"methotrexate Is A Drug That Inhibits The Production Of The Nitrogenous Base Thymine Within A Cell. Would (2024)

Biology High School

Answers

Answer 1

Methotrexate would be an effective drug to treat cancer as it hinders DNA replication, which is required for cell division.

Cancer is an uncontrolled growth of cells, which occurs through cell division. For a cell to divide and form new cells, it requires a copy of genetic material. This genetical material DNA contains nitrogenous bases..

Methotrexate inhibits Dihydrofolate reductase which is involved in base generation. In absence of bases, DNA replication can not occur and hence cell will not divide. Thus it is an effective drug in controlling cancer.

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Related Questions

What is Kabuki theater known for?

Answers

Kabuki, traditional Japanese popular drama with singing and dancing performed in a highly stylized manner. A rich blend of music, dance, mime, and spectacular staging and costuming, it has been a major theatrical form in Japan for four centuries

What is Kabuki theater ?

The art of kabuki is full of showmanship. Extensive set design, striking makeup, bizarre wigs, and perhaps most importantly, the actors' exaggerated actions are all part of it.

Japanese traditional performance art known as kabuki is well-known throughout the world. Kabuki dramas tell stories based on local myths and history while using music, dance, and mime as well as ornate costumes and scenery. Its beginnings were modest and a little contentious, despite its current widespread acclaim.

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Identify the answer choice that correctly orders the types of cells from least to most differentiated.

Answers

Correct orders the types of cells from least to most differentiated is:

totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron.

What is the development of the various stages of stem cells?

The development of the various stages of stem cells in the embryonic stage is described here:

Totipotent stem cells: Right after the mitosis of the zygote which results in the formation of two identical daughter cells, which are totipotent stem cells. Totipotent stem cells possess the ability to give rise to 220 different types of cells in the embryo including the placenta.Pluriopotent stem cells: These types of cells possess the ability to change into any type of cell in the body like blood, muscle, etc. It is formed at the embryonic stem cell stage.Multipotent stem cells: These stem cells have the ability to change into specialized cell such as forming different organs in the body. It occurs as the pluriopotent cell develops in the embryo.Neuron: As the multipotent cell has the ability to form a specialised cell it gives rise to the heart, lungs, liver, etc. including neurons.

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The complete question is as follows:

Identify the answer choice that correctly orders the types of cells from least to most differentiated.(1 point)

neuron → multipotent stem cells → pluripotent stem cells → totipotent stem cells

totipotent stem cells → multipotent stem cells → pluripotent stem cells → neuron

totipotent stem cells → pluripotent stem cells → multipotent stem cells → neuron

multipotent stem cells → totipotent stem cells → pluripotent stem cells → neuron

In the countercurrent exchange in a fish's gills, the oxygen concentration is always _______ in the water than the blood along the entire pathway of each lamella.

Answers

In the countercurrent exchange in a fish's gills, the oxygen concentration is always higher in the water than the blood along the entire pathway of each lamella.

Fish gills employ a technique known as 'countercurrent oxygen exchange' to optimize the quantity of oxygen that their blood can absorb. They do this by increasing the amount of time their blood is exposed to water with greater oxygen levels, even as the blood absorbs more oxygen.

The term "countercurrent oxygen exchange" refers to the flow of blood through the gills in the opposite direction as the flow of water over the gills. This flow pattern guarantees that when the blood passes through the gills and absorbs oxygen from the water, it comes into contact with more fresh water with a greater oxygen content that may constantly discharge oxygen into the blood. Low-oxygen blood encounters low-oxygen blood when it enters the gill in water.

Low-oxygen blood encounters low-oxygen water when it enters the gills. Because there is more oxygen in water, oxygen may go from water to blood. Similarly, after virtually passing the whole length of the gill, the high-oxygen blood meets new, high-oxygen water, and oxygen continues to move from water to blood.

Hence, the countercurrent exchange in a fish's gills, the oxygen concentration is always higher in the water.

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Explain why the
Hawaiian islands formed in a line. What does the general direction of the
line of islands tell you?​

Answers

For the Hawaiian Islands, the Pacific Plate is continuously moving northwest over the Hawaiian hotspot. This move led to the formation of the Hawaiian Islands.

The Hawaiian Islands are believed to have emerged from such "hot spots". As the plates move, volcanoes stop erupting and new volcanoes form in their place. Over time, the volcano continues to move westward, and he above the hotspot ages compared to one active volcano. Tectonic plates and active volcanoes in the world:

Most active volcanoes are located along or near the boundaries of Earth's moving tectonic plates. Hawaii's volcanoes, on the other hand, occur in the middle of the Pacific plate and are formed by volcanic activity over Hawaii's "hot spots."

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What are the 4 components of health and wellness?

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Nutrition, Exercise, Relaxation, Sleep are the 4 components of health and wellness .

According to the WHO constitution, "health is a condition of full physical, mental, and social well-being and not merely the absence of sickness or incapacity." The significance of this phrase is that it implies that mental health is more than simply the absence of mental illnesses or disabilities.

According to studies on wellness, Americans who take care of themselves and choose healthy lifestyles are healthier, happier, and more productive. They also take fewer sick days and spend less money on healthcare. The social, physical, spiritual, and intellectual aspects of wellness are all interconnected and can influence one another. It is more than just a lack of illness. Including all four dimensions in your plan will enable you to experience life to the fullest.

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Why do you think higher and higher light intensities do not cause an ever increasing rate of CO2 use?

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The pace of photosynthesis will be constrained by other variables once the light intensity is high enough, so it won't continue to increase.

How is the rate of photosynthesis impacted by increased light intensity?

As long as other variables are abundant, photosynthesis will proceed at a faster pace as light intensity rises. Another element will eventually become scarce as the rate rises. The impact of low carbon dioxide concentration is depicted in the graph below.

How does oxygen production depend on light intensity?

More oxygen will be produced by plants during the photosynthesis process in the form of bubbles the more intense the light is. As a result, plants produce more oxygen bubbles when the distance between the light and the plant is reduced.

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How do the anther and filament form the male reproductive structure of a flower?

Answers

An anther releases pollen (male reproductive cells). The anther is supported by the filament. A tube that develops down the mode and into the ovary after pollen contacts the stigma during fertilisation.

What is anther and its function?

Anthers are the term for the male reproductive organs found in flowering plants (also known as angiosperms). Their main job is to produce and protect the developing male gametes of the blooming plant. The anther is internally split into several pollen sacs.

Why are anthers important?

The nectar in the flower is produced by the anthers, which are a component of the male organs. The stamen's anthers, which reside at the tips of filaments and generate pollen, are a component. They must strike people entering the bloom in order to transfer the pollen to the following blossom, hence their positioning is crucial.

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what process causes water to move out of the cell when placed in a hypertonic solution?

Answers

The process that causes water to move out of the cell when placed in a hypertonic solution is called osmosis.

What is hypertonic solution?

A hypertonic solution is a type of solution that contains a higher concentration of solutes compared to another solution. When two solutions with different concentrations of solutes come into contact, the solution with the higher concentration of solutes is said to be hypertonic in relation to the other. Hypertonic solutions can cause cells to shrink due to the movement of water out of the cell, a process known as osmosis.

Osmosis is a type of diffusion, a process where molecules move from an area of high concentration to an area of lower concentration. In osmosis, water molecules move out of the cell in order to balance the salt concentration outside and inside the cell. This movement of water causes the cell to shrink and can even lead to the death of the cell if the solution becomes too concentrated.

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What are the differences between decomposers and detritivores?

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Detritivores are species that consume the organic material that has died or is in the process of decaying by oral intake, whereas decomposers are organisms that break down the organic matter are the differences between decomposers and detritivores.

The distinction is that whereas decomposers "feed" by chemically destroying organic matter, detritivores "feed" on debris particles. Different from other decomposers, detritivores devour the material they decompose. Bacteria and fungi are examples of external decomposers; they do not consume their food.

Decomposers break down organic matter that has decayed and recycles the necessary nutrients back into the soil. The plants eventually absorb these nutrients. Detritivores, on the other hand, eat or swallow the dead body parts of animals and plants.

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What is the example of manifest function in school?

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Example of manifest function in school is education and discipline.

The traditional school system has two intended advantages when it comes to its manifest functions. The first is education, of course; students are there to study and advance their knowledge. The rigidity and structure of the school day serve as a second role, preparing students for a structured lifestyle and the working world.

Other manifest functions are socialization, social control, social placement, culture transmission, fostering social and political integration, and acting as a change agent. Education also acts as a social control mechanism.

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1.What are the three main functions of the cell membrane?

2.What is the difference between a hydrophilic and hydrophobic?

3.How does the structure of the cell membrane help maintain homeostasis?

4.What does the structure of a cell membrane look like

Answers

Answer:

1:a)they keep toxic substances out of the cell

b)they contain receptors and Channells that allow specific molecules to pass between organelles,cells and the outside environment.

c)they separate vital bot incompatible metabolic

processes conducted within organelles

2.hydrophilic ( water loving) and hydrophobic (water fearing)

3.By regulating the materials that may enter and leave the cell.

4.a thin line

Answer:

1. The three main functions of the cell membrane are:

To act as a barrier or boundary between the cell and its environment, controlling the movement of substances in and out of the cell.To maintain the shape and integrity of the cell by providing structural support.To facilitate communication between the cell and its surroundings through various membrane proteins and receptors.

2. Hydrophilic refers to molecules that are attracted to water and can dissolve in it, while hydrophobic refers to molecules that repel water and are not soluble in it.

3. The structure of the cell membrane, which is composed of a phospholipid bilayer with embedded proteins and carbohydrates, allows it to selectively transport molecules and ions in and out of the cell, maintaining a balance of substances and preventing the buildup of harmful substances. The membrane also helps to regulate the cell's internal environment by responding to external signals and changing its permeability accordingly.

4. The structure of the cell membrane can be visualized as a fluid mosaic model, where the phospholipid bilayer acts as a fluid matrix with embedded proteins, carbohydrates, and cholesterol molecules. The hydrophobic tails of the phospholipids face inward, while the hydrophilic heads face outward towards the aqueous environments inside and outside the cell. The membrane also contains various types of proteins that serve different functions, such as transporters, channels, receptors, and enzymes.

Identical twins who were raised in different families were observed to have very different scores on the math SAT test. What would best explain this difference?
a. nurture
b. exercise
c. diet
d. nature

Answers

D took the test got 100

How long will the Brooklyn Bridge last?

Answers

The Brooklyn Bridge, which connects the boroughs of Manhattan and Brooklyn across the East River in New York City, is a hybrid cable-stayed suspension bridge.

What is the location of first Brooklyn Bridge?

The Brooklyn Bridge, which connects the boroughs of Manhattan and Brooklyn, towers majestically over New York City's East River. The Brooklyn Bridge can be walked in how many minutes nearly 60 minutes

The Brooklyn Bridge can be walked in how long? The distance is roughly 1.3 miles (one way). Again, one way, it should take you approximately 60 minutes if you proceed slowly, giving you time to enjoy the scenery and take some pictures. If you go quickly, it will take you 20 to 25 minutes.

Therefore, The Brooklyn Bridge, which connects the boroughs of Manhattan and Brooklyn across the East River in New York City, is a hybrid cable-stayed suspension bridge.

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michael’s family is building a new house. they would like to use electricity generated by renewable resources. which of these power supplies would help the family accomplish its goal?

Answers

Solar power, wind power, geothermal energy, and hydroelectric power are all viable renewable resources that could be used to generate electricity for Michael’s family’s new house.

What is Solar power?

Solar power is a form of renewable energy that is generated through the use of photovoltaic cells to convert sunlight into electricity. Solar power is clean, abundant, and cost-effective, and can be used to power homes, businesses, and public infrastructure. Solar energy is a reliable, cost-effective energy source that can help reduce energy costs, reduce pollution, and create jobs. Solar power is becoming increasingly popular as an alternative energy source due to its many benefits.

Solar power would be the most efficient and cost-effective option in most cases. Wind power could be used in areas with high wind speeds, while geothermal energy can be used to heat and cool the home. Lastly, hydroelectric power can be used to generate electricity from the power of moving water. All of these renewable resources are capable of providing clean, renewable energy for Michael’s family’s new home.

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What is the impact of Keats repetition of the word what in Ode on a Grecian Urn?

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The word "what," which Keats uses several times, has the effect of highlighting the speaker's inquisitive tone. The right response is C.

For the audience, repetition makes the argument more clear. Repeated material has a higher chance of being remembered by the audience. By using the same words or phrases repeatedly, repetition is a literary strategy that helps readers understand and remember a message.

It could be a word, phrase, sentence, or even a line of poetry that is repeated throughout the text to emphasize its importance. This draws attention to the speaker's enigmatic tone. From intrigued to lonely, the voice shifts.

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Complete question: What is the impact of Keats's repetition of the word what?

a It explains the overall theme.

b It makes the poem more formal.

c It emphasizes the curious tone of the speaker.

d It expresses the thoughts of the people on the urn.

Calculate amount of energy received by a person together with the maximum daily rate of carbohydrate. 1)7700 2)3600 3)8000 4)8800

Answers

The maximum daily rate of carbohydrates is 3960 calories.

The closest value is 3600 calories.

Hence, the correct option is option 2.

What is the recommended maximum daily intake of carbohydrates?

According to the Dietary Guidelines for Americans, all age groups and genders should consume 45–65% of their daily calories from carbohydrates.

The Daily Value (DV) for carbohydrates in a 2,000-calorie diet is 300 grams per day, per the Food and Drug Administration (FDA).

Assuming the maximum intake of calories by a person per day is 8800 calories, the maximum daily rate of carbohydrates is determined as follows;

The maximum daily rate of carbohydrates = 45 % * 8800 calories

The maximum daily rate of carbohydrate = 3960 calories

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What are the 4 types of intelligence?

Answers

The four types of Intelligence are:

Intelligence Quotient (IQ)Emotional Quotient (EQ)Social Quotient (SQ)Adversity Quotient (AQ)

Ones IQ is a measure of your understanding. To solve math problems, memories information, and recall lessons, you must have a high IQ. The Emotional Quotient measures your ability to keep peace with others, keep time, be responsible, be honest, behave maturely, and be humble, authentic, and considerate. The Social Quotient is a measure of ones ability to form and maintain a network of friends over time.

The Adversity Quotient is a measure of ones ability to weather adversity and come out the other side unscathed. People with higher EQ as well as SQ tend to be more successful in life than those who have high IQ but low EQ but also SQ. Most schools place a premium on increasing IQ while downplaying EQ and SQ.

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in a recent experiment, anti-bacterial hand sanitizer was compared to hand soap. students washed their hands using the sanitizer or soap and warm water for two minutes; then they dried their hands with a paper towel. the standard of comparison was rubbing hands vigorously for 2 minutes in warm water, without any soap or sanitizer, and then drying with a paper towel. the sanitizer advertisement claimed to kill bacteria more effectively than any soap. after washing, hands were swabbed and then the swab applied to a culture plate and incubated. finally, the bacterial cultures were counted. students using the antibacterial santizer had the lowest bacterial culture count. although the sanitizer performed better than hand soap or no soap, what could students do to further investigate the company's claims concerning the sanitizer? responses

Answers

In a recent experiment, anti-bacterial hand sanitizer was compared to hand soap. Students wash their hands using hand sanitizer or soap and warm water for two minutes; then they dry their hands with paper towels. standard comparison is vigorous hand scrubbing for 2 minutes in warm water, without soap or hand sanitizer, then dry with a tissue. Cleanser ads claim to kill bacteria more effectively than any soap. After washing, the hands are wiped and then the swab is applied to the culture plate and incubated. Finally, the bacterial cultures were counted. students using antibacterial cleansers had the lowest number of bacterial cultures. Although the cleanser works better than hand soap or no soap, students can do to investigate further the company's claims regarding these cleaners is to try the two brands of hand sanitizer or soap and see the results in the laboratory.

Hand washing is an easy and simple way to remove dirt. Washing hands with soap is an effort to prevent the transfer of bacteria from one person to another, either directly or indirectly. Washing your hands will break the chain of disease transmission.

Further investigations that can be carried out by students for more experimental methods with company claims related to these cleaners are to conduct experiments with these two brands. Students can use the pretest design with control group design. Students do a hand swab after washing their hands with hand sanitizer or soap after that see the results in the laboratory. Calculation of the number of bacteria in the Microbiology Laboratory uses the development of the spectrophotometry method to find out which brand of soap produces the lowest colonies.

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Some specialists list as many as _____ different sensory modalities. There are ______ major senses which can then be separated into more specific categories.
A. 17; 5
B. 5; 2
C. 3; 2
D. 7; 19
E. 10; 3

Answers

Some specialists list as many as 17 different sensory modalities. There are 5 major senses which can then be separated into more specific categories.

What are Sensory modalities?

Sensory modalities are the methods by which we receive and interpret sensory information, such as sight, sound, touch, taste, and smell. Sensory modalities allow us to interact with our environment and make sense of the world around us. Other sensory modalities include proprioception (awareness of body position and movement), nociception (ability to feel pain), temperature, and vibration.

The five major senses (sight, hearing, smell, taste, and touch) can be broken down into more specific categories because each of these senses can be broken down into more specific and nuanced sensory experiences. For example, touch can be further divided into pressure, temperature, and pain. Sight can be further divided into color, brightness, and movement. By breaking these senses down into more specific categories, it allows us to better understand and analyze the different sensory experiences that we have.

Hence, Option A is correct.

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What are two methods of treating heart disease?

Answers

People with blocked or restricted arteries have the procedure. Your eligibility for treatment will be determined by a coronary angiography. One kind of coronary artery bypass surgery is called an off-pump coronary artery bypass (OPCAB).

What two methods of treating heart disease?

A low-sodium, low-fat diet that is good for your heart, regular exercise, quitting smoking, and moderate alcohol consumption are just a few examples of lifestyle changes. Medication If lifestyle adjustments are insufficient to control your heart disease, your doctor may prescribe medication.

Therefore, procedure for a coronary artery bypass transplant. When your arteries are blocked, you can get blood to a portion of your heart muscle through bypass surgery.

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colorblindness is an x-linked recessive trait. let us assume that a colorblind man has a colorblind sister and his mother has normal vision. what is the genotype, as to color vision, of this man's mother and of his father? what kind of color vision will his sons and his daughters have, and in what ratios, if he marries a woman identical in genotype to his mother?

Answers

Genotype of his father = [tex]X^cY[/tex]Genotype of his mother = [tex]X^CX^c[/tex]Phenotype ratio of his sons = 50% colorblind, 50% unaffected.Phenotype ratio of his daughters = = 50% carrier, 50% colorblind

X-linked crosses

The colorblind man has a colorblind sister and his mother has normal vision. The sister must have inherited one affected X allele from the father and another from the mother.

This means the mother is a carrier while his father is a colorblind man. Thus (assuming the colorblindness allele is c):

Genotype of father = [tex]X^cY[/tex]Genotype of the mother = [tex]X^CX^c[/tex]

Now, if the colorblind man marries a woman similar to his mother in genotype:

[tex]X^cY[/tex] x [tex]X^CX^c[/tex]

[tex]X^CX^c[/tex], [tex]X^cX^c[/tex], [tex]X^CY[/tex], [tex]X^cY[/tex]

Phenotype ratio of his daughters = 50% carrier vs 50% colorblind

Phenotype ratio of his sons = 50% colorblind, 50% unaffected.

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Why is plant science important?

Answers

People all throughout the world can benefit from plant science's ability to address health issues. In the first place, by applying pesticides to prevent harmful pests from attacking crops with illnesses that could render our food unhealthy

How long has plant science been around?

Our own heritage in plant science begins in the early 20th century with the passing of philanthropist and property developer John Innes of London (1829-1904). Innes' last will and will stipulated that the majority of his fortune be used to construct a museum and art gallery or a school for horticulture teaching.

What is a journal of plant science?

Previously known as Plant Biology Letters, publication in this journal is free and there are no page fees. Plant Science will release its articles as soon as possible.

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PLS HELP ITS EARTH SCIENCE

Landforms can be shaped by different types of weathering. Which of the following occurred because of chemical weathering?

A. Underground rocks react with acidic groundwater and slowly dissolve, forming a cave.
B. a large section of rock is formed into an arch.
C. The rocks found near a river are rounded.
D. Small cracks in a rock get larger during winter.

Answers

Answer:

A

Explanation:

This produces a weak acid, called carbonic acid, that can dissolve rock.

What is the dominant seed color in Mendel's peas green or yellow?

Answers

What colour are the main seeds of Mendel's peas coloured or green

Mendel found that in the pea plant, the yellow pea colour gene predominated the green pea colour allele. Why is this important? The yellow allele in a heterozygous pea-colored person masks the impacts of the green allele. Both heterozygous and homozygous dominant individuals will yield yellow peas. To find a solution in this case, we must use the laws of dominance and segregation. Here, we must first create a cross-over between homozygous recessive and dominant alleles. In the current situation, yellow seeds are dominant and green seeds are recessive.

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What are the 7 different types of external conflict?

Answers

People vs People. also known as "man versus.

Person versus Nature.

Person versus Society

Individual versus technology.

Person versus the supernatural.

Person vs Self

Person vs. Fate, Luck, or God

One character versus another. When two characters have conflicting wants or opinions, it results in this kind of conflict.Character versus. character, character versus nature, & character vs. society are the three subcategories into which literary critics often subdivide external conflict.resources that are at odds. People vs People. also known as "man versus.Person versus Nature.Person versus SocietyIndividual versus technology.Person versus the supernatural.Person vs Self,Person vs. Fate, Luck, or God.To work efficiently, employees must have access to resources like technology, office supplies, and meeting spaces.There are five main conflict management styles, based on the Thomas-Kilmann Conflict Mode Instruments (TKI), which is used by human resource (HR) professionals worldwide: cooperating, competing, avoiding, adapting, and compromising.

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Main idea 2: A dihybrid cross shows the possible genotypes and phenotypes of offspring for two traits from two organisms

Answers

In the dihybrid test cross, there are four genotypes. There are another 4 phenotypes in the dihybrid test cross. Thus, the sum of the genotypes and phenotypes is 4 + 4 = 8.

What kind of offspring does a dihybrid cross produce?

A dihybrid simultaneously explores how two traits are inherited. Monohybrid crossings are simpler than dihybrid crosses. If the genes are unlinked, a cross of two completely heterozygous individuals will result in offspring with a 9:3:3:1 phenotypic ratio.

What is the genotypic ratio of two parents who are heterozygous in a dihybrid cross?

Predictable ratios for genotype and phenotype in the progeny will arise from mating two heterozygous individuals. A 9:3:3:1 phenotypic ratio should arise from crossing heterozygous parents.

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#6 and #7 I dont understand

Answers

According to Chargff's rule adenine always pairs with thymine and guanine with cytosine.

The DNA is made up of two kinds of nitrogen base pairs purines and pyrimidines. Adenine(A) and guanine(G) are purines and thymine(T) and cytosine(C) are pyrimidines. The two nucleotide strands are held together by hydrogen bonds.

Erwin Chargaff in 1949 showed that

Adenine always pairs with thymine and guanine with cytosine.The total number of purine nucleotides is always equal to the total amount of pyrimidine nucleotide A+G=T+C.The proposition of adenine is equal to thymine and so guanine is equal to cytosine. But the [A]+[T] need not necessarily be equal to [G]+[C].

These empirical rules regarding the composition of bases in DNA are collectively called the Chargaffs rule or Base pair rule.

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Which of the following best describes the relationship between a chomosome and a gene? A. Each gene forms its own chromosome B. Each chromosome contains a single gene C. Each gene contains a specific number of chromosomes. D. Each chromosome contains a specific number of genes.

Answers

The following best describes the relationship between a chromosome and a gene: that each chromosome contains a specific number of genes (present in Option D).

What is the presence of a gene on a chromosome?

The chromosomes naturally contain lots of genes, and the number varies from one to another set of chromosomes in the case of humans, each gene has intronic and exonic regions, and the gene exonic regions code for the protein as they contain the message of the protein.

Hence, the following best describes the relationship between a chromosome and a gene: that each chromosome contains a specific number of genes (present in Option D).

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HELP pls will mark you the brainliest

Answers

The nucleotide sequence ACTAAG represents the DNA chain for which the mRNA was transcribed because it is complementary to the target sequence (option a).

What is a nucleotide base complementary target sequence?

A nucleotide base complementary target sequence is any sequence in the DNA chain that contains complementary nucleotide bases, which means that adenine or A always pairs with Thymine or T, while Guanine or G always pairs with Cytocine or C.

Moreover, it is important to highlight that in the resulting mRNA sequence thymine or T bases are replaced by Uracil or U bases.

Therefore, with this data, we can see that a nucleotide base complementary target sequence is composed or A in the case of T or G in the case of C and U is a homolog to T in the messenger or mRNA nucleotide chain sequence of a single strand.

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Hierarchical organization and chemical complexity can be exemplified by the saguaro desert as the ecosystem. provide an example for each of the other six hierarchies leading up to this ecosystem.

Answers

The hierarchies could be: 1) Elements; C, N, O, H, etc., 2) Biomolecules; amino acids, nucleotides, simple sugars, etc., 3) Macromolecules; proteins, carbs, etc., 4) Metabolism; glycolysis, photosynthesis, Calvin Cycle, etc., 5) Cells; plant cells, muscle cells, liver cells, etc., 6) Organisms; saguaro cacti, javelinas, gila monster, etc., and 7) Sonoran desert.

"methotrexate Is A Drug That Inhibits The Production Of The Nitrogenous Base Thymine Within A Cell. Would (2024)

FAQs

How does methotrexate inhibit DNA synthesis? ›

Methotrexate disrupts the synthesis of DNA, RNA, thymidylates, and proteins [34–39] by inhibiting the production of folate. It is cytotoxic during the S-phase of the cell cycle.

Does methotrexate inhibit cell division? ›

Methotrexate inhibits cell division and reduces the amount of inflammation. MTX inhibits aminoimidazolecarboxamidoribonucleotide (AICAR) and thus reduces oxidative stress as well as cytokine production. MTX has also been linked to increased HDL cholesterol and might modify the plaque.

What does methotrexate inhibit? ›

It inhibits enzyme AICAR transformylase, leading to hindrance in adenosine and guanine metabolism, Adenosine accumulation; and due to anti-inflammatory action of adenosine, leads to repression of T-cell activation, down-regulation of B-cells, increasing activated CD-95 T cells sensitivity; and repression of ...

What does methotrexate do to cells? ›

Methotrexate works by destroying quickly dividing cells, such as cancer cells.

How does methotrexate inhibit cell growth? ›

Methotrexate (MTX), a derivative of aminopterin, is a folate analogue that inhibits dihydrofolate reductase, which causes the arrest of rapidly dividing cells in the S-phase of the cell cycle.

What does methotrexate block the synthesis of? ›

Methotrexate is an established anticancer agent employed in the treatment of solid tumors and leukemias and more recently as an immunosuppressive agent. As an anticancer agent, methotrexate inhibits dihydrofolate reductase in the biosynthesis of nucleic acids thereby blocking the synthesis of DNA.

How does methotrexate inhibit purine synthesis? ›

Methotrexate acts by inhibiting dihydrofolate reductase and in other cell systems has been reported to inhibit thymidylate synthesis, purine synthesis or both.

What is the enzyme inhibition of methotrexate? ›

The primary action of methotrexate is inhibition of the enzyme dihydrofolate reductase (DHFR), which converts dihydrofolate to tetrahydrofolate (THF)[112].

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