AP Bio Glycolysis

The electron carrier used in glycolysis is

• NAD+

• FADH

• FADH+

• NADP+

One pyruvate molecule has _________- carbons

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS1-7

What is the term for metabolic pathways that release stored energy by breaking down complex molecules?

• catabolic pathway

• anabolic pathway

• fermentation pathway

• thermodynamic pathway

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes

• hydrolyzed.

• hydrogenated

• oxidized

• reduced

Tags

NGSS.HS-LS1-7

Which of the following steps of cellular respiration could be described as “the breakdown of 1 glucose molecule by enzymes into 2 3-carbon pyruvate molecules, which releases energy”?

• Glycolysis

• Link Reaction

• Krebs/Citric Acid Cycle

• Electron Transport Chain and Chemiosmosis

In glycolysis, _____ is oxidized and _____ is reduced.

• glucose, NAD+

• pyruvate, NAD+

• glucose, NADH

• pyruvate, NADH

Tags

NGSS.HS-LS1-7

Pyruvate dehydrogenase is an enzyme that converts pyruvate to acetyl-CoA. Acetyl-CoA is further metabolized in the Krebs cycle. A researcher measured the accumulation of acetyl-CoA in a reaction containing pyruvate and pyruvate dehydrogenase under several different conditions. Which of the following best describes the cellular location where pyruvate dehydrogenase is most likely active?

• The cytosol

• The lysosomes

• The nucleus

• The mitochondrial matrix

Scientists were interested in testing the effects of rotenone, a broad-spectrum pesticide, on a cell culture. Cell culture AA was used as a control, while culture BB was treated with rotenone. After a period of time, the scientists measured the concentration of several metabolites in the mitochondria of cells in both cultures. Their results are shown in the table. Based on the data in the table, which of the following best explains the effects of rotenone on cellular respiration?

• Rotenone acts as an inhibitor of the enzymes in the Krebs cycle.

• NADH, produced during glycolysis, is not able to enter the mitochondria because transport proteins are blocked from entering.

• Treated cells are not able to break down NADH because certain enzymes of the electron transport chain are inhibited.

• Rotenone acts as an allosteric inhibitor of glycolytic enzymes, thus inhibiting cellular respiration.

Tags

NGSS.HS-LS1-7

Which of the following DO NOT contain carbon atoms that were originally present in glucose at the start of cellular respiration?

• pyruvate

• citrate

• carbon dioxide

• none of these are correct

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Approximately how many molecules of ATP are produced from the complete oxidation of two molecules of glucose (C6H12O6) in aerobic cellular respiration?

• 2 - 4

• 4 - 6

• 30 - 32

• 60 - 64

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3