UPDATED Exam Questions and
CORRECT Answers
Which of the following activities occurs in the fermentation of glucose, cellular respiration of
glucose, or both?
__3__ Substrate-level phosphorylation
__2__ Oxidative phosphorylation
__2__ Electron transport chain
__3__ Production of pyruvate
__1__ Conversion of pyruvate to CO2 and ethanol
__3__ Glycolysis
__2__ The Krebs cycle
__1__Reduction of pyruvate to lactic acid
__3__Production of NADH
__3__Production of ATP - CORRECT ANSWER - 1.Fermentation of glucose
2.Cellular respiration of glucose
3.Both fermentation of glucose and cellular respiration of glucose
The figure shows a tRNA for alanine. The three nucleotides as indicated serve as a ___.
A. Codon
B. Binding site for DNA
C. Binding site for an amino acid
D. Anticodon
E. B and D - CORRECT ANSWER - D. Anticodon
,What mode of motility is found in protozoa?
A.Flagella
B.Cilia
C. Pseudopodia
D. All of the above
E. B and C - CORRECT ANSWER - D. All of the above
Which of the following statements about the microbial capsule is correct?
A. Slime layer is a part of a capsule.
B. Capsules have not been found in eukaryotic microbes.
C. Capsule is a type of glycocalyx.
D. Capsules help bacteria adhere to surfaces.
E. Encapsulated Streptococcus pneumoniae is resistant to phagocytosis.
F. Unencapsulated or non-encapsulated Streptococcus pneumoniae has no capsule while
encapsulated S. pneumoniae has a capsule. - CORRECT ANSWER - C, D, E, F
C. Capsule is a type of glycocalyx.
D. Capsules help bacteria adhere to surfaces.
E. Encapsulated Streptococcus pneumoniae is resistant to phagocytosis.
F. Unencapsulated or non-encapsulated Streptococcus pneumoniae has no capsule while
encapsulated S. pneumoniae has a capsule.
,Which of the following features is not common to both bacteria and the mitochondria found in
eukaryotic cells?
A. circular DNA
B. 70S ribosome
C. binary fission
D. peptidoglycan
E. B and D - CORRECT ANSWER - D. peptidoglycan
The structure shown in the figure should be expected in __________.
(ribosome small subunit: 30s
ribosome large subunit: 50s
70s complete ribosome)
A. Bacteria
B. Yeast
C. Protozoa
D. Helminths
E. All of the above - CORRECT ANSWER - E. All of the above
Which of the following size comparisons is correct? (>: larger than; <: smaller than)
A. viruses < yeast cells < bacteria
B. protozoa > bacteria > viruses
C. yeast cells = bacteria > viruses
D. yeast cells > bacteria > viruses - CORRECT ANSWER - B, D
, B. protozoa > bacteria > viruses
D. yeast cells > bacteria > viruses
This figure shows a growing DNA strand. Which of the labeled side groups is involved in the
incorporation of a new nucleotide?
A. 1
B. 2
C. 3
D. 4
E. 1 and 4 - CORRECT ANSWER - D. 4
(3' with OH attached)
In a bacterial cell, the enzymes involved in glycolysis should be found in the cytoplasm whereas
in a yeast cell, the enzymes are located in the mitochondrial matrix.
A. True
B. False - CORRECT ANSWER - B. False
In bacteria, which of the following cellular structures forms the permeation barrier?
A. plasma membrane
B. peptidoglycan
C. outer membrane
D. All of the above
E. A and C - CORRECT ANSWER - E. A and C
A spherical bacterium has a diameter of 1 μm. Approximately, how many bacteria of the same
kind can fit into an area of 1 mm2? (Hint: Treat the bacteria as squares) - CORRECT
ANSWER - Answer: 1000000