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bija089 [108]
2 years ago
12

The diagram shows a model of a section of double-stranded DNA. The straight lines and dotted lines represent chemical bonds betw

een the components of the molecule.
During DNA replication, which chemical bonds break apart? Select all that apply

Biology
1 answer:
borishaifa [10]2 years ago
8 0

Answer:

Select both of the dotted lines that have boxes not the solid lines.

Explanation:

It asks which CHEMICAL bonds break apart and the dotted lines are hydrogen bonds the rest are not.

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An organism's genome is analyzed and found to contain 18% guanine. What percentage of that organism's DNA is adenine?
Oxana [17]

Answer:

32%

Explanation:

According to Chargaff in his complementary base pairing rule, he stated that the proportion of purine and pyrimidine bases is equal to 100%

That is, A + T + G + C = 100%

Where A=T and G=C i.e the proportion of each base pair is equal.

Hence, if the Guanine content is 18%, it means the Cytosine content of that DNA molecule must also be 18%. Therefore:

18 + 18 + A + T = 100

A + T = 100 - 36

A + T = 64

If the sum proportion of Adenine and Thymine is 64% and each must contain equal proportions, A or T = 64/2 = 32

Hence, Adenine contains 32%, likewise Thymine.

6 0
3 years ago
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DIA [1.3K]

Answer:

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Explanation:

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2 years ago
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Vera_Pavlovna [14]

Answer:

D. realize that lethargy in an infant is always an ominous neurological sign and immediately assess him.

Explanation:

Lethargy in infants can be seen in several ways. one of this is that the child may be sluggish and as if he or she has little or no energy. the child may find it difficult to be awake for feeding. And can lose alertness and pays less attention to sounds and the baby is always drowsy. The registered nurse has to assess this baby immediately because lethargy could happen because the baby may have an infection or probably have low blood sugar. Therefore the last option is the best option for the nurse to take.

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2 years ago
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C. <em>A process of change in organisms over a period of time</em>

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8 0
3 years ago
A garden has 80 pea plants. Of this total, 20 plants have short stems and 60 plants have tall stems. What percentage of the plan
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16 percent of the plants have short stems.
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2 years ago
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