Tag: biology

Questions Related to biology

Match the columns and find the correct choice.

a Kupffer's cells p Islet of Langerhans
b $\beta$-cells q Liver sinusoids
c Brush border cells r Thyroid gland
d Paneth cells s Proximal convoluted tubule
t Small intestine
biology digestive system of human digestive glands liver pancreas

  1. a-s, b-t, c-p, d-q

  2. a-r, b-, c-s, d-q

  3. a-r, b-t, c-s, d-p

  4. a-q, b-p, c-s, d-t

Show answer
Correct Option: D

Which one is both exocrine ad endocrine?

biology digestive system of human digestive glands liver pancreas

  1. Liver

  2. Pineal

  3. Adrenal

  4. Pancreas

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Correct Option: D

Which one of the following is not secreted by pancreas

biology digestive system of human digestive glands liver pancreas

  1. Insulin

  2. Glucagon

  3. Renin

  4. Somatostatin

Show answer
Correct Option: C

Ammonia is formed inside

biology digestive system of human digestive glands liver pancreas

  1. Small intestine

  2. Stomach

  3. Large intestine

  4. Liver

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Correct Option: D

DNA-ase and RNA-ase are enzymes produced by

biology digestive system of human digestive glands liver pancreas

  1. Salivary glands

  2. Pancreas

  3. Stomach

  4. Intestine

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Correct Option: B

Largest gland in human body is

biology digestive system of human digestive glands liver pancreas

  1. Liver

  2. Pancreas

  3. Pituitary

  4. Thyroid

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Correct Option: A

Islets of Langerhans are found in

biology digestive system of human digestive glands liver pancreas

  1. Anterior pituitary

  2. Kidney cortex

  3. Spleen

  4. Endocrine pancreas

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Correct Option: D

Number of liver lobes is

biology digestive system of human digestive glands liver pancreas

  1. 4

  2. 5

  3. 6

  4. 7

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Correct Option: A

Growth hormone is secreted by

biology digestive system of human digestive glands liver pancreas

  1. Acidophilic $\alpha$ - cells

  2. Acidophilic $\beta$ - cells

  3. Basophilic $\alpha$ - cells

  4. Basophilic $\beta$ - cells

Show answer
Correct Option: A
Explanation:
Pituitary gland has two parts; adenohypophysis and neurohypophysis. Adenohypophysis has two types of cells, chromophobe cells and chromophil cells. Chromophil cells are divided into acidophilic or alpha cells and basophilic or beta cells depending upon whether they stain with acidic or basic dyes.
Growth hormone (GH) is secreted from acidophilic cells i.e. alpha cells (α) of anterior pituitary. It stimulates body growth and metabolism.
So, the correct answer is 'Acidophilic αα - cells'.

Alloxan treatment destroys 

biology digestive system of human digestive glands liver pancreas

  1. STH cells

  2. Sertoli cells

  3. Leydig's cells

  4. $\beta$- cells of islets of Langerhans

Show answer
Correct Option: D
Explanation:
A. STH or somatotropin hormone is known as growth hormone and stimulates body growth and carbohydrate, protein, fat metabolism.
B. Sertoli cells are part of seminiferous tubules and help in spermatogenesis (production of sperms from germ cells) as they provide nourishment to the developing sperms.
C. Leydig cells, also known as interstitial cells are present in the testis near seminiferous tubules. They secrete testosterone hormone which helps in the development of secondary sexual characteristics in males.
D. ββ-cells of islets of Langerhans are part of pancreas and secrete insulin hormone which regulate blood glucose levels.
Alloxan is a toxic analogue of glucose which destroys insulin producing cells of pancreas i.e. ββ-cells of islets of Langerhans.
So, the correct answer is 'ββ-cells of islets of Langerhans'.