AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

How do we describe two bases that fit together like puzzle pieces such as C and G?

A	opposite
B	complementary
C	copies
D	nucleotides

Explanation:

Detailed explanation-1: -The two strands are held together by hydrogen bonds between pairs of bases: adenine pairs with thymine, and cytosine pairs with guanine.

Detailed explanation-2: -There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).

Detailed explanation-3: -Listen to pronunciation. (bays payr) Two nitrogen-containing bases (or nucleotides) that pair together to form the structure of DNA.

Detailed explanation-4: -The bases can be divided into two categories: Thymine and cytosine are called pyrimidines, and adenine and guanine are called purines.

Detailed explanation-5: -Figure 9.8 The two strands of DNA are complementary, meaning the sequence of bases in one strand can be used to create the correct sequence of bases in the other strand. Because of the complementarity of the two strands, having one strand means that it is possible to recreate the other strand.

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