SUGAR & INSULIN

Question 1

What hormone stores glucose in adipose tissue?

Answer 1

Insulin

Question 2

Decreased insulin will result in what?

Answer 2

increased gluconeogenesis

Question 3

what is phosphorylated in an insulin receptor?

Answer 3

tyrosine

Question 4

what needs a protein transporter to cross the cell membrane?

Answer 4

Glucose via GLUT 4 FAC BIDIRECTIONAL TRANSPORTATION

Question 5

Glucagon signals through?

Answer 5

cAMP (intercellular 2nd messenger)

Question 6

Glucagon receptor is a __________ coupled to a ___________

Answer 6

7-transmembrane receptor coupled to a G-protein + cAMP

Question 7

What is intracellular element of glucagon?

a. cAMP
b. AMP
c. ATP
d. ADP

Answer 7

a. cAMP

Question 8

What do Glucagon & epinephrine both/have in common?

Answer 8

Glycogenolysis + GLUCEONEOGENESIS

Question 9

Oxidative phosphorylation occurs in what enzyme?

Answer 9

Pyruvate dehydrogenase

Question 10

What enzyme is used for decarboxylation?

Answer 10

pyruvate decarboxylase

Question 11

rate limiting enzyme for glycosis?

Answer 11

phosphorfructokinase (PFK)

Question 12

What is not found in msucles?

Answer 12

Glucose-6-phosphate

Question 13

Glucose is sequestered by which enzyme

Answer 13

Hexokinase

Question 14

What is not true regarding hexokinase & glucokinase?

Answer 14

they have same KM glucokinase is higher, more affinity

Question 15

Describe Glucokinase

Answer 15

a soform of hexokinase found only in the liver & only uses substrate glucose

Question 16

UTP-Glucose reacts with which of the following in glycogen synthesis

Answer 16

Glucose-1-Phosphate

Question 17

What steps restores oxaloacetate in TCA?

Answer 17

Malate, malate dehydrogenase

Question 18

What enzymes produce oxaloacetate?

Answer 18

Pyruvate Carboxylase (pyruvate–> oxaloacetate)

Question 19

What is the main source of Glycerol?

Answer 19

Glucose/ pyruvate

Question 20

Where is phosphoenolpyruvate found?

Answer 20

Liver