Biology MCQS

401. Which combination of rennin’s substrate and site of action is correct?
A. Mouth-starch
B. Stomach-Fat
(C. Stomach-Casein)
D. Small intestine -Casein

402. The matrix of blood is known as:
(A. Plasma)
B. Serum
C. RBC and WBC
D. WBC and platelets

403. The percentage of formed elements in the blood is:
A. 45%
B. 50%
(C. 55%)
D. 60%

404. The lifespan of RBC:
A. 100 Days
B. 110 Days
C. 120 Days
(D. 130 Days)

405. _ is a scientific word for human beings?
A. Animals
(B. Homo sapiens)
C. Omnivore
D. Consumer

406. Lactometer is used for__________?
A. Ship
(B. Milk)
C. Honey
D. None

407. Enzyme is_____________?
(A. Biocatalyst)
B. Hormone
C. Gland
D. None of these

408. Exact replica of chromosome refers to _?
A. Chromatid
B. Centromere
C. Kinetochore
(D. Arms)

409. Density gradient centrifugation separates the materials on the basis of__________?
A. Size alone
B. Density alone
(C. Both a & b)
D. Velocity of movement

410. Who is Called the Father of Demography?
A. ALAN Turing
B. John Dalton
C. Charles Babbage
(D. IBN KHALDUN)