Which of the following is not a base of RNA?
A. Thymine (T)
B. Adenine (A)
C. Cytosine (C)
D. Guanine (G)
Answer:A
Which of the following is not a base of RNA?
A. Thymine (T) B. Adenine (A) C. Cytosine (C) D. Guanine (G)
Explanation: RNA structures can be described at three levels as in proteins: primary, secondary, and tertiary. The primary structure is the linear sequence of RNA, consisting of four bases, adenine (A), cytosine (C), guanine (G), and uracil (U).