Biology MCQs

31. What disease is caused by Corynebacterium?
[A] Whooping cough
[B] Tuberculosis
[C] Diphtheria
[D] Gonorrhoea

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32. What is required for nitrogen fixation by Rhizobium?
[A] Potassium
[B] Phosphorus
[C] Nitrate
[D] Sodium

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33. Bioethanol is denatured alcohol that is also called __
[A] Ethylene
[B] Methylated spirit
[C] Ethylene glycol
[D] Methylene

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34. Which protein helps in DNA winding?
[A] Helicase
[B] Histone
[C] Lipase
[D] Cellulase

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35. In coriander, the useful parts are
____:
[A] Leaves & flowers
[B] Flowers & dried fruits
[C] Roots & leaves
[D] Leaves & dried fruits

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36. What is Blood?
[A] Muscular tissue
[B] Epithelial tissue
[C] Reproductive tissue
[D] Connective tissue

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37. Gastric juice has a pH of about ____:
[A] 1.5 to 3.5
[B] 5 to 6
[C] 6 to 8
[D] 8.5 to 9.5

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38. An Antigen is ____:
[A] The result of Antibody
[B] The stimulus for Antibody formation
[C] The opposite of Antibody
[D] The residue of an Antibody

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39. In which of the following parts of the human digestive system is the digestion of food completed?
[A] Small intestine
[B] Large intestine
[C] Mouth
[D] Stomach

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40. Haemoglobin has highest affinity for ____:
[A] Carbon monoxide
[B] Nitrogen
[C] Oxygen
[D] Carbon dioxide

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