General Science – Biology MCQs

176. A four chambered heart is found in which of the following?

(A) mammals only
(B) mammals and fish
(C) mammals & Birds
(D) mammals and Amphibians

Correct Answer: (C) mammals & Birds

Answer Explanation:

Archosaurs (crocodilians and birds) and mammals show complete separation of the heart into two pumps, for a total of four heart chambers;

177. What would be the percentage of Glucose in the Urine of a healthy person?

(A) less than 1%
(B) More than 1%
(C) More than 0.1%
(D) 0%

Correct Answer: (D) 0%

178. Which among the following is not an Enzyme?

(A) Gastrin
(B) Ptyalin
(C) Pepsin
(D) Rennin

Correct Answer: (A) Gastrin

Answer Explanation:

Gastrin, is a hormone, stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility

179. The blood pressure is denoted as following?

(A) Systolic Pressure / Diastolic Pressure
(B) Diastolic Pressure / Systolic Pressure
(C) Venous Pressure / Systolic Pressure
(D) Systolic Pressure / Pulse Pressure

Correct Answer: (A) Systolic Pressure / Diastolic Pressure

Answer Explanation:

Blood Pressure is expressed in two numbers. The higher number is known as Systolic Pressure, or the amount of force (as measured in millimetres of mercury) that is exerted against the artery walls during a heartbeat (contraction). The lower number in the Diastolic pressure, which does the force exist while the heart is resting between beats.

180. Who among the following proved that Bacteria don’t originate by spontaneous generation?

(A) Redi
(B) Pasteur
(C) Hooke
(D) Shleiden

Correct Answer: (B) Pasteur

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