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In green and purple bacteria, electrons to reduce CO2 can come from
0%
H2S
0%
True
0%
H2O.
0%
False
Glycolysis is utilized by cells in both respiration and fermentation.
0%
True
0%
oxygen
0%
H2O.
0%
False
Which of the following is NOT necessary for respiration?
0%
photoheterotroph
0%
oxygen
0%
coenzyme A
0%
chemoheterotroph
Which of the following statements about photophosphorylation is FALSE?
0%
It is a step in glycolysis.
0%
It requires CO2.
0%
chemoheterotroph
0%
photoheterotroph
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.
In general, ATP is generated in catabolic pathways and expended in anabolic pathways.
0%
True
0%
NADH
0%
H2S
0%
False
The use of enzymes is necessary to increase the activation energy requirements of a chemicalreaction
0%
True
0%
three ATPs.
0%
NADH
0%
False
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
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
In noncyclic photophosphorylation, O2 is released from
0%
H2S
0%
H2O.
0%
True
0%
False
Which organism is NOT correctly matched to its energy source?
0%
photoautotroph.
0%
photoautotroph - CO2
0%
chemoheterotroph
0%
photoheterotroph
Which of the following has bacteriochlorophylls and uses alcohols for carbon?
0%
chemoheterotroph
0%
photoheterotroph
0%
coenzyme A
0%
It requires CO2.
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
Fatty acids are oxidized in
0%
photoautotroph.
0%
chemoheterotroph
0%
the Krebs cycle.
0%
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?
0%
competitive inhibition.
0%
by glycolysis only.
0%
O2 is in the medium.
0%
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
0%
competitive inhibition.
0%
O2 is in the medium.
0%
It is converted into acetyl CoA.
0%
pentose phosphate pathway
Which of the following is the best definition of oxidative phosphorylation?
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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.
Catabolic reactions are generally degradative and hydrolytic.
0%
False
0%
H2O.
0%
True
0%
oxygen
Which of the following compounds is NOT an enzyme?
0%
It requires CO2.
0%
oxygen
0%
coenzyme A
0%
photoheterotroph
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.
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
The pentose phosphate pathway can be characterized as an anabolic pathway.
0%
three ATPs.
0%
True
0%
oxygen
0%
False
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