Worksheetscarbohydrate metabolism
Total questions: 10
Worksheet time: 13mins
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
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
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
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
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+
