Test Bank for Biochemistry, 8e by Jeremy Berg

Test Bank for Biochemistry, 8e by Jeremy Berg (All Chapters)

Chapter 1 Biochemistry: An Evolving Science

Multiple-Choice Questions 1) DNA is made from the building blocks adenine, guanine, cytosine and _____.

• uridine
• thymine
• inosine
• ribose
• None of the answers is correct.

Answer: B

Section: 1.2

2) The DNA backbone is made from repeating _____.

• monosaccharide units
• amino acid units
• sugar-phosphate units
• fatty acid
• None of the answers is correct.

Answer: C

Section: 1.2

3) The number of hydrogen bonds formed between A and T is _____.

• 1
• 2
• 3
• 4
• 2 if in DNA, 3 if in RNA
• / 4

Answer: B

Section: 1.2

4) The number of hydrogen bonds formed between G and C is _____.

• 1
• 2
• 3
• 4
• 2 if in RNA, 3 if in DNA

Answer: C

Section: 1.2

5) The fundamental groups of organisms include Eukarya, Bacteria, and _____.

• Plantae
• Animalia
• Protista
• Archaea
• Fungi

Answer: D

Section: 1.1

6) Which of the following are the strongest bonds in molecules?

• covalent bonds
• ionic bonds
• hydrogen bonds
• metallic bonds
• None of the answers is correct.

Answer: A

Section: 1.1

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7) Which of the following describes the relationship between the strengths of hydrogen and covalent bonds?

• Hydrogen bonds are always stronger than covalent bonds.
• Hydrogen bonds and covalent bonds have equivalent strength.
• Hydrogen bonds are always weaker than covalent bonds.
• With a few exceptions, most hydrogen bonds are stronger than covalent bonds.
• With a few exceptions, most covalent bonds are stronger than hydrogen bonds.

Answer: C

Section: 1.3

8) The matter within a defined region of space is referred to as the _____.

• universe
• system
• outer space
• wormhole
• None of the answers is correct.

Answer: B

Section: 1.3

9) For a spontaneous reaction, the G must be _____.

• positive
• negative
• greater than 1
• between 1 and 0
• 0

Answer: B

Section: 1.3

10) The term _____ is used to indicate Gibbs free energy.

A) H 3 / 4

B) E

C) S

D) G

E) T

Answer: D

Section: 1.3

11) Which of the following is considered a metabolite, a substance that is chemically transformed in a biochemical process?

• deoxyribonucleic acid
• glycerol
• protein
• ribonucleic acid
• polysaccharide

Ans: B

Section: 1.1

12) The structure of DNA described by Watson and Crick included

• a double helix.
• the sugar phosphate backbone aligned in the center of the helix.
• the base pairs that are stacked on the inside of the double helix.
• both a double helix and the sugar phosphate backbone aligned in the center of the helix
• a double helix and the base pairs that are stacked on the inside of the double helix

Ans: E

Section: 1.2

13) What did Watson and Crick suggest to be significant about the base pairing found in the helix?

• It allowed the DNA to twist in a helix.
• The DNA could be circular.
• It was a mechanism for copying.
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