Question 1

Which of the following nitrogen bases is found only in RNA and not in DNA?

Accepted Answer

Uracil (U)

Question 2

Which nitrogen base is a purine and pairs with cytosine in both DNA and RNA?

Accepted Answer

Guanine (G)

Question 3

In a DNA molecule, which base pairing is correct according to the table?

Accepted Answer

Cytosine (C) pairs with Guanine (G)

Question 4

Which of the following statements is TRUE based on the table?

Accepted Answer

Adenine (A) pairs with Thymine (T) in DNA

Question 5

Which nitrogen base is a pyrimidine and found only in DNA?

Accepted Answer

Thymine (T)

Question 6

If a DNA sample contains 30% adenine, what percentage of thymine would you expect to find?

Accepted Answer

$$30\%$$

Question 7

Which base pairing is unique to RNA and does not occur in DNA?

Accepted Answer

Adenine (A) with Uracil (U)

Question 8

Which of the following is a correct statement about purines and pyrimidines?

Accepted Answer

Pyrimidines include thymine (T), cytosine (C), and uracil (U)

Question 9

Which nitrogen base is found in both DNA and RNA and pairs with guanine?

Accepted Answer

Cytosine (C)

Question 10

A mutation replaces a thymine (T) with a uracil (U) in a DNA molecule. What is the most likely consequence?

Accepted Answer

The DNA may be recognized as damaged and repaired

Genetics: Structure, Function, and Variation of Genetic Material

Study Guide - Practice Questions