AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which base can pair with two other nitrogen bases?
A
Adenine
B
uracil
C
Cytosine
D
Thymine
Explanation: 

Detailed explanation-1: -Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together.

Detailed explanation-2: -The nitrogenous bases may form hydrogen bonds according to complementary base pairing: Adenine always forms two hydrogen bonds with thymine / uracil. Guanine always forms three hydrogen bonds with cytosine.

Detailed explanation-3: -Definition. A unit of two bases in a molecule of DNA or RNA. In DNA, adenine always pairs with thymine (A-T), and guanine always pairs with cytosine (G-C).

Detailed explanation-4: -In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.

Detailed explanation-5: -Nitrogenous bases present in the DNA can be grouped into two categories: purines (Adenine (A) and Guanine (G)), and pyrimidine (Cytosine (C) and Thymine (T)).

There is 1 question to complete.