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Biology questions and answers

Browse questions about Biology, with answers and explanations.

446 questions

Animal Kingdom39 questionsCell Biology79 questionsCirculatory System15 questionsClassification and Scientific Names8 questionsDigestive System16 questionsDiscoveries and Vaccines19 questionsEcology3 questionsEndocrine System8 questionsEnzymes and Hormones16 questionsExcretory System6 questionsHuman Health and Disease45 questionsMicrobiology14 questionsMiscellaneous48 questionsNervous System10 questionsNutrition and Biomolecules17 questionsPlant Diseases1 questionsPlant Kingdom42 questionsPlant Physiology24 questionsReproduction15 questionsRespiration4 questionsScientific Study8 questionsSensory Organs5 questionsSkeletal System4 questions

Questions

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What is the primary function of an artificial kidney (dialysis machine)?

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In the human heart, what is the muscular partition that separates the left and right sides of the heart called?

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In the human circulatory system, what mechanism helps veins maintain one-way flow of blood toward the heart?

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Which component of human blood plays the main role in the clotting process that helps prevent excessive bleeding?

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In the human circulatory system, oxygenated blood returning from the lungs first enters which chamber of the heart?

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The pressure exerted by blood on the walls of arteries when the ventricles contract is called _____.

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Which type of blood cells is primarily responsible for defending the human body against infections?

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In the human body, haemoglobin, the oxygen-carrying respiratory pigment, is primarily present in which type of cell?

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The pressure exerted by blood on the arterial walls when the heart is in its relaxation phase is known as:

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In the human heart, deoxygenated blood returning from the body enters which chamber first?

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When tissue fluid enters the lymphatic vessels, it is called:

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Which of the following statements is correct regarding blood vessels in the human circulatory system?

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The human heart has separate chambers primarily to achieve which of the following functions?

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Which statement about haemoglobin in humans is correct? I. It acts as the respiratory pigment. II. It is responsible for blood clotting.

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What is the correct order in which blood flows through the chambers of the human heart?

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Consider the following statements regarding the human eye: 1. The retina controls the size of the pupil and regulates the amount of light entering…

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Which type of muscles do the uterus, iris of the eye, and bronchi contain?

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What is the approximate three-dimensional shape of the human eyeball?

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Which sense do virtual-reality displays primarily stimulate?

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In plant cell, _____ are primarily organelles in which materials such as starch, oils and protein granules are stored.

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Which of the following is NOT a type of chromosome, on the basis of the location of the centromere?

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