0

Biology

Description: Important Macromolecules, Enzymes and Metabolites of life
Number of Questions: 15
Created by:
Tags: Science Proteins Lipids Carbohydrates Chemical Reactions involving Enzymes
Attempted 0/15 Correct 0 Score 0

The enzyme obtained from the venom of the Indian saw-scaled viper is called

  1. ligninase

  2. lactonase

  3. ecarin

  4. mucunain

  5. expansin


Correct Option: C
Explanation:

Ecarin is derived from the venom of the Indian saw-scaled viper.

Which of the following is an intermediate in the metabolism of valine?

  1. Glutaryl-coenzyme A

  2. Glutaconyl-CoA

  3. Crotonyl-coenzyme A

  4. Isobutyryl-coenzyme A

  5. Methacrylyl-CoA


Correct Option: E
Explanation:

Methacrylyl-CoA is an intermediate in the metabolism of valine.

The fatty acid obtained from pomegranate seed oil is

  1. nervonic acid

  2. punicic acid

  3. oleic acid

  4. α-Parinaric acid

  5. rumenic acid


Correct Option: B
Explanation:

Punicic acid is a polyunsaturated fatty acid.

Which of the following fatty acids integrates into the phospholipid bilayer of mammalian cells?

  1. Rumenic acid

  2. α-Parinaric acid

  3. Oleic acid

  4. Punicic acid

  5. Nervonic acid


Correct Option: B
Explanation:

α-Parinaric acid occurs naturally in the seeds of makita tree.

Which of the following metabolites regulates the 'rest and digest' activity of the glands in the human body?

  1. Hyoscyamine

  2. Atropine

  3. Cocaine

  4. Scopolamine

  5. Codeine


Correct Option: B
Explanation:

Atropine is a competitive muscarinic acetylcholine receptor antagonist.

The enzyme participating in bile acid biosynthesis is

  1. trypsinogen

  2. chymotrypsinogen

  3. sterol esterase

  4. phospholipase D

  5. pancreatic lipase


Correct Option: C
Explanation:

This enzyme participates in bile acid biosynthesis.

Which of the following amino acids plays a vital role in healing wounds?

  1. Asparagines

  2. Cystine

  3. Glutamine

  4. Glycine

  5. Cysteine


Correct Option: D
Explanation:

It acts as a neurotransmitter and plays a vital role in healing wounds.

_________ is secreted by the stomach and destroys bacteria and viruses.

  1. Gastric lipase

  2. Gastrin

  3. Mucin

  4. Intrinsic factor

  5. Pepsin


Correct Option: C
Explanation:

The stomach has a priority to destroy the bacteria and viruses using its highly acidic environment.

Which of the following monosaccharides is a constituent of some glycoprotein hormones including follicle-stimulating hormone?

  1. Galactosamine

  2. Glucosamine

  3. Sialic acids

  4. N-Acetylglucosamine

  5. Sulfoquinovose


Correct Option: A
Explanation:

Galactosamine is a constituent of some glycoprotein hormones, such as follicle-stimulating hormone (FSH).

Which type of lipids are carotenoids?

  1. Sterol lipids

  2. Prenol lipids

  3. Sphingolipids

  4. Glycerolipids

  5. Glycerophospholipids


Correct Option: B
Explanation:

Prenol lipids are synthesised from the five-carbon-unit precursors isopentenyl diphosphate and dimethylallyl diphosphate. Carotenoids are important simple isoprenoids that function as antioxidants and as precursors of vitamin A.

The sugar present in honey and sweet potato starch is

  1. melibiose

  2. sophorose

  3. nigerose

  4. kojibiose

  5. lactulose


Correct Option: D
Explanation:

Kojibiose is a disaccharide. It is a product of the caramelisation of glucose.

Which of the following fatty acids stimulates the activation of new platelets in case of an injury?

  1. Docosahexaenoic acid

  2. Arachidonic acid

  3. Thromboxane A2

  4. Leukotrienes

  5. Prostaglandins


Correct Option: C
Explanation:

It stimulates activation of new platelets.

Which type of protein is the egg albumin?

  1. Phosphoproteins

  2. Glycoproteins

  3. Lipoproteins

  4. Chromoproteins

  5. Nucleoproteins


Correct Option: B
Explanation:

These proteins contain carbohydrates as the prosthetic group.

In which of the following lipid molecules are both the hydrophobic and hydrophilic ends present?

  1. Phospholipids

  2. Steroids

  3. Waxes

  4. Saccharolipids

  5. Polyketides


Correct Option: A
Explanation:

Phospholipids are unique because they have a hydrophobic and a hydrophilic end.

Brush border enzyme is a common name for

  1. lactase

  2. motilin

  3. gastric inhibitory peptide

  4. cholecystokinin

  5. secretin


Correct Option: A
Explanation:

This is a significant brush border enzyme.

- Hide questions