Entry Test MCQ :: MCAT - SAMPLE PAPER
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31. |
Gaseous exchange in birds occurs at level of |
A. |
Alveoli |
B. |
Air sacs |
C. |
Bronchi |
D. |
Parabronchi |
Answer: Option D
Explanation:
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32. |
An infectious disorder of respiratory system is |
A. |
Cancer |
B. |
Asthma |
C. |
Tuberculosis |
D. |
Emphysema |
Answer: Option C
Explanation:
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33. |
According to cohesion-tension theory, tension is created by |
A. |
Hydrogen bonding |
B. |
Transpiration |
C. |
Adhesion |
D. |
Root prerssure |
Answer: Option B
Explanation:
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34. |
Cuticular transpiration is _______ of total transpiration |
Answer: Option C
Explanation:
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35. |
_______ cells of phloem are directly involved in transport of organic solutes |
A. |
Parenchyma |
B. |
Companion cell |
C. |
Tracheid |
D. |
Sieve element |
Answer: Option D
Explanation:
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36. |
Deoxygenated blood first enters in _____ part in fishes |
A. |
Sinus venosus |
B. |
Right atrium |
C. |
Left atrium |
D. |
Conus arteriosus |
Answer: Option A
Explanation:
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37. |
95% of the cytoplasm of RBCs is |
A. |
Hemoglobin |
B. |
Enzymes |
C. |
Salts |
D. |
Other proteins |
Answer: Option A
Explanation:
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38. |
"lubb" sound is produced due to |
A. |
Opening of inlet valve |
B. |
Closure of inlet valve |
C. |
Opening of outlet valve |
D. |
Closure of outlet valve |
Answer: Option B
Explanation:
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39. |
An antibody is made of _____ polypeptide chains |
Answer: Option D
Explanation:
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40. |
_______ of earth surface is covered with water |
Answer: Option C
Explanation:
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