sem 2 exam 3 clickers

Question 1

1. In the urea (ornithine cycle) , which of the following reaction occurs in the mitochondria
   a. Citruillin + aspartate –> argininosuccinate
   b. Arginine –> urea + ornithine
   c. Ammonia + co2 –> carbamoyl phosphate
   d. Both a and c in the mitochondria

Answer 1

c. Ammonia + co2 –> carbamoyl phosphate

Question 2

In protein synthesis, how many high energy phosphate bonds are needed to form one peptide linkage?

a. One
b. Two
c. Three
d. Four

Answer 2

d. Four

Question 3

Which of the following is the major rate-limiting factor for almost all energy metabolism of the body?

	a. ATP 
	b. ADP 
	c. NAD+
	d. glucose

Answer 3

b. ADP

Question 4

Which of the following statements is true

a. The liver has a low blood flow and a high vascular resistance
b. The liver has a low blood flow and a low vascular resistance
c. The liver has a high blood flow and a high vascular resistance
d. The liver has a high blood flow and a low vascular resistance

Answer 4

d. The liver has a high blood flow and a low vascular resistance

Question 5

What is not a characteristic of  metabolic syndrome associated with diabetes 
a. Peripheral neuropathy 
b. Obesity 
c. Fasting hyperglycemia 
d, Hypertension

Answer 5

a. Peripheral neuropathy

Question 6

Heme is released from damaged RBCs and split into globin and heme by macrophages. Heme is then converted into which of the following by heme oxygenase?

a. Cholic acid
b. Biliverdin
c. Bilirubin
d. urobilinogen

Answer 6

b. Biliverdin

answer C. bilirubin is second in chain

Question 7

A higher than normal back pressure in hepatic veins may lead to the following condition

a. Jaundice
b. Cirrhosis
c. Ascites
d. Diabetes

Answer 7

c. Ascites

Question 8

What will cause a down regulation of receptors?
A. Inactivation of some of the intracellular protein signaling molecules
B. An increase in the target tissue’s responsiveness to the hormones
C. An increase in the number of active receptors
D.stimulating the hormone to induce a greater availability of the receptor

Answer 8

A. Inactivation so some of the intracellular protein signaling molecules