Microbiology: Chapter 6
- 1.
The beginning set of reactions is always
- A.
The krebs cycle
- B.
Electron transport chain
- C.
Glycolysis
Correct Answer
C. Glycolysis -
- 2.
Glycolysis in a nutshell
- A.
A molecule of glucose (6 carbons) is split into 3 molecules
- B.
A molecule of glucose (6 carbons) is split into 4 molecules
- C.
A molecule of glucose (6 carbons) is split into 2 molecules
Correct Answer
C. A molecule of glucose (6 carbons) is split into 2 molecules -
- 3.
A net gain of two ATP molecules is produced by
- A.
Advanced level phosphorylation
- B.
Substrate level phosphorylation
- C.
Glycolitic level phosphorylation
Correct Answer
B. Substrate level phosphorylation -
- 4.
Two molecules of the coenzyme NAD+ are reduced to NADH by
- A.
Glycolysis
- B.
Krebs cycle
- C.
Substrate level phosphorylation
Correct Answer
A. Glycolysis -
- 5.
Pyruvic acid may enter a fermentation pathway or
- A.
Alcoholic fermentation
- B.
Ethanol fermentation
- C.
Respiration
Correct Answer
C. Respiration -
- 6.
Anaerobic respiration is not that same as fermentation
- A.
True
- B.
False
Correct Answer
A. True -
- 7.
During fermentation ATP is produced.
- A.
Yes
- B.
No
Correct Answer
B. No -
- 8.
Why must fermentation take place?
- A.
In order for glycolysis to continue
- B.
In order for glycolysis to continue, NADH must be oxidized back to NAD+ so that glycolysis can continue
- C.
Pyruvic acid needs to be reduces
Correct Answer
B. In order for glycolysis to continue, NADH must be oxidized back to NAD+ so that glycolysis can continue -
- 9.
Ethanol fermentation is most popular in microorganisms, especially
- A.
Yeast
- B.
Beer
- C.
Alcohol
- D.
Bread
Correct Answer(s)
A. Yeast
B. Beer
C. Alcohol
D. Bread -
- 10.
Pyruvic acid is reduced to
- A.
Lactic acid (3 carbons)
- B.
Ethanol and carbon dioxide
- C.
Lactic acid, ethanol, and carbon dixoide
Correct Answer
C. Lactic acid, ethanol, and carbon dixoide -
- 11.
During fermentation
- A.
No ATP is produced
- B.
ATP is produced
- C.
NADH is reduced to NAD+
Correct Answer
A. No ATP is produced -
- 12.
During fermentation NADH is oxidized to NAD+
- A.
Yes
- B.
No
- C.
Only during glycolysis
Correct Answer
A. Yes -
- 13.
Respiration involves an __________ terminal electron acceptor.
Correct Answer
inorganic - 14.
Some bacteria can use nitrate and sulfate as the transfer electron agent
- A.
True
- B.
False
Correct Answer
A. True -
- 15.
Organisms can be grouped according to the way they obtain Energy and Carbon.
- A.
True
- B.
False
Correct Answer
A. True -
- 16.
Definition of phototrophs is...
- A.
Obtain energy from light
- B.
Obtain energy from the oxidation of chemical compounds
Correct Answer
A. Obtain energy from light -
- 17.
The definition of chemotrophs is...
- A.
Obtain energy from light
- B.
Obtain energy from the oxidation of chemical compounds
Correct Answer
B. Obtain energy from the oxidation of chemical compounds -
- 18.
Chemoheterophs use....
- A.
Light as an energy, CO2 as a carbon source, most common ecological "producers" and include cyanobacteria
- B.
Use light as an energy sourse, organic compounds for carbon, examples include green and purple nonsulfur bacteria
- C.
Use reduced organic compounds for both carbon and energy, examples are E. coli and human beings
- D.
Oxidize reduced inorganic compounds for energy, use CO2 as a carbon source, examples include deep sea vent bacteria and bacteria involved in decomposition and nutrient recycling.
Correct Answer
C. Use reduced organic compounds for both carbon and energy, examples are E. coli and human beings -
- 19.
Another word for lithoautotrophs is
- A.
Stone eaters
- B.
Rock feeders
- C.
Granule heaters
Correct Answer
B. Rock feeders -
- 20.
Photohetertrophs use....
- A.
Light as an energy, CO2 as a carbon source, most common ecological "producers" and include cyanobacteria
- B.
Use light as an energy sourse, organic compounds for carbon, examples include green and purple nonsulfur bacteria
- C.
Use reduced organic compounds for both carbon and energy, examples are E. coli and human beings
- D.
Oxidize reduced inorganic compounds for energy, use CO2 as a carbon source, examples include deep sea vent bacteria and bacteria involved in decomposition and nutrient recycling.
Correct Answer
B. Use light as an energy sourse, organic compounds for carbon, examples include green and purple nonsulfur bacteria -
- 21.
Photoautotrophs use...
- A.
Light as an energy, CO2 as a carbon source, most common ecological "producers" and include cyanobacteria
- B.
Use light as an energy sourse, organic compounds for carbon, examples include green and purple nonsulfur bacteria
- C.
Use reduced organic compounds for both carbon and energy, examples are E. coli and human beings
- D.
Oxidize reduced inorganic compounds for energy, use CO2 as a carbon source, examples include deep sea vent bacteria and bacteria involved in decomposition and nutrient recycling.
Correct Answer
A. Light as an energy, CO2 as a carbon source, most common ecological "producers" and include cyanobacteria -
- 22.
Chemoautotrophs use...
- A.
Light as an energy, CO2 as a carbon source, most common ecological "producers" and include cyanobacteria
- B.
Use light as an energy sourse, organic compounds for carbon, examples include green and purple nonsulfur bacteria
- C.
Use reduced organic compounds for both carbon and energy, examples are E. coli and human beings
- D.
Oxidize reduced inorganic compounds for energy, use CO2 as a carbon source, examples include deep sea vent bacteria and bacteria involved in decomposition and nutrient recycling.
Correct Answer
D. Oxidize reduced inorganic compounds for energy, use CO2 as a carbon source, examples include deep sea vent bacteria and bacteria involved in decomposition and nutrient recycling. -
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