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Entry Test MCQ :: MCAT - SAMPLE PAPER


31.  Gaseous exchange in birds occurs at level of
A. Alveoli B. Air sacs
C. Bronchi D. Parabronchi

32.  An infectious disorder of respiratory system is
A. Cancer B. Asthma
C. Tuberculosis D. Emphysema

33.  According to cohesion-tension theory, tension is created by
A. Hydrogen bonding B. Transpiration
C. Adhesion D. Root prerssure

34.  Cuticular transpiration is _______ of total transpiration
A. 1-2% B. 3-4%
C. 5-7% D. 90%

35.  _______ cells of phloem are directly involved in transport of organic solutes
A. Parenchyma B. Companion cell
C. Tracheid D. Sieve element

36.  Deoxygenated blood first enters in _____ part in fishes
A. Sinus venosus B. Right atrium
C. Left atrium D. Conus arteriosus

37.  95% of the cytoplasm of RBCs is
A. Hemoglobin B. Enzymes
C. Salts D. Other proteins

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

39.  An antibody is made of _____ polypeptide chains
A. 1 B. 2
C. 3 D. 4

40.  _______ of earth surface is covered with water
A. 10% B. 30%
C. 75% D. 90%




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