MCQ Questions
Q.1.
In green and purple bacteria, electrons to reduce CO2 can come from
  • 0%
    H2S
  • 0%
    True
  • 0%
    H2O.
  • 0%
    False
Q.2.
Glycolysis is utilized by cells in both respiration and fermentation.
  • 0%
    True
  • 0%
    oxygen
  • 0%
    H2O.
  • 0%
    False
Q.3.
Which of the following is NOT necessary for respiration?
  • 0%
    photoheterotroph
  • 0%
    oxygen
  • 0%
    coenzyme A
  • 0%
    chemoheterotroph
Q.4.
Which of the following statements about photophosphorylation is FALSE?
  • 0%
    It is a step in glycolysis.
  • 0%
    It requires CO2.
  • 0%
    chemoheterotroph
  • 0%
    photoheterotroph
Q.5.
ich of the following statements regarding the glycolysis pathway is FALSE?
  • 0%
    One molecule of ATP is expended.
  • 0%
    Anabolic reactions are degradative.
  • 0%
    It is a step in glycolysis.
  • 0%
    It requires CO2.
Q.6.
In general, ATP is generated in catabolic pathways and expended in anabolic pathways.
  • 0%
    True
  • 0%
    NADH
  • 0%
    H2S
  • 0%
    False
Q.7.
The use of enzymes is necessary to increase the activation energy requirements of a chemicalreaction
  • 0%
    True
  • 0%
    three ATPs.
  • 0%
    NADH
  • 0%
    False
Q.8.
If a cell is starved for ATP, which of the following pathways would most likely be shut down?
  • 0%
    competitive inhibition.
  • 0%
    One molecule of ATP is expended.
  • 0%
    pentose phosphate pathway
  • 0%
    photoheterotroph
Q.9.
Which of the following statements are true?1-Electron carriers are located at ribosomes.2-ATP is a common intermediate between catabolic and anabolic pathways.3-ATP is used for the long-term storage of energy and so is often found in storage granules.4-Anaerobic organisms are capable of generating ATP via respiration.5-ATP can be generated by the flow of protons across protein channels.
  • 0%
    It requires CO2.
  • 0%
    2, 4, 5
  • 0%
    coenzyme A
  • 0%
    oxygen
Q.10.
In noncyclic photophosphorylation, O2 is released from
  • 0%
    H2S
  • 0%
    H2O.
  • 0%
    True
  • 0%
    False
Q.11.
Which organism is NOT correctly matched to its energy source?
  • 0%
    photoautotroph.
  • 0%
    photoautotroph - CO2
  • 0%
    chemoheterotroph
  • 0%
    photoheterotroph
Q.12.
Which of the following has bacteriochlorophylls and uses alcohols for carbon?
  • 0%
    chemoheterotroph
  • 0%
    photoheterotroph
  • 0%
    coenzyme A
  • 0%
    It requires CO2.
Q.13.
Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme,a-ketoglutarate dehydrogenase?
  • 0%
    True
  • 0%
    False
  • 0%
    NADH
  • 0%
    oxygen
Q.14.
Fatty acids are oxidized in
  • 0%
    photoautotroph.
  • 0%
    chemoheterotroph
  • 0%
    the Krebs cycle.
  • 0%
    It requires CO2.
Q.15.
Assume you are working for a chemical company and are responsible for growing a yeast culturethat produces ethanol. The yeasts are growing well on the maltose medium but are not producingalcohol. What is the most likely explanation?
  • 0%
    competitive inhibition.
  • 0%
    by glycolysis only.
  • 0%
    O2 is in the medium.
  • 0%
    It is a step in glycolysis.
Q.16.
An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of thefollowing EXCEPT
  • 0%
    competitive inhibition.
  • 0%
    O2 is in the medium.
  • 0%
    It is converted into acetyl CoA.
  • 0%
    pentose phosphate pathway
Q.17.
Which of the following is the best definition of oxidative phosphorylation?
  • 0%
    A proton gradient allows hydrogen ions to flow back into the cells through transmembraneprotein channels, releasing energy that is used to generate ATP.
  • 0%
    The oxidation of intermediate metabolic compounds releases energy that is used to generateATP.
  • 0%
    the partial oxidation of glucose with organic molecules serving as electron acceptors
  • 0%
    It involves the reduction of an organic final electron acceptor.
Q.18.
Catabolic reactions are generally degradative and hydrolytic.
  • 0%
    False
  • 0%
    H2O.
  • 0%
    True
  • 0%
    oxygen
Q.19.
Which of the following compounds is NOT an enzyme?
  • 0%
    It requires CO2.
  • 0%
    oxygen
  • 0%
    coenzyme A
  • 0%
    photoheterotroph
Q.20.
Which of the following statements about substrate-level phosphorylation is FALSE?
  • 0%
    A proton gradient allows hydrogen ions to flow back into the cells through transmembraneprotein channels, releasing energy that is used to generate ATP.
  • 0%
    The oxidation of intermediate metabolic compounds releases energy that is used to generateATP.
  • 0%
    the partial oxidation of glucose with organic molecules serving as electron acceptors
  • 0%
    It involves the reduction of an organic final electron acceptor.
Q.21.
The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT
  • 0%
    False
  • 0%
    three ATPs.
  • 0%
    It requires CO2.
  • 0%
    photoheterotroph
Q.22.
The pentose phosphate pathway can be characterized as an anabolic pathway.
  • 0%
    three ATPs.
  • 0%
    True
  • 0%
    oxygen
  • 0%
    False