Biology MCQs

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Deficiency of Vitamin D can lead to a loss of bone density, which can result in osteoporosis and fractures (broken bones). In children the deficient of Vitamin D can cause rickets.

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Enterobius vermicularis which affect the caecum and vermiform appendix is commonly called as Pinworm. Pinworms are tiny, narrow worms and are white in color and less than a half-inch long.

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Vitamin A, D & C are respectively called as Retinol, Calciferol and Ascorbic Acid. Vitamin A is essential for good vision, a healthy immune system, and cell growth. Vitamin D is a fat-soluble vitamin whereas Vitamin C is a water-soluble vitamin which is found in many foods, particularly fruits and vegetables.

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The hard part of a stem of a plant is because of Xylem. Stem supports leaves, flowers and fruits. It also transports fluids between the roots and the shoots in the xylem and phloem, stores nutrients, and produces new living tissue.

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Christian Gottfried Ehrenberg was a was one of the most famous and productive scientists of his time. He was a German naturalist, zoologist, comparative anatomist, geologist, and microscopist. He coined the term Bacterium.

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A treatment with abscisic acid would prevent water loss from the plant leaves, by reducing transpiration, in times of low water availability.

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The monocarpic plants produce flowers only once in lifetime. Monocarpic plants are those that flower, set seeds and then die.

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A health problem which is characterized by inability of the bone marrow to produce the red blood cells is placed in Aplastic Anemia. It causes a deficiency of all blood cell types: red blood cells, white blood cells, and also platelets.

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The Islets of Langerhans are the endocrine cells of the pancreas that produce and secrete hormones such as insulin and glucagon into the bloodstream. The pancreatic hormones, insulin and glucagon, work together to maintain the proper level of sugar (glucose) in the blood.

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The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes.