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1021. A scientist was treating pathogenic bacteria with different chemicals to see which of them would stop the activity of their ribosomes. Which one of the following processes is the target ?
A. DNA synthesis
B. Digestion of proteins
C. Protein synthesis
D. Production of ATP
Explanation:
1022. The blind spot in the eye : 1. is where the nerve fibres leave the eye2. has no light sensitive cells3. is part of the fovea4. is well developed in aged people
A. 1 and 4
B. 2 and 4
C. 2 and 3
D. 1 and 2
Explanation:
1023. The heart pumps blood to the pulmonary and aortic arches. For this to happen, the four chambers of the heart have to contract in a definite sequence. Wheat is the sequence in which the contraction takes place ?1. Left ventricle2. Right auricle3. Right ventricle4. Left auricle
A. 2, 4, 3, 1
B. 1, 3, 2, 4
C. 1, 4, 3, 2
D. 4, 2, 3, 1
Explanation:
1024. Which of the following has the least pentrating power ?
A. Alpha particles
B. Beta particles
C. Gamma rays
D. All have the same pentrating power.
Explanation:
1025. Short sightedness is due to :
A. shifting of the iris
B. weaker muscles
C. elongation of eye balls
D. weakening of the retina
Explanation:
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