UMKC Bio 109 Exam 1 2026
Exam Questions with 100%
Correct Answers | Latest Update
What is NOT true about the bacterial cell wall?
A. It gives shape and rigidity to the cell.
B. It cannot prevent a cell from undergoing plasmolysis when placed in a
hypertonic environment.
C. It is the source of endotoxins in gram-positive bacteria.
,D. It prevents the cell from bursting in a hypotonic environment.
E. It is the site of action for some antibiotics. - 🧠 ANSWER ✔✔C. It is the
source of endotoxins in gram-positive bacteria.
Which of the following statements about the bacterial cell wall is false?
A. The cell wall gives shape and rigidity to the cell.
B. The cell wall prevents the cell from undergoing plasmolysis in a
hypertonic environment.
C. The cell wall is related to some symptoms of disease.
D. The cell wall prevents the cell from bursting in a hypotonic environment.
E. The cell wall is the site of action for some antibiotics. - 🧠 ANSWER ✔✔B.
The cell wall prevents the cell from undergoing plasmolysis in a hypertonic
environment.
Termites eat wood, but many do not produce enzymes themselves that will
digest the cellulose and lignin in the wood. Instead, some termites contain
a complex community of protozoa, bacteria, and archaea that could help
digest the cellulose and lignin. Imagine an experiment in which termites in
Group 1 were fed wood and termites in Group 2 were fed wood and
antibiotics. The amount of energy that termites extracted from the wood
, was then measured for each group. If termites in the two groups gained
equal amounts of energy, which of the conclusions is the most logical?
A. We would conclude that the bacteria did not contribute to digestion of
cellulose and lignin.
B. We would conclude that the protozoa did not contribute to digestion of
cellulose and lignin.
C. We would conclude that the archaea did not contribute to digestion of
cellulose and lignin.
D. We would conclude that none of the three groups were needed to dige -
🧠 ANSWER ✔✔A. We would conclude that the bacteria did not contribute
to digestion of cellulose and lignin.
When a non-pathogenic strain of pneumoniae is mixed with a heat-killed
pathogenic strain, the non-pathogenic strain is converted to the pathogenic
form. The process responsible for this conversion is called:
A. conjugation
B. sexual reproduction
C. transformation
D. translocation
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STATEMENT. ALL RIGHTS RESERVED
3
Exam Questions with 100%
Correct Answers | Latest Update
What is NOT true about the bacterial cell wall?
A. It gives shape and rigidity to the cell.
B. It cannot prevent a cell from undergoing plasmolysis when placed in a
hypertonic environment.
C. It is the source of endotoxins in gram-positive bacteria.
,D. It prevents the cell from bursting in a hypotonic environment.
E. It is the site of action for some antibiotics. - 🧠 ANSWER ✔✔C. It is the
source of endotoxins in gram-positive bacteria.
Which of the following statements about the bacterial cell wall is false?
A. The cell wall gives shape and rigidity to the cell.
B. The cell wall prevents the cell from undergoing plasmolysis in a
hypertonic environment.
C. The cell wall is related to some symptoms of disease.
D. The cell wall prevents the cell from bursting in a hypotonic environment.
E. The cell wall is the site of action for some antibiotics. - 🧠 ANSWER ✔✔B.
The cell wall prevents the cell from undergoing plasmolysis in a hypertonic
environment.
Termites eat wood, but many do not produce enzymes themselves that will
digest the cellulose and lignin in the wood. Instead, some termites contain
a complex community of protozoa, bacteria, and archaea that could help
digest the cellulose and lignin. Imagine an experiment in which termites in
Group 1 were fed wood and termites in Group 2 were fed wood and
antibiotics. The amount of energy that termites extracted from the wood
, was then measured for each group. If termites in the two groups gained
equal amounts of energy, which of the conclusions is the most logical?
A. We would conclude that the bacteria did not contribute to digestion of
cellulose and lignin.
B. We would conclude that the protozoa did not contribute to digestion of
cellulose and lignin.
C. We would conclude that the archaea did not contribute to digestion of
cellulose and lignin.
D. We would conclude that none of the three groups were needed to dige -
🧠 ANSWER ✔✔A. We would conclude that the bacteria did not contribute
to digestion of cellulose and lignin.
When a non-pathogenic strain of pneumoniae is mixed with a heat-killed
pathogenic strain, the non-pathogenic strain is converted to the pathogenic
form. The process responsible for this conversion is called:
A. conjugation
B. sexual reproduction
C. transformation
D. translocation
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
