Microbiology Exam Review
Microbiology Exam 1 Name_______________________
1/30/07
1. (1 pt) Who was the first person to observe bacteria using a microscope?
a. Lister b. van Leeuvenhoek c. Pastuer d. Koch
2. (2 pts) Which two of the following contribute to the opportunistic and infectious nature of bacteria? a. flagella b. ability to persist in unfavorable environments
c. selectively permeable membranes d. fast growth
e. ability to sense chemical gradients f. peptidoglycan
3. (1 pt) Capsules, sheaths, and slime layers generally aid with
a. nutrient transport b. cell attachment
c. chemotaxis d. heat resistance
4. (1 pt) Penicillin controls bacterial growth by:
a. preventing synthesis of the lipopolysaccharide layer b. inhibiting protein synthesis
c. preventing cross-link formation in peptidoglycan d. preventing generation of the proton motive force
5. (1 pt) The endosymbiont theory refers to the idea that:
a. human intestinal function depends upon populations of bacteria in the intestinal tract
b. the plant chloroplast evolved from a symbiosis between a photosynthetic prokaryote and a eukaryotic organism
c. plasmids that encode for “non-essential” functions in bacteria can readily be transmitted between cells
d. termites depend upon a bacterial symbiosis to digest cellulose
6. (1 pt) Proponents of spontaneous generation believed that bacteria originated from:
a. the air b. chemical breakdown of matter
c. pre-existing cells d. maggots
7. (1 pt) In response to experiments showing that spontaneous generation did not occur in broth that was sealed and sterilized, proponents of spontaneous generation argued that ________ was/were necessary for spontaneous generation to occur.
a. bacteria b. air c. cells d. disease
8. (1 pt) How did Louis Pasteur counter this argument and disprove spontaneous generation?
a. He sealed and sterilized his experimental flasks
b. He cultured anaerobic organisms
c. He allowed free exchange of air in his
1/30/07
1. (1 pt) Who was the first person to observe bacteria using a microscope?
a. Lister b. van Leeuvenhoek c. Pastuer d. Koch
2. (2 pts) Which two of the following contribute to the opportunistic and infectious nature of bacteria? a. flagella b. ability to persist in unfavorable environments
c. selectively permeable membranes d. fast growth
e. ability to sense chemical gradients f. peptidoglycan
3. (1 pt) Capsules, sheaths, and slime layers generally aid with
a. nutrient transport b. cell attachment
c. chemotaxis d. heat resistance
4. (1 pt) Penicillin controls bacterial growth by:
a. preventing synthesis of the lipopolysaccharide layer b. inhibiting protein synthesis
c. preventing cross-link formation in peptidoglycan d. preventing generation of the proton motive force
5. (1 pt) The endosymbiont theory refers to the idea that:
a. human intestinal function depends upon populations of bacteria in the intestinal tract
b. the plant chloroplast evolved from a symbiosis between a photosynthetic prokaryote and a eukaryotic organism
c. plasmids that encode for “non-essential” functions in bacteria can readily be transmitted between cells
d. termites depend upon a bacterial symbiosis to digest cellulose
6. (1 pt) Proponents of spontaneous generation believed that bacteria originated from:
a. the air b. chemical breakdown of matter
c. pre-existing cells d. maggots
7. (1 pt) In response to experiments showing that spontaneous generation did not occur in broth that was sealed and sterilized, proponents of spontaneous generation argued that ________ was/were necessary for spontaneous generation to occur.
a. bacteria b. air c. cells d. disease
8. (1 pt) How did Louis Pasteur counter this argument and disprove spontaneous generation?
a. He sealed and sterilized his experimental flasks
b. He cultured anaerobic organisms
c. He allowed free exchange of air in his