Biology Exam 2 Study Quiz

Substrate-level phosphorylation takes place in steps 7 and 10 in glycolysis. Which of the following classes of enzymes can catalyze these reactions? 

• Mutases

• Dehydrogenases

• Kinases

• Isomerases

Tags

NGSS.HS-LS1-7

During glycolysis, one molecule of glucose is split into 2 molecules of [ Select ] ["pyruvate", "acetyl CoA", "lactate", "ethanol"]. In addition to it, the net products are [ Select ] ["1", "2", "3", "4"]  molecule(s) of ATP and two molecules of NADH.

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NGSS.HS-LS1-7

Which of the following glycolytic steps is irreversible? 

• Fructose-6-phosphate + Pi —> Fructose-1,6-bisphosphate

• Glyceraldehyde 3-phosphate + Pi + NAD+ —> 1,3 bisphosphoglycerate + NADH

• 3-phosphoglycerate —> 2-phosphoglycerate

• Glucose-6-phosphate —> Fructose-6-phosphate

Which of the following glycolytic intermediates can donate phosphoryl group to ADP,  forming ATP? Select all that apply.

• 3-phosphoglycerate

• glucose 6-phosphate

• fructose 1,6 bisphosphate

• 1,3 bisphosphoglycerate

• phosphoenolpyruvate

Tags

NGSS.HS-LS1-7

Which statement about glycolysis is TRUE?

• Glycolysis only occurs in plants and animals.

• Glycolysis occurs in the cytosol.

• Oxygen is required for glycolysis.

• Abundant ATP will stimulate glycolysis.

Which of the following statements is FALSE? 

• Under aerobic conditions pyruvate is converted to acetyl-CoA that enters the citric acid cycle.

• In anaerobic muscle, pyruvate is converted to lactate in order to regenerate NAD+ that will be used again in glycolysis.

• In yeast growing anaerobically, pyruvate is converted to ethanol.

• After fermentation, lactate enters the citric acid cycle to regenerate NADH

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Pyruvate dehydrogenase complex converts pyruvate to acetyl-CoA. An additional product of this reaction is: 

• ATP

• NADH

• NAD+

• CoA

Tags

NGSS.HS-LS1-7

Which of the following steps in the citric acid cycle is substrate-level phosphorylation? 

• Succinyl-CoA + GDP -> succinate + GTP + CoA

• Acetyl-CoA + oxaloacetate -> citrate + CoA

• Isocitrate + NAD+ -> alpha-ketoglutarate + NADH

• Succinate + FAD -> fumarate + FADH2

Tags

NGSS.HS-PS1-4

Select the true statements about the citric acid cycle.

• The citric acid cycle operates only when O₂ is present.

• One turn of the cycle produces 3 NADH, 1 FADH₂ and 1 GTP (ATP).

• The citric acid cycle converts pyruvate into lactate before having it enter the cycle.

• The citric acid cycle occurs in most cells, including anaerobic microorganisms.

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NGSS.HS-LS1-7

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Which of the following molecules can produce the most energy through cellular respiration?

• Nucleotides

• Amino acids

• Glucose

• Fatty Acids

Tags

NGSS.HS-LS1-7