C:-Selection of two extreme phenotypes
D:-None of these
Correct Answer:- Option-A

Question27:-If the average of a series of values is 10 and their variance is 9, then
the coefficient of variation ( = the ratio standard deviation / average ) is

A:-0.4
B:-0.3
C:-0.2
D:-0.1
Correct Answer:- Option-B

Question28:-lf a series of values consists of 31 numbers, then, for finding the
median, we ordered the series ascending and we use

A:-The 16th value in the ordered series

B:-The mean between the 15th and 16th values
C:-The mean between the 17th and 16th values
D:-The 15th value in the ordered series

Correct Answer:- Option-A

Question29:-Which among the following is the first trigger for secretion of gastric
juice?

A:-Gastrin secreted by G cells in the antrum
B:-Histamine secreted by enterochromaffin-like-cells
C:-Vagal input from Dorsal vagal complex
D:-Bombesin from enteric nerve endings

Correct Answer:- Option-C

Question30:-Histotoxic hypoxia due to deficiency in production of cytochromes is
caused by

A:-Inhalation or ingestion of cyanide compounds

B:-Inhalation of carbon monoxide

C:-Cheyne-Stockes breathing

D:-Toxin produced by strains of bacteria called Corynebacterium diphtheriae
Correct Answer:- Option-A

Question31:-Ildentify the major transport proteins associated with urine formation
found in the thick ascending limb of Loop of Henle

A:-Na/K/2Cl co-transporter, Na/H exchanger, ॥ channel
B:-Na/glucose co-transporter, nat /P exchanger, «+ channel
C:-nat/P exchanger, Cl/base exchanger, Na/lactate co-transporter
D:-Na/K co-transporter, Na/Cl co-transporter, na+Channel