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Important Questions on Body Fluids and Circulation

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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 45
Read the following statements carefully with respect to the coagulation of blood and choose the option that depicts the two incorrect ones:

(A) An enzyme complex thrombokinase is required for the conversion of prothrombin into thrombin.

(B) An injury stimulates RBCs in the blood to release certain factors which activate the mechanism of coagulation.

(C) K+ ions play a very important role in clotting.

(D) Thrombin helps in the formation of fibrin from fibrinogen.
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 46
In blood clotting, fibrins are formed from inactive fibrinogen by the enzyme
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 47
Choose the incorrect match with respect to disorder and their associated clinical condition.
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 48
The main difference in the structure of arteries and veins is :-
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 49
Which one of the following is agranulocyte ?
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 50
The decreasing percentage of proportions of leucocytes in human blood is:
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 51
Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 52

Examine the diagrammatic representation of standard ECG. Select an option with correct matching.
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