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1026. The part of the cell which is essential for protein synthesis is :
A. chloroplast
B. ribosomes
C. Golgi bodies
D. chromosomes
Explanation:
1027. Which of the following is/are true of enzymes ?1. Proteinaceous in nature2. Specific in nature3. Converted in chemical reactions 4. Act on the substrate at any temperature
A. 1and 2
B. 1, 2 and 4
C. 1, 2 and 3
D. 2 and 4
Explanation:
1028. Which of the following statements is/are true of white blood corpuscles ?1. They are irregular structures2. They are nucleated3. They are manufactured in the lymph and spleen4. They live for about four months
A. 1, 2 and 3
B. 1, 3 and 4
C. 3 and 4
D. 1 and 3
Explanation:
1029. Which of the following is a physical basis of life ?
A. Mitochondria
B. Ribosome
C. Protoplasm
D. Nucleus
Explanation:
1030. The oral polio vaccine was discovered by :
A. Louis Pasteur
B. Robert Koch
C. Jonas Salk
D. Alexander Flemming
Explanation:
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