31. Which one of the following chemicals is associated with muscle fatigue?

1. Uric acid
2. Acetic acid
3. Pyruvic acid
4. Lactic acid

Option “4” is correct.
Muscle fatigue refers to the decline in muscle force generated over sustained periods of activity. Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue.
32. Oxyntic cell is meant for the secretion of –

1. Pepsin
2. Enterokinase
3. Hydrochloric acid
4. Lactic acid

Option “3” is correct.
Parietal cells (also known as oxyntic cells), are the epithelial cells that secrete hydrochloric (HCl) and intrinsic factor. These cells are located in the gastric glands found in the stomach.
33. Which is the anti-coagulant substance in blood?

1. Fibrinogen
2. Heparin
3. Thrombin
4. Globin

Option “2” is correct.
Heparin is also known as unfractionated heparin, is medication which is used as an anticoagulant.
34. Which one of the following cells produce antibodies?

1. Eosinophil
2. Monocyte
3. Basophil
4. Lymphocytes

Option “4” is correct.
Antibodies are produced by specialized white blood cells called lymphocytes.
35. Arthritis is caused by the deposition of which “of the following” in the joints of the body?

1. Urea
2. Uric acid
3. Albumin
4. Cholesterol

Option “2” is correct.
Arthritis is caused by deposition of uric acid crystals (mono-sodium urate) in joints and fluids within the body gout, is a painful form of arthritis.
36. Which of the following parasites is responsible for 65% of the cases of malaria in India?

1. P. malariae
2. P. vivax
3. P. falciparum
4. P. Ovale

Option “2” is correct.
Plasmodium vivax is a protozoan parasite and a human pathogen, the most frequent and widely distributed cause of recurring malaria. P. vivax is one of the five species of malaria parasites that is responsible for 65% cases of malaria in India.
37. The radio isotope used in the detection of cancer is-

1. Cobalt – 60
2. Cesium-28
3. Sodium – 24
4. Carbon – 14

Option “1” is correct.
Cobalt-60 is used to treat cancer and carbon -14 is used to date organic material. Arsenic -74 tracer is used to detect the presence of tumours, Sodium -24 tracer is used to detect the presence of blood clots and Iodine-131 tracer is used to study the activity of the thyroid gland.
38. The poison of honey bee is?

1. Acid
2. Saltish
3. Alkaline
4. Vitamin

Option “1” is correct.
Bee stings differ from insect bites, and the venom or toxin of stinging insects is quite different. In particular, bee stings are acidic, whereas wasp stings are alkali, so the body’s reaction to a bee sting may 8be very different than to that of a wasp sting.
39. Which of the following increases the rate of heart beat?

1. Peripheral nerves
2. Sympathetic nerves
3. Parasympathetic nerves
4. Cranial nerves

Option “2” is correct.
The sympathetic nervous system (SNS) controls the body’s responses to a perceived threat and is responsible for the “fight or flight” response. Sympathetic nerve increases rate of heart beat.
40. The deficiency of Niacin-a vitamin of B complex group causes the disease ________

1. Marasmus
2. Pellagra
3. Rickets
4. Night-blindness

Option “2” is correct.
A vitamin B3 niacin deficiency is attributed to causing the disease called pellagra, which is usually seen in poverty stricken areas or in those with alcoholism. Pellagra symptoms include weak muscles, digestive problems, and skin inflammation and irritation.
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