IGCSE O Level Biology Practice Test 97

Double circulation in mammals Quiz Questions and Answers PDF Download - 97

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Double circulation in mammals Questions and Answers PDF Download: MCQ 97

MCQ: 481

Pulmonary circulation links

blood from pulmonary arteries to pulmonary veins
blood from pulmonary veins to pulmonary arteries
blood from lungs to heart
blood in closed circulation system

MCQ: 482

All is true for resting organisms, but,

no energy is lost in sleep
sleeping requires food
organisms continue growth in sleep
organisms' medulla keeps working even in sleep

MCQ: 483

Total cell count of human body is

60, 000 billion cells
6000 billion cells
600, 000 billion cells
varies with age

MCQ: 484

Metabolism refers to the

anabolic activities
catabolic activities
respiratory activities
both A and B

MCQ: 485

Protein essential for clotting of blood is

albumins
fibrinogen
globulins
lymph

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