Question1: Glycogen: a.) Is broken down to free glucose-1-P by glycogen phosphat

Question

Question1:
Glycogen:
a.) Is broken down to free glucose-1-P by glycogen phosphatase
b.) Has branch chains that are attached at the branch points by alpha 1,4
glycosidic linkages
c.) Built by glycogen synthase when there is high ATP and glucose
d.) Is an important storage form of fructose in our muscle cells
e.) Both a and c

Question 2:
Which of these glycolytic enzymes is not found in gluconeogenesis?

a.) phosphoglycerate kinase
b.) phosphoglyceromutase
c.) enolase
d.) triose phosphate isomerase
e.) all are part of gluconeogenesis

Question 3:
-ketoglutarate dehydrogenase is responsible for oxidizing -ketoglutarate to make
NADH and acetyl-CoA.
a.) True
b.) False

Question #4:
Ethanol production exists in order to make ______ for glycolysis.

Question #5:
What effect will high fructose-2,6-bisphosphate and low ATP have on glycolysis?
a.) It will shut glycolysis down at the step of triose phosphate isomerase
b.) It will shut glycolysis down at phosphofructokinase
c.) It will speed up glycolysis by activating triose phosphate isomerase
d.) It will speed up glycolysis by activating fructose 1,6 bisphosphatase
e.) None of the above

Question #6:
Alanine is an allosteric activator of pyruvate kinase.
a.) True
b.) False

Explanation / Answer

Answer 3: Option B
-ketoglutarate dehydrogenase will break -ketoglutarate into succinyl Co-A and NADH and CO2. Therefore this statement is false.

Answer 4: NAD+
Pyruvate from glycolysis can enter ethanol fermentation reaction to regenerate NAD+, which can be used during glycolysis.

Answer 5: Option D
ATP is a inhibitor of glycolysis, so if its concentration is low and the activator, i.e. fructose-2,6-bisP is present in more amount, then rate of glycolysis will increase. F-2,6-BisP will activate the enzyme fructose 1,6 bisphosphatase.

Answer 6: Option A
Alanine along with ATP and citrate inhibit the activity of the enzyme pyruvate kinase.

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