In green and purple bacteria, electrons to reduce CO2 can come from
  • H2S
  • True
  • H2O.
  • False
Glycolysis is utilized by cells in both respiration and fermentation.
  • True
  • oxygen
  • H2O.
  • False
Which of the following is NOT necessary for respiration?
  • photoheterotroph
  • oxygen
  • coenzyme A
  • chemoheterotroph
Which of the following statements about photophosphorylation is FALSE?
  • It is a step in glycolysis.
  • It requires CO2.
  • chemoheterotroph
  • photoheterotroph
ich of the following statements regarding the glycolysis pathway is FALSE?
  • One molecule of ATP is expended.
  • Anabolic reactions are degradative.
  • It is a step in glycolysis.
  • It requires CO2.
In general, ATP is generated in catabolic pathways and expended in anabolic pathways.
  • True
  • NADH
  • H2S
  • False
The use of enzymes is necessary to increase the activation energy requirements of a chemicalreaction
  • True
  • three ATPs.
  • NADH
  • False
If a cell is starved for ATP, which of the following pathways would most likely be shut down?
  • competitive inhibition.
  • One molecule of ATP is expended.
  • pentose phosphate pathway
  • photoheterotroph
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.
  • It requires CO2.
  • 2, 4, 5
  • coenzyme A
  • oxygen
In noncyclic photophosphorylation, O2 is released from
  • H2S
  • H2O.
  • True
  • False
Which organism is NOT correctly matched to its energy source?
  • photoautotroph.
  • photoautotroph - CO2
  • chemoheterotroph
  • photoheterotroph
Which of the following has bacteriochlorophylls and uses alcohols for carbon?
  • chemoheterotroph
  • photoheterotroph
  • coenzyme A
  • It requires CO2.
Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme,a-ketoglutarate dehydrogenase?
  • True
  • False
  • NADH
  • oxygen
Fatty acids are oxidized in
  • photoautotroph.
  • chemoheterotroph
  • the Krebs cycle.
  • It requires CO2.
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?
  • competitive inhibition.
  • by glycolysis only.
  • O2 is in the medium.
  • It is a step in glycolysis.
An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of thefollowing EXCEPT
  • competitive inhibition.
  • O2 is in the medium.
  • It is converted into acetyl CoA.
  • pentose phosphate pathway
Which of the following is the best definition of oxidative phosphorylation?
  • A proton gradient allows hydrogen ions to flow back into the cells through transmembraneprotein channels, releasing energy that is used to generate ATP.
  • The oxidation of intermediate metabolic compounds releases energy that is used to generateATP.
  • the partial oxidation of glucose with organic molecules serving as electron acceptors
  • It involves the reduction of an organic final electron acceptor.
Catabolic reactions are generally degradative and hydrolytic.
  • False
  • H2O.
  • True
  • oxygen
Which of the following compounds is NOT an enzyme?
  • It requires CO2.
  • oxygen
  • coenzyme A
  • photoheterotroph
Which of the following statements about substrate-level phosphorylation is FALSE?
  • A proton gradient allows hydrogen ions to flow back into the cells through transmembraneprotein channels, releasing energy that is used to generate ATP.
  • The oxidation of intermediate metabolic compounds releases energy that is used to generateATP.
  • the partial oxidation of glucose with organic molecules serving as electron acceptors
  • It involves the reduction of an organic final electron acceptor.
The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT
  • False
  • three ATPs.
  • It requires CO2.
  • photoheterotroph
The pentose phosphate pathway can be characterized as an anabolic pathway.
  • three ATPs.
  • True
  • oxygen
  • False
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