BMS Exam 1 Quiz Questions With All Correct & 100%
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Predict the movement of a bacterium that possess flagella and displays negative taxis from a
chemical.
CW = clockwise
CCW = counterclockwise ✔Correct Answer-Flagella will rotate CCW away from the chemical
In chemoreceptors, absence of a signal results in ✔Correct Answer-phosphorylation of CheA which
phosphorylates CheY resulting in tumbling
The rotation of flagella is dependent on the flow of protons through Mot protein exerting
electrostatic forces. ✔Correct Answer-True
Which of the following inclusion bodies is found in aquatic bacteria and used for positioning the cell
on the surface of water? ✔Correct Answer-gas vesicles
Match each type of metabolism to the example(s) in the opposite column.
a. Many Pseudomonas species only grow in environments that contain sugar and oxygen
b. Cyanobacteria generate oxygen and obtain energy from light
c. Bacteria in rice fields commonly oxidize ammonia, gaining electrons from inorganic molecules
✔Correct Answer-a. Organotrophy
b. Phototrophy
c. Lithotrophy
Reduction potential is defined as ✔Correct Answer-the tendency for a compound to accept
electrons.
Which of the following cellular processes in bacteria is NOT powered by a proton motive force?
✔Correct Answer-substrate-level phosphorylation
Which of the following statements best describes the mechanism of action of beta-lactam antibiotics
like penicillin? ✔Correct Answer-Penicillin interferes with the crosslink of N-acetylglucosamine
(NAG) and N-acetylmuramic acid (NAM) subunits preventing the formation of new peptidoglycan
leading to a weak cell wall and cytolysis
Which of the following statements is false regarding gram-positive bacterial cells? ✔Correct
Answer-Gram-positive cells have lipolysaccahride (LPS) as part of its cell wall
Label the parts of the Gram-negative cell wall and its associated nearby structure(s).
Match the label with the corresponding description. ✔Correct Answer-a. Cell wall
b. Cellular membrane
c. Peptidoglycan
d. Lipopolysaccharide (LPS)
In what/which domain(s) of life is/are microorganisms represented? ✔Correct Answer-Archaea,
Bacteria, and Eukarya
Verified Answers|Latest Update|Already Graded A+|
Just Released
Predict the movement of a bacterium that possess flagella and displays negative taxis from a
chemical.
CW = clockwise
CCW = counterclockwise ✔Correct Answer-Flagella will rotate CCW away from the chemical
In chemoreceptors, absence of a signal results in ✔Correct Answer-phosphorylation of CheA which
phosphorylates CheY resulting in tumbling
The rotation of flagella is dependent on the flow of protons through Mot protein exerting
electrostatic forces. ✔Correct Answer-True
Which of the following inclusion bodies is found in aquatic bacteria and used for positioning the cell
on the surface of water? ✔Correct Answer-gas vesicles
Match each type of metabolism to the example(s) in the opposite column.
a. Many Pseudomonas species only grow in environments that contain sugar and oxygen
b. Cyanobacteria generate oxygen and obtain energy from light
c. Bacteria in rice fields commonly oxidize ammonia, gaining electrons from inorganic molecules
✔Correct Answer-a. Organotrophy
b. Phototrophy
c. Lithotrophy
Reduction potential is defined as ✔Correct Answer-the tendency for a compound to accept
electrons.
Which of the following cellular processes in bacteria is NOT powered by a proton motive force?
✔Correct Answer-substrate-level phosphorylation
Which of the following statements best describes the mechanism of action of beta-lactam antibiotics
like penicillin? ✔Correct Answer-Penicillin interferes with the crosslink of N-acetylglucosamine
(NAG) and N-acetylmuramic acid (NAM) subunits preventing the formation of new peptidoglycan
leading to a weak cell wall and cytolysis
Which of the following statements is false regarding gram-positive bacterial cells? ✔Correct
Answer-Gram-positive cells have lipolysaccahride (LPS) as part of its cell wall
Label the parts of the Gram-negative cell wall and its associated nearby structure(s).
Match the label with the corresponding description. ✔Correct Answer-a. Cell wall
b. Cellular membrane
c. Peptidoglycan
d. Lipopolysaccharide (LPS)
In what/which domain(s) of life is/are microorganisms represented? ✔Correct Answer-Archaea,
Bacteria, and Eukarya
