a strand of dna contains 10% adenine. what percentage of cytosine must be present in this strand of dna then?

a) 80%
b) 40%
c) 10%
d) 20%

Answers

Answer 1

Answer:

[tex]\boxed {\boxed {\sf B. \ 40 \% \ cytosine}}[/tex]

Explanation:

First, recall the base pairs in DNA:

Adenine and Thymine Cytosine and Guanine

We know this strand of DNA has 10% adenine. Since A and T pair, there must also be 10% guanine.

So, A and T make up 20% of the DNA strand.

That leaves 80% for cytosine and guanine. They are pairs, so they share this percentage equally.

80/2 =40

There must be 40% cytosine and 40% guanine.

The strand of DNA has 40% cytosine


Related Questions

what a nucleotide is

Answers

Answer:

they are organic molecules consisting of a nucleoside and a phosphate

Explanation:

Answer: A nucleotide is an organic molecule that is the building block of DNA and RNA. The nucleotide also have functions related to cell signaling, metabolism, and enzyme reactions

Explanation:

Please hurry i need help.
What process ensures that the normal number of chromosomes is restored after each cell division? During what part of the cell cycle does this occur?

Answers

Answer:reproduction

Explanation: when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring. Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.

New York's Tug Hill landscape region is classified as a plateau because this region has a

Answers

Answer:

high elevation with nearly horizontal layers of  bedrock

Explanation:

A plateau is a an area of relatively high ground.

What is the most likely cause of tuberculosis?

A. It is caused by taking a certain drug

B. It is caused by poor nutrition

C. It is caused by a type of bacteria

D. It is caused by a type of virus

Answers

Answer:

I think the answer is C but aia could be wrong

Explanation:

brainliest plz

What could have caused the cave to form?

Answers

Answer:

Most caves are created when slowly-moving water dissolves, or eats away at limestone rock, creating spaces, caverns, and tunnel-like passages. ... The waters that made Wind Cave probably sat in the limestone for long periods of time. Water did not flow through the cave like a river.

sorry if I am wrong

The answer is Dissolved carbon dioxide

Which best details the movement of energy
through aerobic cellular respiration?

Answers

Answer:

Heat energy is absorbed as chemical potential energy is transferred from oxygen molecules to ATP molecules. Heat energy is released as chemical potential energy is transferred from oxygen molecules to ATP molecules.

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Which structures are part of the appendicular skeleton?
Choose 1 answer:
A
The upper arm (humerus)
в)
The spine (vertebral column)
The ribcage (thoracic cage)
D
The skull (cranium)

Answers

It is the rib cage (thoracic cage)

Answer:

The upper arm (humerus)

Explanation:

PLEASE HELP ME
A portion of a nucleic acid sequence is shown below.
Which term best describes this nucleic acid?
AGC TAT GCC AAA

Answers

Is a DNA strand it pair with TCG ATA CGG TTT

The study of the gene is called genetics. Genes are always present in pair form.

The correct answer is DNA.

What is DNA?The DNA stands for deoxyribose nucleic acid.it stores all the genetic information and helps in the regulation of the formation of protein and hormones.

In DNA, Adenine binds to the thymine and uracil in RNA.

In the question, it has the thymine nitrogenous base.

Hence, we can say that nucleic acid is DNA.

For more information about the DNA, refer to the link:-

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__ traps contaminants from runoff
water practicing conversation tillage
helps prevent __.

Answers

Answer: The method that helps control pollution at source is Practicing conservation tillage helps prevent. This is to help conserve water and prevent water pollution.

Explanation:pollution

Explain why diet especially energy intake should be related to age, sex and activity of an individual

Answers

Hey there ..

Here is your answer ..

I hope it will help you ..

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Please I need as much help as possible as quick as possible!How would you compare a plant cell to earth?

Answers

you could say the core of the earth is equal to the nucleus of the cell and the outer layer of the earth is like the cell wall

.
Explain how the respiratory system and circulatory system work together.
.
Explain how the circulatory system and the muscle system work together.

Answers

Answer:

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.

16. 1) Which of these is not needed by living organisms?
A. space
B. gravity
C. air
D. water
E. energy

Answers

Answer:

A. Space

Explanation:

You need gravity to stay on the planet and not drift off.

You need air to keep you alive.

You need water to keep you alive.

You need energy to do things like walk around, use your brain, etc.

Answer:

Space

Explanation:

Living organisms need air, water, energy. Gravity is technically also needed since all living organisms on earth are accustomed to it.

what does federal law require of employers in regard to the hospital B vaccine

Answers

Answer:

Health care workers who work with blood or other bodily secretions which may carry the HBV virus must receive a free HBV vaccination.

^ basically what they said

what biotic factors in the taiga are different from the biotic factors in the rainforest

Answers

Answer:

flora and fauna and also some types of invasive species

True or false
The amounts of salt in ocean water is the same everywhere on earth?

Answers

Answer:

False

Explanation:

Different areas and seas have higher or lower salt levels


[tex]2 \frac{1}{3} + 3 \frac{5}{7} [/tex]

Answers

6 for the top in the middle 5 down is 10
PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG

A baseball player hits a baseball a distance of 75m in 5s. The baseball travels toward the east. Calculate the baseball's velocity.

Your Answer:

Answers

Answer:

15 m/s

Explanation:

75m/s/5 is 15ms

I NEED HELP WITH THESE QUESTIoNS PLEASE HELP ME all answers i need thx

1. What is a nucleotide? How are nucleotides held together in DNA?


2. What is DNA replication? When and where does it occur?


3. Explain the steps of DNA replication, including the enzymes used?


4. What does the base pair rule state?


5. What is RNA?


6. What are three differences between DNA and RNA?


7. What are the three types of RNA?


8. What is transcription? Explain the process, including the ending product.


9. What is a codon? How do you read them?


10. What is translation? Explain the process, including the end product.


11. Explain the role of mRNA, rRNA and tRNA in translation.


12. What is a mutation?


13. How are mutations caused?


14. What are the difference types of mutations?


15. What are some effects of mutations?


16. What is cancer?

Answers

Answer:

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1. Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide. This produces an alternating backbone of sugar - phosphate - sugar - phosphate all along the polynucleotide chain.

2. DNA replication is one of the most basic processes that occurs within a cell. Each time a cell divides, the two resulting daughter cells must contain exactly the same genetic information, or DNA, as the parent cell. To accomplish this, each strand of existing DNA acts as a template for replication.

3. Enzymes that participate in the eukaryotic DNA replication process include: DNA helicase - unwinds and separates double stranded DNA as it moves along the DNA. It forms the replication fork by breaking hydrogen bonds between nucleotide pairs in DNA. DNA primase - a type of RNA polymerase that generates RNA primers.

4. Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

5. RNA plays a central role in turning genetic information into your body's proteins. This remarkable molecule also carries the genetic instructions for many viruses, and it may have helped life get its start.

6. the three main structural differences between RNA and DNA are as follows: RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.

7. Of the many types of RNA, the three most well-known and most commonly studied are messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA), which are present in all organisms.

8. Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.

9. A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids.

10. Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.

11. Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein.

12. A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.

13. A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

14. There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

15. By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.

16. Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer is the second-leading cause of death in the world.

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SpongeBob and his pal Patrick love to go jellyfishing at Jellyfish Fields! The fields are home to a special type of green jellyfish known as Goobers and only really great jellyfishermen are lucky enough to catch some on every trip. Many of the jellyfish are yellow (BB) or blue (bb), but some end up green as a result of incomplete dominance. What would happen if SpongeBob and Patrick crossed two "goobers” or green jellyfish? Complete the Punnett square to help you determine the probability for each color of jellyfish. What percentage would be "goobers" (green)? 0% 25% 50% 100%​

Answers

The  Punnett square to help you determine the probability for each color of jellyfish percentage would be "goobers" are 50%.

What is the goobers?

Goobers is a slang term used to refer to someone who is naive or foolish. It can be used to describe a person who is easily taken advantage of or someone who is generally inept. Goobers are often seen as endearing and often have an innocent quality about them. They are also often seen as lacking in common sense and understanding of the world around them.

BB BB BB BB

bb bb bb bb

To learn more about goobers

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Need help ASAP
Thanks+ BRAINLIST only for correct answers it’s due in 10 mins I really need help

1.what is the order if visible light in increasing energy?
-violet, indigo, blue, green, yellow, orange, red
-red, orange, yellow, green, blue, indigo, violet

2.visible light is a mixture of
-refraction and reflection
-atoms and molecules
-many colors
-ultra violet and non violet rays

Answers

1- option 2
2- option 1

1. -violet, indigo, blue, green, yellow, orange, red

2. -refraction and reflection

Materials and waste that are removed from a cell with the use of a vesicle is called ?

Answers

Answer:

Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell. ... Carbon dioxide and water are removed from these cells via exocytosis.

Explanation:

Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell. ... Carbon dioxide and water are removed from these cells via exocytosis.

How can humanity decrease the amount of carbon in the atmosphere

Answers

Answer:

Reducing our carbon footprint. For example, instead of using a car, that releases gas from fossil fuels, to go to work, ride a bike instead to reduce emissions from fossil fuels.

Explanation:

Reducing carbon footprint

The rate at which waste are produced by cell depends on what

Answers

Cells volume is the answer

Extreme pressure and temperatures can change sedimentary rock into _____.

Answers

Answer:

Metamorphic rock

Explanation:

When a sedimentary rock goes deep underground, it experiences heat and pressure. This distorts the rock and turns it into a metamorphic rock

What type of molecule is used to cut genes from a DNA of an organism

Answers

Answer:

It is restriction enzymes

Explanation:

Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.

Answers

Answer: On the Y chromosome

Answer: 21th

Explanation: Down syndrome a.k.a trisomy 21 because it’s caused by an extra copy of a chromosome 21.

Hope easy and helps! ^^

Which of these are components of a nucleotide? * 1 point Deoxyribose sugar Carboxyl group Nitrogenous base Phosphate group all of these are part of a nucleotide

Answers

Answer:

components of nucleotide is  Sugar, phosphate, nitrogen

Explanation:

Which always contains carbon, hydrogen and oxygen?


I. Carbohydrate


II. Protein


III. Fat


A. I and II only


B. I and III only


C. II and III only


D. I, II and III

Answers

Answer:

Carbohydrates are organic compounds that contain only carbon, hydrogen, and oxygen. They are the most common of the four major types of organic compounds. There are thousands of different carbohydrates, but they all consist of one or more smaller units called monosaccharides.

why blood flow in a leg vein is slow when there is lack of movement?​

Answers

Answer:

Lack of movement allows blood to circulate in a vein very slowly by sitting still for long periods of time. Slow-flowing blood is more likely to clot than normal-flowing blood. This issue is referred to as deep vein thrombosis (DVT). In DVT, as seen in the diagram, the clot normally takes place in a leg vein.

Explanation:

Lack of movement by still for long periods of time makes blood flow very slowly in a vein it is because the blood that flows slowly is more likely to clot than blood that flows normally.

What are the veins called in the leg?

Large leg veins are saphenous veins. The leg veins that become weak in the most people age are the superficial veins and perforator veins.

The superficial and undesirable visible branches are known as varicose, reticular, and spider veins.

When sitting still, the flow of blood flow becomes slow, it is caused because the blood that flows slowly is more likely to clot than blood that flows normally.

This condition is called deep vein thrombosis.

Thus, due to this condition, blood flow in a leg vein is slow when there is lack of movement.

For more details regarding deep vein thrombosis, visit:

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