R4RIN – MCQs, Mock Tests | Biology Biology MCQS[NEET-2021 to 2022]-Human physiology

Which of the following is essential for blood clotting?

1. RBC
2. WBC
3. Blood platelets
4. Lymph

✅ Correct Answer: 3

Short sightedness is due to

1. Weaker muscles
2. Weakening of the retina
3. Elongation of eye balls
4. Shifting of the iris

✅ Correct Answer: 3

A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the

1. Pupil
2. Cornea
3. Iris
4. Choroid

✅ Correct Answer: 3

A colour blind person has difficulty in distinguishing between which colours?

1. Black and blue
2. White and Yellow
3. Green and violet
4. Green and Red

✅ Correct Answer: 4

What is the maximum limit of sound intensity in decibel units which a person cannot hear?

1. 65
2. 75
3. 85
4. 95

✅ Correct Answer: 3

There are approximately..... muscles in human body

1. 206
2. 400
3. 500
4. 700

✅ Correct Answer: 4

inside the body, blood does not coagulate due to the presence of

1. Fibrin
2. Heparin
3. Haemoglobin
4. Thromoblastin

✅ Correct Answer: 2

The saliva helps in the digestion of

1. Fats
2. Protein
3. Starch
4. None of the above

✅ Correct Answer: 3

The normal temperature of human body on the Kelvin scale is

1. 250
2. 270
3. 299
4. 310

✅ Correct Answer: 4

Liver the largest gland is associated with several functions. Which one of the following is stated incorrectly?

1. Stores glucose as glycogen
2. Manufactures bile, converts the amino groups to urea
3. Makes all the cholesterol that human body needs
4. Secrete hormone called gastric

✅ Correct Answer: 4

Which one of the following statement is not correct about intestinal villi?

1. A multitudinous finger-like projections having many microvilli
2. Increase the internal surface area of the intestinal wall.
3. Supplied with capillaries and the lacteal vessels
4. Participate only in digestion of fats

✅ Correct Answer: 4

The following list describes four major digestive enzymes. Which one of the following is incorrect?

1. Salivary amylase - Salivary glands - Mouth
2. Pepsin - Gastric glands - Stomach
3. Nuclease - Small intestine - Stomach
4. Lipase - Pancreas - Small intestine

✅ Correct Answer: 3

Carrier ions like Na facilitate the absorption of substances like

1. Fructose and some amino acids
2. Amino acids and glucose
3. Glucose and fatty acids
4. Fatty acids and glycerol

✅ Correct Answer: 1

If for some reason our goblet cells are non-functional this will adversely affect

1. Smooth movement of food down the intestine
2. Production of somatostatin
3. Secretion of sebum from the sebaceous glands
4. Maturation of sperms

✅ Correct Answer: 1

Bile contribution to digestion is

1. Nucleic acid metabolism
2. Phagocytosis
3. Emulsification of dietary lipids
4. Carbohydrate digestion

✅ Correct Answer: 3