CARB METABOLISM 2

Carbohydrates are organic compounds made up of _________

• carbon and hydrogen

• carbon, hydrogen and oxygen

• carbon, hydrogen, oxygen and nitrogen

• carbon and oxygen

The minimum number of carbon in a monosaccharide is

• 2

• 3

• 4

• 5

Two monosaccharides are joined by _________

• peptide bond

• ester bond

• glycosidic bond

• phosphodiester

Glycolysis produces a total of ____ ATP

• 2

• 3

• 4

• 5

Which statement concerning the glycolytic and gluconeogenic pathways is correct?

• Both are catabolic

• Both are anabolic

• Gluconeogenesis is catabolic and glycolysis is anabolic

• Gluconeogenesis is anabolic and glycolysis is catabolic

Pyruvate + NADH + H+ ⇋ lactate + NAD+ : which reactant is oxidized, and which one is reduced?

• NADH is reduced and pyruvate is oxidized

• Lactate is reduced and NAD+ is oxidized

• Pyruvate is reduced and NADH is oxidized

• Lactate is reduced and pyruvate is oxidized

Which glycolytic reaction that cannot be directly reversed in gluconeogenesis?

• Glucose → glucose-6-phosphate

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

• 1,3-bisphosphoglycerate → 3-phosphoglycerate

• Glyceraldehyde 3-phosphate → 1,3-bisphosphoglycerate

Gluconeogenesis is most important ________

• after meal

• after prolonged fasting

• after a 5k run

• between lunch and dinner

When we have just eaten (post prandial state) which hormone is active?

• epinephrine

• insulin

• glucagon

• norepinephrine

During vigorous exercise, pyruvate produced by glycolysis is converted to _______________

• lactate

• acetate

• pyruvic acid

• alanine