Principles of Biochemistry 5th Edition – Complete Test Bank by Moran, Horton, Scrimgeour & Perry (All Chapters Included)

TEST BANK
All Chapters Included



Principles Of Biochemistry

4th Edition

,Chapter 1 Introduction to Biochemistry

Horton: Principles Of Biochemistry 4th Edition Test Bank

1) Wohler showed that a chemical found only in living organisms can be made
from inorganic substances when he synthesized .
A) Ammonium cyanate
B) Amino acids
C) Urea
D) Uric
acid
Answer: C
Page Ref: Section 1-1

2) The lock-and-key theory described the action of
A) enzymes as keys that fit different chemicals.
B) substrates as keys that fit different enzymes.
C) enzymes as locks that fit other enzymes.
D) substrates as locks that fit different
enzymes. Answer: B
Page Ref: Section 1-1

3) According to Crick's Central Dogma of molecular Biology, there can be NO
transfer of information from
A) DNA to RNA.
B) RNA to RNA.
C) RNA to protein.
D) protein to
RNA. Answer: D
Page Ref: Section 1-1

4) What is the correct order in which these key breakthroughs in biochemistry
occurred?
I. Watson and Crick DNA structure
II. Crick Central dogma
III. Avery, MacLeod and McCarty DNA work on Streptococcus
IV. Widespread use of computers
A) I, II, III, IV
B) III, I, II, IV
C) II, I, III, IV
D) IV, III, I, II
Answer: B

,Page Ref: Section 1-1

, 5) Which elements account for more than 97% of the weight of most organisms?
A) C, H, N, Mg, O, S
B) C, H, N, O, P, S
C) C, H, N
D) Fe, C, H, O, P
E) Ca2+, K+, Na+, Mg2+, Cl-
Answer: B
Page Ref: Section 1-2

6) Which linkage(s) occur extensively in nucleotides?
A) Amide.
B) Phosphoanhydride.
C) Phosphate ester.
D) Ether.
E) Both B and C
above. Answer: E
Page Ref: Section 1-2

7) Which functional group is shown?




A) Primary amine.
B) Acyl.
C) Amide.
D) Anhydride.
E) Nitrile.
Answer:
C
Page Ref: Section 1-2

8) Proteins in biological membranes may be
A) porous.
B) attached to the membrane surface.
C) span the membrane.
D) all of the above.
E) B and C
only. Answer:
D
Page Ref: Section 1-3