PRELIM - Carbohydrate chemistry/metabolism

Question 1

a D glucose and a L glucose are

a. Anomers
b. Epimers
c. Tautomers
d. Enantiomers

Answer 1

d. Enantiomers

Question 2

This sugar derivative is produced by the reduction of the carbonyl group on a monosaccaharide

a. sorbitol
b. glucoronic acid
c. glycoside
d. gluconic acid

Answer 2

c. glycoside

Question 3

Of the following hexoses, which is a constituent of glycolipids and
glycoproteins?
a. glucose
b. galactose
c. fructose
d. xylulose

Answer 3

b. galactose

Question 4

Which of the following glycosaminoglycans are found in large amount in
cartilages
a. Dermatan sulfate
b. Keratan sulfate
c. Choindroitin sulfate
d. Heparan sulfate
e. Hyaluronic acid

Answer 4

c. Choindroitin sulfate

Question 5

The compound that is the probable causative factor in the development of
cataract in patients with diabetes mellitus
a. Dulcitol
b. Fructose 1-phosphate
c. galactose 1-phosphate
d. glucose 1-phosphate
e. sorbitol

Answer 5

e. sorbitol

Question 6

The glycogen storage disease resulting from the deficiency of muscle phosphorylase

a. Pompe’s disease
b. McArdle’s disease
c. Her’s disease
d. Forbe’s disease
e. Andersen’s disease

Answer 6

b. McArdle’s disease

Question 7

What is the major energy source for spermatozoa in seminal fluid?

a. Fructose
b. galactose
c. glucose
d. ketone bodies
e. xylulose

Answer 7

a. Fructose

Question 8

A patient is diagnosed as having von Gierke’s disease is likely to exhibit which of the following clinical manifestations

a. an enlarged liver
b. hyperglycemia
c. hypolipidemia
d. hypouricemia

Answer 8

a. an enlarged liver

Question 9

This enzyme is common to both glycolysis and gluconeogenesis

a. Glyceraldehyde 3-phosphate dehydrogenase
b. glucose 6-phosphatase
c. pyruvate kinase
d. pyruvate carboxylase

Answer 9

c. pyruvate kinase

Question 10

In humans, liver glycogen stores are adequate up to how many hours without support from gluconeogenesis?

a. 4 hours
b. 12 hours
c. 24 hours
d. 48 hours

Answer 10

b. 12 hours