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3 years ago

Chargaff's analysis of the relative base composition of DNA was significant because he was able to show that

Biology

1 answer:

ArbitrLikvidat [17]3 years ago

3 0

Answer:

C) The amount of A is always equivalent to T, and C to G

Explanation:

Chargaff's rule was given by the Austrian chemist, Erwin Chargaff in late 1940s. It explains the composition of the four bases i.e. Adenine(A), Guanine(G), Thymine(T) and Cytosine(C) in a DNA molecule. According to it, purine and pyrimidine bases are always found in 1:1 ratio in a DNA molecule. A and G are purine and T and C are pyrimidine bases and a purine always forms a pair with pyrimidine base hence the amount of A will always be equal to T and amount of G will always be equal to C. This rule forms the basis for the Watson and Crick pairs in DNA double helix model.

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saveliy_v [14]

Answer:

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What is homeostasis... Be discriptive

Semenov [28]

(I got this from my handbook dictionary)
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3 years ago

The process of cellular respiration can be represented by the chemical formula

Mandarinka [93]

Answer:

Explanation:

The correct formula for cellular respiration is:

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3 years ago

Diagnose: Mrs. Harris is a 60 year old white woman. She has noticed in recent years that her height has slightly decreased. Rece

Brut [27]

Answer:

Q: Which skeletal system disorder might she be suffering from?

A: Osteoporosis

Q: What techniques could be used to diagnose her condition?

A: Bone mineral density (BMD) test or dual energy X-ray absorptiometry (DXA) scan

Q: What treatments are available?

A: Medication, healthy food.

Explanation:

The vertebral discs between vertebrae could shrink with age. Therefore, a height loss up to 1-inch is normal. However, if the height loss is more then it is possibly due to osteoporosis.

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A person who is already suffering from osteoporosis should be treated with medicine right away so that it stops further deterioration of the bones and avoid any future bone fractures. Further, it can be handled by eating a healthy diet and supplements such as vitamins D. In case some of the bones/vertebrae are already fractured, surgical approaches might be necessary.

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3 years ago

Which statement is true about prokaryotic cells?

Mashutka [201]

Answer:

It’s A

Explanation:

Itw a because it does contain a nucleus

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3 years ago