Answered

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What are the component parts of a single DNA nucleotide?

A. two C's, two A's, a G and a T
B. a pentose sugar, a phosphate group, and a base
C. ribose and deoxyribose
D. A, G, C, and T

Sagot :

GinnyAnswer
To understand the component parts of a single DNA nucleotide, let's break down the structure of a DNA nucleotide step-by-step:

1. Pentose Sugar: This is a sugar molecule that has five carbon atoms. In the case of DNA, the sugar is deoxyribose.

2. Phosphate Group: This is a phosphorus atom bonded to four oxygen atoms. The phosphate group forms the backbone of the DNA structure, linking together the pentose sugars of neighboring nucleotides.

3. Nitrogenous Base: This is a nitrogen-containing molecule that has the properties of a base. There are four types of nitrogenous bases in DNA: adenine (A), guanine (G), cytosine (C), and thymine (T).

Given these details, the correct components of a single DNA nucleotide are a pentose sugar, a phosphate group, and a base.

Thus, the correct answer is:
- a pentose sugar, a phosphate group and a base
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