a small number of randomly chosen people form a founder population, which causes genetic drift.
What causes genetic variety to rise or decrease?Genetic variation can be increased by human mutations and alleles being created as a result of gene duplication, recombination, or other events. A population can generate new genetic variation within a few generations, hence a population with high rates of reproduction would likely have a high level of genetic diversity.
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How do you interpret air masses on a weather map?
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In general, air masses with warmer temperatures and higher humidity are depicted by red symbols, while air masses with colder temperatures and lower humidity are represented by blue symbols. There are four main air masses that are commonly labeled on weather maps, which include:
1) Arctic (A) - very cold and dry air that originates from the Arctic or polar regions.
2) Continental (c) - dry air that forms over landmasses.
3) Maritime (m) - moist air that forms over oceans or seas.
4) Tropical (T) - warm and humid air that forms near the equator.
Air masses can also be classified based on their source region, which is the area where they originate and acquire their temperature and moisture content. By analyzing the source region of an air mass, meteorologists can determine its likely weather patterns and track its movement across different regions.
Interpreting air masses on a weather map is essential to predicting local weather conditions and understanding how different atmospheric conditions interact with each other to impact weather patterns.
What is the driving force behind the carbon cycle?
Answers
Answer:
Respiration and photosynthesis
Answer:
The driving force behind the carbon cycle is respiration and photosynthesis.
Explanation:
because it is boi .>.
What condition cause the contractile vacuole to fill with water
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The condition that causes the contractile vacuole to fill with water is 'an increase in osmotic pressure within the cell'.
The contractile vacuole fills up with water in order to maintain homeostasis and prevent the cell from bursting due to osmotic pressure.
An increase in osmotic pressure occurs when there is a higher concentration of solutes outside of the cell compared to inside the cell. Water will then move out of the cell through osmosis, causing the cell to shrink.
In response to this, the contractile vacuole will fill up with water and contract to expel the excess water outside of the cell. This process is known as osmoregulation and is vital for the survival of cells in environments with varying osmotic pressures.
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Contractile vacuoles in certain organisms fill with water when the cell is in a hypotonic environment. The vacuole collects the excess water and expels it from the cell through exocytosis, preventing the cell from bursting.
Explanation:The contractile vacuoles in certain cellular organisms, like protists, fill with water due to exposure to a hypotonic environment, which has a lower solute concentration than the cell. In this environment, water tends to flow into the cell, causing it to swell. The contractile vacuole counteracts this by collecting the excess water and excreting it from the cell through a process known as exocytosis.
This is crucial for the cell's survival, as failing to remove the excess water could cause the cell to burst. For instance, in protists such as paramecia and amoebas that lack cell walls, their contractile vacuoles continuously pump out water to prevent cell lysis. The efficiency of this process is affected by the osmolarity of the surrounding solution, which influences the amount of ATP produced from cellular respiration.
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T/F Instinct, insight, and intuition are synonymous; that is, they are the same thing.
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Instinct, insight, and intuition are not synonymous; that is, they are not the same thing, the given statement is false because instinct refers to an innate, unlearned behavior that is genetically programmed in an organism.
Instinct is typically a fixed action pattern, meaning it is a sequence of behaviors that are executed without variation. Insight, on the other hand, refers to a sudden realization or understanding of something. It is a type of problem-solving that involves a breakthrough in thinking that allows for a solution to be found more easily.
Intuition refers to a sense of knowing or feeling that something is true or correct without having any evidence or logical proof to back it up. It is often associated with gut feelings or hunches. Overall, while all three terms relate to a type of knowledge or behavior that is not learned through conscious effort or education, they are distinct from one another. So the given statement is false.
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Many populations in a specific area or region at a certain time make up a O Community O Niche O Ecosystem O Population
Answers
Answer:
O Community
Explanation:
A community is made up of many populations within a specific area a certain period of time.
A population is group of organisms of the same species that can interbreed and produce viable offspring Populations of organisms in a specific area or region is known as a community. An example is a community made up birds population, human beings, lizards etc.What makes the MRSA strain of staph more dangerous than common bacteria?
Answers
Solution:
The correct answer is:
The answer lies in the resistance to antibiotics that occurs with this bacterium. Indeed, Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of staph bacteria that's become resistant to many of the antibiotics used to treat ordinary staph infections. This makes infections with this bacterium dangerous, as most antibiotics are given seem not to work in patients infected with this bacterium.
Need help ASAP! Will give brainliest;) NO LINKS please, WILL REPORT.
A). Tuna
B). Dog
C). Mold
D). Horse
Answers
Answer:
d horse ,................................ I think
5. In today’s global economy, goods flow from one country to another like never before, allowing the natural capital from one country to be utilized in many other countries. Some have argued that it is unethical for developed countries to fuel their consumptive lifestyles by using natural capital from poorer, developing countries. Do you agree with this viewpoint? Why or why not?
Answers
I agree because overexploitation of resources negatively affects the development of developing countries and increases inequalities between developed and developing countries.
Overexploitation of natural resources refers to the unsustainable use of natural resources (e.g., water, lands, etc).This phenomenon (overexploitation) may lead to the loss of biodiversity and even the extinction of many species, including plant and animals species.In the past, the overexploitation of developed countries to the natural resources from developing countries was erroneously justified as a method to initiate economic development in the Third World countries.However, it has been shown that the overexploitation of natural resources often leads to situations where populations become more vulnerable to demographic swings or conflict (e..g., deforestation may lead to desertification).In consequence, overexploitation of developed countries to the natural resources from developing countries is unethical because it increases inequalities between countries.Learn more in:
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How does climate change affect different groups of people????
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Answer:
Some folks will undoubtedly confront bigger difficulties than others. Those who live in locations exposed to coastal storms, drought, and sea level rise, as well as people in poverty, elderly individuals, and immigrant populations, may be particularly affected by climate change.
Explanation:
Photosynthetic organisms like grass are able to ________. Group of answer choices turn light energy from sunlight into sugars use water they take in through their leaves as a final electron acceptor use molecules in the air as a major source of carbon make all of their organic matter from organic molecules in the soil
Answers
use molecules in the air as a major source of carbon .
the processes of deletion, insertion, and substitution can alter genes in a skin cell. the altered genes will most likely be passed on to
Answers
Deletion, insertion, and substitution can alter genes in a skin cell, the altered genes will most likely be passed on to the next generation
The process of altering genes can happen due to deletion, insertion, and substitution. When any of these processes occur, it results in changes in the DNA sequence of the gene. The deletion process occurs when a certain nucleotide or a sequence of nucleotides is removed from the DNA strand, while insertion occurs when new nucleotides are added to the DNA sequence. Substitution, on the other hand, is the replacement of one nucleotide with another, and it can cause missense, nonsense, or silent mutations in the DNA sequence.
As a result of any of these processes, there may be alterations in the gene's function, leading to various consequences. The altered genes may then be passed on to the next generation through genetic transmission. This may result in inherited disorders or may have no noticeable effect on the offspring, depending on the type of gene involved. So therefore deletion, insertion, and substitution can alter genes in a skin cell, the altered genes will most likely be passed on to the next generation.
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help me !! …………… …….
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The second answer is They move because of convection currents in the mantle
Explain how sneeze research might help to slow the spread of influenza
Answers
The research on sneezing is helpful for the prevention of the spread of influenza. The flu is a viral disease, and most of the sneezing is due to viral infections. Hence, it would be helpful.
What is a viral infection?
The viral infection is easy to spread from one infected individual to another. These viruses replicate and spread in the body and come out of the body through the sneeze, water droplets from the patient, etc. The influenza virus is a virus, so studying the sneeze and its causal organism is helpful for stopping the spread of the influenza virus among people. It is helpful for the preparation of vaccines or some medications.
Hence, in many ways the research on sneezing is helpful for the prevention of influenza.
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IM GIVING 50 POINTS please fill in the chart all the information is on that slide
Answers
To complete a data table with the number of differences present between the organisms you have compared in the human protein sequence, you will need to follow these steps:
The StepsObtain the protein sequences of the organisms you want to compare, including the human protein sequence.
Align the protein sequences using a sequence alignment tool, such as Clustal Omega or MUSCLE.
Identify the positions in the aligned sequences where differences (i.e., substitutions, insertions, and deletions) occur between the organisms being compared and the human protein sequence.
Count the number of differences that occur at each position and record this in the data table.
Summarize the total number of differences across all positions for each organism being compared and record this in the data table.
Here is an example of what the data table might look like:
Organism Total number of differences
Human 0
Chimpanzee 15
Gorilla 18
Orangutan 22'
In this example, the table shows the total number of differences between each organism's protein sequence and the human protein sequence.
The chimpanzee has 15 differences, the gorilla has 18 differences, and the orangutan has 22 differences.
The human protein sequence is used as the reference sequence, and the number of differences is determined by comparing each organism's sequence to this reference sequence.
P.S I did not fill in the information for you but showed you how to fill the chart in the information above
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these cells were treated with colchicine. in what phase were the cells frozen?
Answers
Colchicine is a medication used to treat gout and inflammation.
It can also be used to treat familial Mediterranean fever (FMF).
However, it is most commonly used to treat gout.
It works by reducing the amount of uric acid in the blood.
Colchicine works by blocking the activity of an enzyme called xanthine oxidase.
This enzyme is responsible for converting purines into uric acid.
The cells were treated with colchicine, which is a drug that inhibits microtubule polymerization.
Colchicine was used to freeze the cells in metaphase.
Metaphase is the stage of mitosis where the chromosomes are aligned at the equator of the cell and are ready to be separated into two daughter cells by the spindle fibers.
In this phase, the chromosomes are most visible and easiest to observe.
The spindle fibers attach to the centromeres of the chromosomes and pull them apart.
This is why the chromosomes are visible during metaphase.
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there are three significant differences between a plant and an animal cell. Two are found only in plant cells and one has a very different size when it is found in the plant cell. What are the three structures
Answers
Answer:
cell wall, vacuole and chloroplast
In a laboratory investigation, students measured the rate of fermentation in yeast cells. Data was collected by student groups
showing how the rate of fermentation is altered by:
1. pH of the reaction mixture;
2. amount of yeast added to the reaction mixture;
3. type of sugar added to the reaction mixture.
Students were instructed to find the optimum conditions for a new fermentation process to be used at the local bakery. The one
constant in all experimental groups is that the temperature remain at 25°C. Student teams used the Vernier Equipment
Pressure sensor, LabPro interface, gas pressure accessories kit, a clock with second hand, water bath, reaction flask with valve
and tubing, turkey baster, thermometer, source of hot and cold water, balance, 25 ml. graduated cylinder, buffer pH 7, yeast, and
sucrose,
A control situation was run: a. temperature 25°C, b. 25 ml. of buffer pH 7, c. 2 grams of sucrose, d. 2 grams of yeast. The three
substances were combined in the reaction flask and mixed by swirling. The flask and solution was placed in the 25°C water bath
with the stopper firmly in place but, with the valve open. After 10 minutes, when the yeast was active, the flask was sealed by
closing the valve. The collect button was clicked ON. A line, representing the pressure, appeared on the graph and individual
measurements appeared in the data table.
Data was recorded for 300 seconds or until the pressure reached 120 kPa.
One student group's data for amount of yeast can be seen here. Describe the students' results.
Answers
The students' results show that the rate of fermentation increases as the amount of yeast added to the reaction mixture increases.
How to explain the informationThe rate of fermentation increased because more yeast cells means more enzymes available to break down the sugar into ethanol and carbon dioxide. The students also found that the rate of fermentation is fastest at a pH of 7, which is neutral.
This is because the yeast enzymes work best at a neutral pH. The students' results suggest that the optimum conditions for fermentation are a temperature of 25°C, a pH of 7, and an amount of yeast of 4 grams.
The time to reach 120 kPa decreases as the amount of yeast increases. This is consistent with the students' hypothesis that the rate of fermentation increases as the amount of yeast increases.
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Explain how a brand new DNA strand can be formed from an “old” strand of DNA.
Answers
Answer:
Hello!
Explanation:
2 Screenshots.
Draw the simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right. Show ali lone pairs. If you need to expand part of the structure to show some lone pairs, expand it by drawing in all atoms and bond lines.
Answers
The simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right are shown below. These lone pairs are important for the bonding interactions between the oxygen atoms and the nitrogen atoms in the structure.
The simplest set of curved arrows that shows how the structure on the left could be turned into the structure on the right is shown below:
[Structure on the left]
[Structure on the right]
To convert the structure on the left into the structure on the right, the atoms would need to be rearranged to form the tetrameric structure with a linear arrangement of the amino acid chains.
This could be achieved by pulling out one of the amino acid chains from the structure on the left and attaching it to one of the remaining chains. The remaining three chains would then be arranged in a linear fashion, with each chain containing one amino acid chain from the original structure.
In the structure on the right, all of the lone pairs on the oxygen atoms are shown. These lone pairs are indicated by the curved arrows pointing outwards from the oxygen atoms.
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Which element is found in period 3, group 2? *
Answers
Answer:
Magnesium
Explanation:
Magnesium
Answer:
sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.
Explanation:
The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block.
what are the two major steps in protein synthesis?
Answers
Answer:
light reactions and the Calvin cycle
Explanation:
I did it