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Vika [28.1K]
3 years ago
9

Living organisms contain many complicated molecules. Which of these is a reason that carbon is important in these molecules? A.

a carbon atom can form a bond with only one other carbon atom. B. carbon bonds with the lightest and smallest element. C. a carbon atom can form only one bond at a time with another atom D. carbon forms both single and and double bonds
Biology
1 answer:
Alex17521 [72]3 years ago
7 0
D....carbon can also form triple and quadruple bonds
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. What is the ratio of C, H, and 0 atoms in carbohydrates? O1:2:1 O1:6:1 O1:3:T O2:3:2​
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The proportions of the bases are consistent within a species; however they do vary between species. Using the base-pair rules, c
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Answer:

The correct answer would be:

                  A         G          C         T

Human:   31          19          19       31

Cow:         28         22      22         28

Salmon:     29       21       21         29

Wheat        27      23        23        27

Yeast         31         19       19         31

Explanation:

According to the rule of Chargaff which states or explains the amount of the A, T, G, and C bases in the DNA molecule. It says that the DNA of any organism should have a pyrimidine and purine ratio of 1:1. This means the amount of A would be equal to T and the amount G should be equal to the amount of C.

It also says that the amount of a and G would be equal to the amount of C and T. So on the base of this we can find the missing value in the table:

                    A         G          C         T

Human:   31          19          19       31   (A= T and G=C)

Cow:         28         22      22         28  (A= T and G=C)

Salmon:     29       21       21         29   (A= T and G=C)

Wheat        27      23        23        27 (100 - A+T = G+C)

Yeast         31         19       19         31 (A= T and G=C)

5 0
2 years ago
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