Biology MCQs

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2 ureters are present. One from each kidney. The upper half is located in the abdomen and the lower half is located in the pelvic region.

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Cystic Fibrosis is an Autosomal recessive disorder that causes severe damage to the lungs, digestive system, and other organs in the body

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Both polio and chicken pox are caused by virus. Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the poliovirus; while, Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).

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A typical adult human stomach will secrete about 1.5 liters of gastric acid daily. The best-known component of gastric juice is hydrochloric acid, the secretory product of the parietal, or oxyntic cell. It is known that the capacity of the stomach to secrete HCl is almost linearly related to parietal cell numbers.

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Microcytic anaemia: anemia characterized by small red blood cells, due to deficiency of iron; Pernicious anaemia: body does not make enough red blood cells due to lack of vitamin B12; Goitre: swelling of the neck or larynx resulting from iodine deficiency; and Pellagra: chronic lack of niacin (vitamin B3). It is also called 3-D disease.

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A seed can germinate in the absence of adequate light. It’s only photoblastic seeds which need light exposure for germination such lettuce, maize, etc. Small seeds generally germinate better in light than in darkness, while large seeds do not exhibit a difference in germination between these two conditions (Milberg et al. 2000. 2000. Large seeded species are less dependent on light for germination than small-seeded ones.

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Blood group AB individuals are universally known as recipients because they can receive blood from any group, this is due to the presence of both A and B antigens on the surface of their RBC’s and an absence of antibodies against either A or B antigen in the plasma. However, they can only donate blood to individuals of the same AB blood group.

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Thymosin is the hormone of the thymus. It stimulates the development of disease-fighting T cells. Throughout our childhood years, white blood cells called lymphocytes pass through the thymus, where they are transformed into T cells. Once T cells have fully matured in the thymus, they migrate to the lymph nodes throughout the body, where they aid the immune system in fighting disease.

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The thymus is a specialized primary lymphoid organ of the immune system. Thymosin hormones are typically produced by the thymus gland and trigger the creation of T-cells, which are used by the immune system to fight disease. The thymus gland is only active until puberty beyond which it starts gradually degenerating with age.

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Potassium Deficiency (Hypokalemia) is characterized by a blood potassium level below 3.5 mmol per liter. Instead, it occurs when your body suddenly loses a lot of fluid. Common causes include chronic vomiting, diarrhea, excessive sweating and blood loss.