carbohydrate metabolism

How many total molecules of ATP are synthesized from ADP via glycolysis of a single molecule of glucose?

• 36

• 2

• 4

• 38

What carbohydrates are reactants in glycolysis?

• glucose only

• glucose and sucrose

• sucrose

• neither glucose or sucrose can directly participate in glycolysis

In which organisms does glycolysis occur?

• Neither aerobic or anaerobic organisms

• Aerobic organisms only

• Anaerobic organisms only

• Both aerobic and anaerobic organisms

Which statement concerning the glycolytic and gluconeogenic pathways is correct?

• Both are catabolic

• Gluconeogenesis is anabolic and glycolysis is catabolic

• Both are anabolic

• Gluconeogenesis is catabolic and glycolysis is anabolic

Tags

NGSS.HS-PS1-4

What body conditions favor gluconeogenesis over glycolysis?

• High blood sugar

• Starvation

• Increasing cellular levels of AMP

• Low cellular levels of pyruvate

In the redox reaction: pyruvate + NADH + H+ ⇋ lactate + NAD+, which reactant is oxidized, and which is reduced?

• NADH is reduced and pyruvate is oxidized

• Lactate is reduced and pyruvate is oxidized

• Lactate is reduced and NAD+ is oxidized

• Pyruvate is reduced and NADH is oxidized

Tags

NGSS.HS-LS2-3

NGSS.HS-PS1-2

NGSS.HS-LS2-5

Which glycolytic reaction cannot be directly reversed in gluconeogenesis?

• 1,3-bisphosphoglycerate → 3-phosphoglycerate

• Glyceraldehyde 3-phosphate → 1,3-bisphosphoglycerate

• Glucose-6-phosphate → fructose-6-phosphate

• Glucose → glucose-6-phosphate

Tags

NGSS.HS-PS1-2

One molecule of acetyl-coenzyme A yields what energy-rich molecules when metabolized via the citric acid cycle?

• 1 NADH + 1 GTP

• 3 NADH + 1 FADH2 + 1 ATP

• 2 NADH + 1 FADH2 + 1 GTP

• 2 NADH + 2 FADH2 + 1 GTP

Tags

NGSS.HS-LS2-3

NGSS.HS-LS1-7

Triose phosphate isomerase converts dihydroxyacetone phosphate to glyceraldehyde 3-phosphate through an intermediate with a carbon-carbon double bond.

• true

• false

Which of the following is a cofactor in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase?

• ATP

• NAD +

• heme

• NADP+