Question

Proteins are composed of which of these monomers?

a) amino acids

b) glucose

c) fatty acids

d) nucleotides

e) glycerol

The source of glucose in our diet is

A Starch

B Sucrose, and other disaccharides

C Lactose

D Glucose and other monosaccharides

E all of the above

Which one of the following carbohydrates is a ketose sugar?

A. Galactose

B. Fructose

C. Glucose

D. Mannose

E. Glyceraldehyde

Animals cannot metabolize cellulose for which of the following reasons?

A.. Cellulose is insoluble.

B. They do not commonly consume cellulose.

C. They do not have an enzyme to hydrolyze the beta-1,4-glycosidic bonds (linkages).

D. They do not have an enzyme to hydrolyze the branches.

In amylopectin, the glucose molecules are connected by

A. beta-1,4-glycosidic bonds

B. alpha-1,6-glycosidic bonds

C. alpha-1,4-glycosidic bonds

D. alpha-1,4-glycosidic bonds and alpha-1,6-glycosidic bonds

Which of these statements about galactose is FALSE?

Galactose

A. is an aldohexose that occurs in the free form in nature.

B. is obtained as a hydrolysis product of the disaccharide lactose, a sugar found in milk and milk products.

C is important in the cellular membranes of the brain and nervous system.

D. differs from D-glucose only in the arrangement of the OH group on carbon 4.

E) none of the above are false