Free Proteins MCQs with Answers

• A. Globular proteins
• B. Fibrous proteins
• C. Glycoproteins
• D. Glycolipids

Explanation: Explanation:This is a fact. Antibiotics are actually Globular proteins.

• A. 11000 atoms
• B. 10000 atoms
• C. 6600 atoms
• D. 6800 atoms

Explanation: Explanation:Each molecule of Haemoglobin is made up of nearly 10,000 atoms and it is 68000 times heavier than a hydrogen molecule.

• A. -C-N
• B. -C-O
• C. -C-P
• D. -C-S

Explanation: The peptide bond is the bond formed when the carboxyl group reacts with an amide group forming a -C-N- bond.

• A. 20
• B. 170
• C. 25
• D. 200

Explanation: Many naturally occurring amino acids have been found however, only 20 of those types are known to be found in the proteins making up the…

• A. R group
• B. Disulfide bond
• C. Amino group
• D. Hydrogen bond

Explanation: The α-helix is a right-handed helix with the peptide bonds present on the inside and the side chains extending outward.

• A. Cluster
• B. Spherical or curried up ball
• C. Long strands or fibrils
• D. Flat uncoiled chains

Explanation: The options describe different conformations of polypeptide chains.Option A describes a formation, not characteristic of fibrous…

• A. Ethane
• B. Fatty acid
• C. H atom
• D. Competitive reversible

Explanation: Glycine is the simplest amino acid, with its R group (the side chain of an amino acid) consisting of just a single hydrogen atom.

• A. Primary structure of protein
• B. Secondary structure of protein
• C. Tertiary structure of protein
• D. Quaternary structure of protein

Explanation: Tertiary structure of protein represents the unique three-dimensional shape of the fully folded polypeptide.

• A. Physiological components
• B. Functional components
• C. Structural components
• D. Biological components

Explanation: Proteins play a crucial role as the main structural components of the cell.

• A. Condensation
• B. Hydrolysis
• C. Glycolysis
• D. Fixation

Explanation: Hydrolysis is a chemical reaction where water is used to break down a compound, resulting in the separation of the compound into its…

• A. Valine acid
• B. Alamine acid
• C. Arginine acid
• D. Methionine acid

Explanation: Sickle cell anemia results from the single amino acid substitution of valine for glutamic acid in the beta-chain owing to a nucleotide…

• A. Amino groups on the amino acids
• B. R- groups on the amino acids·
• C. Peptide bonds
• D. Amino acids sequences within protein molecules

Explanation: Diversity refers to different types of proteins.

• A. Hydrogen groups of adjacent amino acids
• B. Functional group of the amino acids
• C. Carboxyl group and amino group
• D. Functional group and hydrogen group of adjacent amino acid

Explanation: Carboxyl or COOH- a group of one amino acid and Amine or NH3+ of another Amino acid are responsible for forming peptide bonds.

• A. Four oxygen molecules
• B. Three oxygen molecules
• C. Two oxygen molecules
• D. One oxygen molecule

Explanation: Myoglobin is a protein found in muscle tissues with a tertiary structure comprising a single polypeptide chain.

• A. Hairs
• B. Haemoglobin
• C. Muscle cells
• D. Nails

Explanation: Hemoglobin is indeed an example of a globular protein. It's a protein found in red blood cells that helps transport oxygen throughout the…

• A. Renin
• B. Insulin
• C. Caesin
• D. Prolactin

Explanation: Casein is a type of protein that is naturally present in milk. It makes up about 80% of the total protein content in cow's milk.

• A. Proline
• B. Glutamine
• C. Valine
• D. Glycine

Explanation: Option C is correct. In sickle cell anemia, glutamic acid in the hemoglobin molecule is replaced by valine.

• A. R-group
• B. Amino group
• C. Carboxyl group
• D. Hydrogen of alpha carbon

Explanation: Option A is correct.Amino acids mainly differ from each other by the difference in their R-group.

• A. Coordinate bond
• B. Covalent bond
• C. Hydrogen bond
• D. Ionic bond

Explanation: Hydrogen bonds play a crucial role in determining the secondary structure of proteins.