Multiple Choice
A glucose molecule is to starch as __________.
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2. Cell Chemistry & Cell Components
Nucleic Acids
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Which of the following are pyrimidines found in the nucleic acid DNA?
A
Adenine and guanine
B
Thymine and adenine
C
Uracil and guanine
D
Guanine and cytosine
E
Thymine and cytosine
Verified step by step guidance1
Understand the structure of nucleic acids: DNA is composed of nucleotides, each containing a sugar, a phosphate group, and a nitrogenous base.
Identify the two types of nitrogenous bases: Purines and pyrimidines. Purines include adenine (A) and guanine (G), while pyrimidines include cytosine (C), thymine (T), and uracil (U).
Recall that DNA contains the bases adenine, guanine, cytosine, and thymine. Uracil is found in RNA, not DNA.
Determine which bases are pyrimidines: In DNA, the pyrimidines are cytosine (C) and thymine (T).
Match the correct pair of pyrimidines with the options provided: The correct answer is 'Thymine and cytosine' as they are the pyrimidines found in DNA.
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