Body Fluids and Circulation ( Composition of Blood, Blood Groups, Coagulation of Blood,....) NEET Questions

Biology - Human Physiology

Body Fluids and Circulation ( Composition of Blood, Blood Groups, Coagulation of Blood,....) MCQ Questions


7.
Plasma is approximately what percentage water?
A.
90-92 percent
B.
98-99 percent
C.
70-75 percent
D.
50-55 percent
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ANSWER :
A. 90-92 percent
8.
Red blood cells are also called:
A.
Thrombocytes
B.
Erythrocytes
C.
Leucocytes
D.
Lymphocytes
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ANSWER :
B. Erythrocytes
9.
Mature mammalian RBCs lack:
A.
Hemoglobin
B.
Cytoplasm
C.
Cell membrane
D.
Nucleus
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ANSWER :
D. Nucleus
10.
The lifespan of human RBCs is approximately:
A.
60 days
B.
30 days
C.
120 days
D.
180 days
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ANSWER :
C. 120 days
11.
Erythropoiesis (formation of RBCs) in adult humans occurs in:
A.
Spleen only
B.
Yellow bone marrow
C.
Red bone marrow
D.
Liver only
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ANSWER :
C. Red bone marrow
12.
Hemoglobin in human RBCs averages approximately:
A.
12-16 g per 100 mL of blood
B.
2-3 g per 100 mL
C.
20-25 g per 100 mL
D.
6-8 g per 100 mL
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ANSWER :
A. 12-16 g per 100 mL of blood