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3 years ago

A strand of DNA contains 10% Guanine, what percent is Adeninc?

Biology

1 answer:

Wittaler [7]3 years ago

5 0

Answer:

40% is Adenine.

Explanation:

In DNA, Guanine pairs with Cytosine and Adenine pairs with Thymine.

If a strand of DNA contains 10% Guanine, that means that it also contains 10% Cytosine.

10% G + 10% C = 20%

100% - 20% = 80% (Adenine and Thymine)

80% ÷ 2 = 40%

The strand of DNA contains 10% Guanine, 10% Cytosine, 40% Adenine, and 40% Thymine.

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How is DNA changed to make a Genetically Modified organism.

strojnjashka [21]

Answer:

GM is a technology that involves inserting DNA into the genome of an organism. To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. The seeds produced by these plants will inherit the new DNA.

Explanation:

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2 years ago

List three reasons why plants and animals are valuable to the local economy. How could the endangered species act help or hurt a

katrin [286]

Answer:

Plants are valuable since they provide our food, materials for shelter, and purify the air (photosynthesis).

Animals such like livestock, supply us with food, fiber and leather.

The Endangered species act can help a local economy because it helps to supply clean air and pure water. It also protects our natural supplies.

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3 years ago

What are the levels of ecology, from the smallest level to largest level?

Vadim26 [7]

Answer:

The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.

Explanation:

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3 years ago

Explain the role of a hypothesis in a scientific investigation.

k0ka [10]

Answer:

A hypothesis is a testable proposition

used to explain scientific phenomena. It

may be based on previous observations

(a sort of educated guess) or it may

simply be a hunch. Most scientific

hypotheses are combinations of

observation and intuition. The important

thing is that the hypothesis be testable.

If the hypothesis is disproved through

testing, then it is discarded and a new

hypothesis is proposed. If the hypothesis

stands up to rigorous testing, then our

faith in the hypothesis is increased.

This system of careful, rigorous, and

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Hope it helps!

4 0

3 years ago

An individual with the disorder Xeroderma pigmentosum is hypersensitive to sunlight succumbs to DNA damage caused by light expos

Svetlanka [38]

Answer:

Mutations of enzymes involved in nucleotide excision repair.

Explanation:

Xeroderma pigmentosum is a genetic disorder and the person suffering from this disorder is sensitive to ultraviolet light due to the disability of the enzymes involved in nucleotide excision repair which prevents DNA damage caused by ultraviolet light.
Thus, the individuals are sensitive to the exposure of UV and suffer severe problems when exposed to sunlight.
The major cause of the disorder is the inability to repair DNA damage caused by exposure to sunlight due to the mutation in an enzyme involved in nucleotide excision repair.
Nucleotide excision repair is a DNA repair process that can excise out single-stranded DNA that is damaged by UV.
UV exposure leads to the addition of bulky adducts in the DNA known as thymine dimers. The enzymes of NER are involved in the removal of these adducts by excising out a segment of DNA that contains such lesions.
However, in the case of XP, the mutations make this repair system non-functional or partially functional and thus, the individual becomes highly sensitive to UV exposure.

8 0

3 years ago