Multiple Choice
In the structure of DNA, which nitrogenous base forms complementary hydrogen bonds with thymine?
3
views
7. DNA and Chromosome Structure
DNA Structure
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following lists correctly identifies the four nitrogenous bases found in DNA?
A
Adenine, Thymine, Guanine, Lysine
B
Adenine, Thymine, Guanine, Cytosine
C
Adenine, Uracil, Guanine, Cytosine
D
Adenine, Thymine, Guanine, Uracil
Verified step by step guidance1
Step 1: Understand that DNA is composed of four nitrogenous bases which pair specifically to form the rungs of the DNA double helix.
Step 2: Recall the four nitrogenous bases found in DNA: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C).
Step 3: Recognize that Uracil (U) is found in RNA, not DNA, so any list containing Uracil is incorrect for DNA bases.
Step 4: Identify that Lysine is an amino acid, not a nitrogenous base, so any list containing Lysine is incorrect.
Step 5: Conclude that the correct list of DNA nitrogenous bases is Adenine, Thymine, Guanine, and Cytosine.
Related Videos
Related Practice
