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Reika [66]
3 years ago
8

Can molecules be made of one or more particles?

Biology
1 answer:
Tasya [4]3 years ago
4 0

A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. ... The oxygen molecules are bonded or stuck together.

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boyakko [2]

Answer:

d

Explanation:

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4 0
3 years ago
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Does the distribution of bases in sea urchin DNA and salmon DNA follow Chargaff’s rules? a) Yes, because the %A approximately eq
MArishka [77]

Answer:

A. Yes, because the %A approximately equals the %T and the %G approximately equals the %C in both species.

Explanation:

According to Chargaff's rule, in all cellular DNAs, the number of adenosine residues (A) is equal to the number of thymidine residues (T). And the number of guanosine residues (G) is equal to the number of cytidine residues (C). Therefore, the sum of the purine residues equals the sum of the pyrimidine residues (A+ G= C+ T). It is based on the fact that a purine base always pairs with a pyrimidine base in a double helix DNA.

Chargaff’s rule is followed in all the double-helical DNA molecules irrespective of the species. In DNAs of sea urchin and salmon, the percentage of adenine is equal to that of the thymine and the percentage of guanine is equal to that of the cytosine. Therefore, Chargaff's rule is followed.

3 0
3 years ago
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matrenka [14]
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6 0
3 years ago
An individual of the genotype “Aa” mates with an individual of the genotype “Aa”. What is the probability that their first two o
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Explanation:

Because their are 4 possible genotypes for the offsprings

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7 0
2 years ago
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Which of the following statements about migration is true?
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Answer:

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8 0
3 years ago
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