Carbohydrate Metabolism Quiz

What is the primary site for carbohydrate digestion?

• Mouth

• Stomach

• Small Intestine

• Liver

Which enzyme catalyzes the phosphorylation of glucose to yield glucose 6-phosphate?

• Hexokinase

• Phosphoglucoisomerase

• Phosphofructokinase

• Glyceraldehyde 3-phosphate dehydrogenase

What is the final step in carbohydrate digestion?

• Conversion of disaccharides to monosaccharides

• Formation of glucose 6-phosphate

• Isomerization of glucose 6-phosphate to fructose 6-phosphate

• Phosphorylation of ADP to form 3-phosphoglycerate

Which stage of glycolysis is an energy-consuming stage?

• Six-carbon stage

• Three-carbon stage

• Both stages

• Neither stage

Which enzyme catalyzes the cleavage of fructose 1,6-bisphosphate into two triose phosphates?

• Aldolase

• Phosphoglycerokinase

• Triosephosphate isomerase

• Phosphoglyceromutase

What is the net result of the isomerization of glucose 6-phosphate to fructose 6-phosphate?

• Formation of glyceraldehyde 3-phosphate

• Formation of dihydroxyacetone phosphate

• Formation of 1,3-bisphosphoglycerate

• Formation of 2-phosphoglycerate

Which step of glycolysis involves the production of ATP through substrate-level phosphorylation?

• Step 1: Phosphorylation Using ATP

• Step 3: Phosphorylation Using ATP

• Step 7: Phosphorylation of ADP

• Step 10: Phosphorylation of ADP

What is the final product of glycolysis?

• Glucose

• Pyruvate

• Lactic Acid

• Acetyl-CoA

Which steps of glycolysis involve the production of ATP?

• Steps 1, 3, 7, and 10

• Steps 2, 4, 6, and 8

• Steps 5 and 9

• Steps 11 and 12

What is the net gain of ATP molecules for every glucose molecule converted into two pyruvates?

• 1 ATP

• 2 ATP

• 3 ATP

• 4 ATP