Biology MCQs

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Tartaric acid is a white, crystalline organic acid that occurs naturally in many fruits, most notably in grapes, bananas, and tamarind. Tartaric acid is used in several food products for its sour taste and antioxidant properties. It has a very sour taste and is a key raw material for making wine, where it plays a vital role in maintaining the color, taste, and texture of the product.

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Biologists have been able to demonstrate the hearing and sound sensory mechanism through the acoustico-lateralis system in fishes.

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Anesthesia which allows patients to undergo surgery without the distress and pain they would otherwise experience, has been practiced by man since ancient times. Opium (poppy) is the most ancient source of anesthesia preparations.

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99% of body’s calcium is stored in Bones and teeth. The remainder of the calcium is present in blood, extracellular fluid, muscle, and other tissues. It plays a role in mediating vascular contraction and vasodilation, muscle contraction, nerve transmission, and glandular secretion.

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Color blindness diseases is very rare in women compared to the men affected with the same disorder. Color blindness often happens when someone is not able to distinguish between certain colors.

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Cone cells and Cone cells are one of three types of photoreceptor cells in the retina of the eye. They are responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light.

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In the kingdom of animals, the phylum Chordata includes the classes of Pisces, Amphibia, Reptilia, Aves and Mammalia. These classes have at some stage in their lives shown common characteristics. So, man and frog belong to the same Phylum in the taxonomical level.

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Leukemia, a type of cancer found in your blood and bone marrow. It is caused by the rapid production of abnormal white blood cells. The high number of abnormal white blood cells are not able to fight infection, and they impair the ability of the bone marrow to produce red blood cells and platelets.

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The beak, bill or rostrum is an external anatomical structure of birds that is used for eating and for preening, manipulating objects, killing prey, fighting, probing for food, etc. All beaks are composed of two jaws, generally known as the upper mandible (or maxilla) and lower mandible (or mandible).

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Photosynthesis, process by which green plants and certain other organisms use the chlorophyll and energy of sunlight to convert carbon dioxide and water into the simple sugar glucose.