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1721. A person with AB blood group is sometimes called a universal recipient because of the
A. presence of antibodies in his blood
B. lack of antibodies in his blood
C. lack of antigen in his blood
D. lack of both antigens and antibodies in his blood
Explanation:
1722. How much blood does an average adult have in the body ?
A. 3-4 litres
B. 4-5 litres
C. 5-6 litres
D. 6-7 litres
Explanation:
1723. Any foreign particle which stimulates the formation of antibodies is called
A. histone
B. antigen
C. receptor
D. antibiotic
Explanation:
1724. Human body needs a constant supply of proteins to survive. The first part of the digestive system to begin digesting proteins is
A. mouth
B. stomach
C. small intestine
D. large intestine
Explanation:
1725. The image formed on the retina of the eye is
A. real and upright
B. real and inverted
C. virtual and upright
D. real and enlarged
Explanation:
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