Exam 16: Glycogen Metabolism and Gluconeogenesis

Avidin,a protein intact in raw egg whites,prevents the absorption of biotin in the intestine resulting in biotin deficiency.Which of the following is affected in individuals who consume large amounts of raw egg?

Which of the following enzymes catalyzes the conversion of glucose-1-phosphate to glucose-6-phosphate?

Matching Choose the correct answer from the list.Not all the answers will be used. -Glucose can be synthesized from noncarbohydrate precursors by______.

Matching Choose the correct answer from the list.Not all the answers will be used. -An enzyme present in the endoplasmic reticulum of liver cells is ______.

Matching Choose the correct answer from the list.Not all the answers will be used. -Low blood glucose (< 5mM)levels result in the release of ______.

A deficiency in the enzyme PEPCK (PEP carboxykinase)would

What is the net energetic cost of converting two pyruvate to one glucose by gluconeogenesis in ATP equivalents?

A deficiency in muscle glycogen phosphorylase would result in

Levels of glucose-6-phosphate (G6P)are affected by which of the following? (I)glycogen breakdown (II)activity of the pentose phosphate pathway (III)galactose preparation for entry into glycolysis

Which of the following best explains the energetically favorable formation of UDP-glucose in the liver and muscle?

Muscle cells are not able to supply glucose for other tissues because

Which of the following describes a sequence which will ultimately activate glycogen breakdown in a muscle?

The Cori cycle is effective because

In glycogen synthesis,the intermediate between glucose-1-phosphate and glycogen is

The breakdown of glycogen produces G1P.Which of the following is FALSE regarding G1P?

Which enzyme has an intermediate of the form presented below?

Matching Choose the correct answer from the list.Not all the answers will be used. -Both glycogen synthesis and glycogen breakdown share the metabolite ______.

Hexokinase does not catalyze the final step in gluconeogenesis as written below because Glucose-6-phosphate + ADP $\to$ glucose + ATP

If cAMP levels are high (I)Glycogenolysis will occur in muscle cells but not liver cells. (II)Glucose released from muscle glycogen will enter glycolysis. (III)Glucose released from liver glycogen will exit liver cells via the GLUT4 transporter. (IV)Glucose will enter liver cells resulting in glycogen synthesis.

Which of the following will NOT activate glycogen phosphorylase in the liver?