Deck 9 (161-180)

Question 1

161. The following are the monomers of protein:

a. nucleotides
b. peptides
c. amino acids
d. monosaccharides

Answer 1

amino acids

Question 2

162. Unlike those of prokaryotes, eukaryotic cell walls are composed of:

a. glycolipids and protein fibres
b. chitin
c. cellulose fibres
d. proteins and histones

Answer 2

cellulose fibres

Question 3

163. Chymosin is ….

a. acidic chyme
b. pre-digested food
c. the enzyme of chyme
d. enzyme of the gastric juice

Answer 3

enzyme of the gastric juice

Question 4

164. Substrate function in a cell is fulfilled by:

a. enzymes
b. nucleic acids
c. colloids
d. fatty acids

Answer 4

colloids

Question 5

165. The following are monomers of nucleic acids:

a. amino acids
b. pentoses
c. adenine, guanine, thymine, cytosine
d. nucleotides

Answer 5

nucleotides

Question 6

166. A gram-negative bacterium is enclosed by a:

a. single thick wall
b. single thin wall
c. double thick wall
d. double thin wall

Answer 6

double thin wall

Question 7

167. The absorption of nutrients takes place mainly in ?

Answer 7

the small intestine

Question 8

168. The average representation of salt & water in the cell is ?

Answer 8

60 - 90%

Question 9

169. Chemically, nucleic acids are:

a. polypeptides
b. macromolecules
c. pentoses
d. monomers

Answer 9

macromolecules

Question 10

170. The cytoplasm of a bacterium is:

a. supported by the cytoskeleton
b. supported by microtubules
c. supported by keratin
d. not supported by any internal structure

Answer 10

d. not supported by any internal structure

(actually by bacterial cell wall)

Question 11

171. The digestion of proteins takes place mainly in ?

Answer 11

stomach

Question 12

172. The average representation of organic substances in the cell is:

a. 10-20%
b. 10-40%
c. 50-55%
d. 25-65%

Answer 12

b. 10-40%

Question 13

173. Fats:

a. catalyse chemical rxns in the cell
b. are the main constituent of antibodies
c. are the most economical sources of energy
d. are not part of biomembranes

Answer 13

c. are the most economical sources of energy

Question 14

174. The oldest fossil found so far date back to the:

a. Cambrian Period
b. Phanerozoic Era
c. Archean Era
d. Proterozoic Era

Answer 14

Archean Era

Question 15

175. The digestion of fats takes place mainly in ?

Answer 15

small intestine

Question 16

176. 65% of the cell is represented by ?

Answer 16

water

Question 17

177. Cytokinesis:

a. is a period of growth of the cell
b. is a science that examines shape and structure of cells
c. is a division of the mother cell into two independent daughter cells
d. begins and ends by the division of nucleus into two daughter ones

Answer 17

is a division of the mother cell into two independent daughter cells

Question 18

178. Multicellular fossils appear at the beginning of the —- era?

a. Proterozoic Era
b. Phanerozoic Era
c. Precambrian Period
d. Cambrian Period

Answer 18

Phanerozoic Era

Question 19

179. The following enzymes fully participate in digestion in the small intestine of man:

a. lipase
b. trypsin, which comes into the duodenum in form of inactive pepsinogen
c. pepsin, which digests proteins to peptides & amino acids
d. ptyalin, which digests polysaccharides to simple sugars

Answer 19

a. lipase

Question 20

180. Proportional representation of carbohydrates in the cell is ?

Answer 20

9%