Tag: bio-chemistry

Questions Related to bio-chemistry

Liver is called the reticular gland because

bio-chemistry digestion liver functions of the liver secretory organs

  1. The shape is reticular

  2. It contains reticular tissue

  3. Lobules branches and anastomose with one another to form a network

  4. Hepatic duct and cystic duct unite to form the bile duct

Show answer
Correct Option: B
Explanation:

  • The liver is an organ that is present on the right side of the stomach.
  • Liver tissue is made up of lots of smaller units of liver cells called lobules. Many canals carrying blood and bile run between the liver cells. 
  •  Reticular fibre is a type of fibre in connective tissue. It is composed of type III collagen secreted by reticular cells. Reticular fibres crosslink to form a fine meshwork(reticulin). 
  • This network acts as a supporting mesh in soft tissue such as liver, bone marrow and the tissues and organs of the lymphatic system. Hence, the Liver is called the reticular gland because it contains reticular tissue.
So, the correct answer is 'It contains reticular tissue'.

Which of these possesses good regenerating power 

bio-chemistry digestion liver functions of the liver secretory organs

  1. Brain

  2. Kidney

  3. Lung

  4. Liver

Show answer
Correct Option: D
Explanation:

In mammals liver has extensive power of regeneration. If a part of liver is surgically removed the cells of the remaining part undergo repeated division until the original volume of this vital organ restored 

So the correct option is D.

Largest gland in the body is

bio-chemistry digestion liver functions of the liver secretory organs

  1. Liver

  2. Pancreas

  3. Gastric gland

  4. Adrenal

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Correct Option: A

Cod and Shark liver oil is source of

bio-chemistry digestion liver functions of the liver secretory organs

  1. Constructive nutrients

  2. Protective nutrients

  3. Protective and constructive nutrients

  4. Energetic nutrients

  5. Energetic and constructive nutrients

Show answer
Correct Option: C

Which of the following organs in mammals do not consist of a central 'medullary' region surrounded by a cortical region?

bio-chemistry digestion liver functions of the liver secretory organs

  1. Ovary

  2. Adrenal

  3. Liver

  4. Kidney

Show answer
Correct Option: C
Explanation:

A. The ovaries are solid organs and are composed of connective tissue, the stroma. The stroma consists of an outer ovarian cortex and central ovarian medulla.

B. Adrenal: The adrenals are conical, yellowish bodies. Each has two distinct regions are called adrenal cortex and adrenal medulla.
D. Kidney:  The two regions of the kidney are outer region is called renal cortex and inner region is termed renal medulla.

So, the correct answer is 'Liver'.

Glisson's capsule is the characteristic feature of 

bio-chemistry digestion liver functions of the liver secretory organs

  1. mammals

  2. birds

  3. reptiles

  4. arthropods.

Show answer
Correct Option: A
Explanation:

Glisson's capsule is the characteristic feature of 'mammals'.

So the correct option is A.

How many lobes of liver are present in rabbit?

bio-chemistry digestion liver functions of the liver secretory organs

  1. 2

  2. 4

  3. 5

  4. 6

Show answer
Correct Option: C
Explanation:

The rabbit liver is situated in the epigastric region, between both costal arches, reaching the level of the right 7th and left 9th ribs. Rabit liver is divided into two right and left the region by deep cleft with right and left lobes. These lobes are further divided into the posterior and anterior region. It contains five lobes, as the right hepatic lobe, caudate and quadrate lobes are single, and the left hepatic one is separated in lateral and medial parts. Thus the correct answer is option C.


Heparin is produced by

bio-chemistry digestion liver functions of the liver secretory organs

  1. Kidney cells

  2. Blood cells

  3. Bone marrow

  4. Liver cell

Show answer
Correct Option: B
Explanation:

Heparin is an anticoagulant that prevent blood clotting by the release of specific proteins like tissue plasminogen activator and tissue factor pathway inhibitor, into the blood.

Sinusoids are characterised by

bio-chemistry digestion liver functions of the liver secretory organs

  1. Irregular lumen

  2. Absence of endothelium

  3. Mixing of blood and lymph

  4. Both B and C

Show answer
Correct Option: A
Explanation:

Sinusoids are characterized by a form of terminal blood channel consisting of a large, irregular anastomosing vessel having a lining of reticulo-endothelium and found in the liver, heart, spleen, pancreas, and the adrenal, parathyroid, carotid, and hemolymph glands.

So, the correct option is 'Irregular lumen'.

Select the odd one our w.r.t. porins.

bio-chemistry plant physiology active transport and passive transport types of plant transport atp

  1. Not associated with the inner membrane of plastids

  2. Associated with the outer membrane of mitochondria

  3. Found in outer membrane of gram positive bacteria

  4. Allow movement of low molecular weight hydrophilic substances

Show answer
Correct Option: A
Explanation:

Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as channels that are specific to different types of molecules. Porins from non-green plastids and from the outer mitochondrial membrane were re- constituted into planar lipid bi-layers. The proteins showed high pore-forming activities and similar single- channel conductance. So, the correct option is "Not associated with the inner membrane of plastids".