Question 1

Which of the following is NOT a required property of a molecule serving as genetic material?

Accepted Answer

The ability to directly influence the development of traits

Question 2

Which of the following is NOT a key property of hereditary material?

Accepted Answer

It must be able to adapt itself to each of the body's tissues

Question 3

Which of the following pairs are purines?

Accepted Answer

Adenine and guanine

Question 4

Which of the following is an example of a nucleobase?

Accepted Answer

Adenine

Question 5

How many phosphate atoms are present in each subunit of single-stranded DNA?

Accepted Answer

1

Question 6

A nucleic acid was analyzed and found to contain 32% A, 25% C, 21% G, and 22% T. This sample most likely came from:

Accepted Answer

Single-stranded DNA

Question 7

Which of the following does NOT describe a bond found in a DNA double helix?

Accepted Answer

Peptide

Question 8

DNA is a polymer of what subunit?

Accepted Answer

Nucleotides

Question 9

Which carbon of deoxyribose is attached to the phosphate group in a DNA nucleotide?

Accepted Answer

5'-carbon

Question 10

If the percentage of adenine in a sample of double-stranded DNA is 21%, what is the percent of cytosine in that DNA?

Accepted Answer

$$29\%$$

Question 11

Which of the following base pairing rules is NOT consistent with Erwin Chargaff's findings?

Accepted Answer

$$(C + G) = (A + T)$$

Question 12

What is the complementary DNA sequence to 5'-AGTCGACCT-3'? Start with the 5' end and only enter the letters of the bases.

Accepted Answer

AGGTCGACT

Question 13

Which of the following is a pyrimidine found in DNA?

Accepted Answer

Thymine

Question 14

Which of the following statements about the structure of DNA is correct?

Accepted Answer

DNA is typically double-stranded and contains thymine

Question 15

Which bond is responsible for holding the two strands of the DNA double helix together?

Accepted Answer

Hydrogen bond

Question 16

Which of the following best describes the backbone of a DNA molecule?

Accepted Answer

Alternating sugar and phosphate units

Question 17

A mutation changes a cytosine to a thymine in a DNA sequence. Which type of bond is directly affected by this change?

Accepted Answer

Hydrogen bond

Question 18

Which of the following is NOT a component of a DNA nucleotide?

Accepted Answer

Amino acid

Question 19

Which of the following is true regarding the directionality of DNA strands?

Accepted Answer

One strand runs 5' to 3', the other runs 3' to 5'

Question 20

Which of the following best explains why DNA can serve as a template for its own replication?

Accepted Answer

The sequence of bases on one strand determines the sequence on the other via complementary base pairing

Fundamentals of DNA Structure and Genetic Material: Study Notes

Study Guide - Practice Questions