Free Human Body and Health MCQs with Answers

201. Chiken egg is composed of _______ cells?

• A. One cell
• B. 100 cells
• C. 1000 cells
• D. One million cells

Explanation: The chicken ovum, commonly called the egg cell, is a single cell; the egg white and shell are surrounding non-cellular structures. After fertilization, the single cell begins dividing into many cells.

202. Which of the following vitamin is known as Cobalamin?

• A. vitamin B-1
• B. vitamin B-3
• C. vitamin B-9
• D. vitamin B-12Biological Sciences

Explanation: Cobalamin is the chemical name for vitamin B12, which is essential for red-blood-cell formation and normal nerve function. The other listed vitamins belong to different B groups.

203. When WBCs greatly increased in number, they cause a disease called?

• A. Anaemia
• B. Leukaemia
• C. Haemophilia
• D. Diarrhoea

Explanation: Leukaemia is a cancer of blood-forming tissues that causes abnormal production and accumulation of white blood cells. Anaemia concerns reduced red blood cells or haemoglobin, while haemophilia affects clotting.

204. Spinal card controls all ___________?

• A. Sexual activities
• B. Thinking activities
• C. Reflex activities
• D. none

Explanation: The spinal cord coordinates many rapid, automatic responses called reflexes, such as withdrawing the hand from a hot object. Thinking and conscious control are primarily functions of the brain.

205. The back thigh muscles are also called__________?

• A. Gluteal
• B. Hamstring
• C. Sartorious
• D. Deltoid

Explanation: The hamstrings are the group of muscles at the back of the thigh that help bend the knee and extend the hip. The gluteal muscles are located mainly in the buttocks.

206. Saliva helps in the digestion of?

• A. Starch
• B. Proteins
• C. Lipids
• D. Fats

Explanation: Salivary amylase begins the digestion of starch in the mouth by breaking it into smaller carbohydrates. Protein and fat digestion occurs mainly later in the stomach and small intestine.

207. H5N1 virus is caused of_______?

• A. AIDs
• B. fever
• C. Bird flu
• D. non

Explanation: H5N1 is a strain of influenza A virus associated with avian influenza, commonly called bird flu. AIDS is caused by HIV, not H5N1.

208. Blood glucose level is raised by the following except __________?

• A. Carbohydrates
• B. Insulin
• C. Cholesterol
• D. Epinephrine

Explanation: Insulin lowers blood glucose by helping cells absorb glucose and by promoting its storage as glycogen. Carbohydrates and epinephrine generally raise blood glucose, while cholesterol is not the intended direct regulator in this list.

209. Which among the following lens is used to correct Presbyopia?

• A. Bifocal
• B. Convex
• C. Concave
• D. Cylindrical

Explanation: Presbyopia is the age-related loss of near focusing, so bifocal lenses provide separate correction for distant and near vision. Concave lenses correct myopia, while cylindrical lenses correct astigmatism.

210. Fat is digested in which part of body?

• A. Small intestine
• B. Mouth
• C. Large intestine
• D. Spleen

Explanation: Most fat digestion takes place in the small intestine, where bile emulsifies fats and pancreatic lipase breaks them into absorbable fatty acids and related products. The large intestine mainly absorbs water.