Microbiology Ch.5

Which statements are true?

• ATP is used for the long-term storage of energy and so is often found in storage granules.

• ATP is a common intermediate between catabolic and anabolic pathways.

• 2, 4, 5

• Electron carriers are located at ribosomes.

• Anaerobic organisms are capable of respiration.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

NGSS.HS-LS2-5

What is the fate of pyruvic acid in an organism that uses aerobic respiration?

• It is oxidized in the Krebs cycle.

• It is reduced in the Krebs cycle.

• It is oxidized in the electron transport chain.

• It is catabolized in glycolysis.

• It is reduced to lactic acid.

Tags

NGSS.HS-LS1-7

A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely

• Using the peptides.

• Oxidizing the glucose.

• Not growing.

• Fermenting the glucose.

Tags

NGSS.HS-LS2-3

Which of the following statements about photophosphorylation is false?

• The oxidation of carrier molecules releases energy.

• It occurs in photosynthesizing cells.

• It requires CO2.

• Energy from oxidation reactions is used to generate ATP from ADP.

• Light liberates an electron from chlorophyll.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

In green and purple bacteria, electrons to reduce CO2 come from

• Chlorophyll.

• Sunlight.

• C6H12O6.

• H2.

• CO2.

Which of the following is the best definition of oxidative phosphorylation?

• The energy released in the reduction of carrier molecules is used to generate ATP.

• The transfer of a high-energy phosphate group to ADP.

• The energy released as carrier molecules are oxidized is used to generate ATP.

• Electrons are passed through a series of carriers to O2.

Tags

NGSS.HS-LS1-7

Which of the following statements about anaerobic respiration is false?

• It generates ATP.

• It involves the reduction of nitrate.

• It involves the Krebs cycle.

• It involves glycolysis only.

• It requires cytochromes.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Gallionella bacteria can get energy from the reaction Fe2+ --> Fe3+. This reaction is an example of

• Oxidation.

• Fermentation.

• Photophosphorylation.

• The Calvin-Benson cycle.

• Reduction.

Which of the following statements about substrate-level phosphorylation is false?

• The oxidation of intermediate metabolic compounds releases energy that is used to generate ATP.

• It involves the direct transfer of a high-energy phosphate group from an intermediate metabolic compound to ADP.

• No final electron acceptor is required.

• It occurs in glycolysis.

• It occurs in the Krebs cycle.

In noncyclic photophosphorylation, O2 is produced from

• H2O.

• Sunlight.

• CO2.

• C6H12O6.

• Chlorophyll.