Respiration and Circulation — Practice Quiz
Maharashtra Board · Class 12 · Biology
Try a 4-question quiz on Respiration and Circulation for Maharashtra Board Class 12 Biology: tap an answer to check it and see why.
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Quick Quiz: Respiration and Circulation
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What is the primary function of alveoli in the lungs?
How many chambers does a human heart have?
During inspiration, the diaphragm moves:
Which blood cells are responsible for oxygen transport?
Sample Questions
Which of the following are functions of blood? (Select all correct answers)
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Transport of oxygen and nutrients, Maintenance of body temperature, Protection against infections, Regulation of pH
Blood performs multiple functions including transport, homeostasis, and protection. While hormones travel in blood, they are not produced by blood itself.
What is the normal tidal volume in humans?
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500 ml
Tidal volume is the volume of air inspired or expired during normal quiet breathing, which is approximately 500 ml in a healthy adult.
Which valve prevents backflow of blood from the left ventricle to the left atrium?
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Bicuspid (Mitral) valve
The bicuspid or mitral valve is located between the left atrium and left ventricle, preventing backflow of blood during ventricular contraction.
Which of the following are components of blood plasma? (Select all correct answers)
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Water, Proteins, Glucose, Hormones
Plasma is the liquid component of blood containing water (90%), proteins, nutrients like glucose, hormones, and other dissolved substances. Blood cells are not part of plasma.
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