MCQ Questions Biomolecules Biology Class 11 Chapter 9
MCQ Quiz Biomolecules Chapter 9 Biology Class 11 MCQ Questions for NEET | School Exams.
Prepare these important MCQ Questions of Biomolecules (Biology), These are Latest questions to expect in NEET | School Exams.
1. To perform chemical analysis acid used is X and we obtain Y slurry. X and Y are:
1. Trifluoroacetic acid, thin
2. Trichloroacetic acid, thick
3. Trichloroacetic acid, thin
4. Trifluoroacetic acid, thick
2. Analytical techniques give us an idea of:
1. Molecular formula
2. Probable structure
3. Reactivity with water
4. Both 1 and 2
3. Choose the incorrect statement:
1. Silicon is the second most abundant on the earth crust.
2. Destructive experiment is to be done to detect inorganic compounds.
3. Most abundant organic compound is water.
4. All the carbon compounds that we get from living beings can be called biomolecules.
4. Analysis of compounds gives an idea of:
1. Carbon
2. Hydrogen
3. Organic constituents
4. Both 1 and 2
5. Based on the nature of variable group R there are how many amino acids?
1. 20
2. 24
3. 19
4. Many
6. Palmitic acid has:
1. 16 carbon including carboxyl carbon
2. 15 carbon including carboxyl carbon
3. 17 carbon including carboxyl carbon
4. 16 carbon excluding carboxyl carbon
7. Lipids are classified as fats and oils based on
1. Boiling point
2. Melting point
3. Saturation or unsaturation
4. Presence or absence of phosphorous
8. Which tissue especially has lipids with complex structures:
1. Neural tissue
2. Cardiac tissue
3. Connective tissue
4. Epithelial tissue
9. There are how many types of nucleotides?
a. 4
b. 2
c. 1
d. 5
10. Choose the correct statement:
1. Adenine has only one oxygen atom in its structure.
2. Cholesterol has 25 carbon in its structure.
3. Nucleic acids like DNA and RNA consists of nucleotides only.
4. All of the above.
11. Choose the incorrect statement:
1. All compounds found in the acid-soluble pool have their, molecular weights ranging from 18 to 800 Da.
2. Polysaccharides, nucleic acids, Proteins comprise the macromolecular fraction of any living tissue.
3. When we grind tissue we do not disturb the cell structure.
4. Percentage of protein is about 10 – 15 in cellular mass.
12. Polysaccharides are found in:
1. Acid soluble pellet
2. Acid insoluble supernatant
3. Acid soluble supernatant
4. Acid insoluble pellet
13. Complex polysaccharides are mostly:
1. Homopolymers
2. Heteropolymers
3. Copolymers
4. Branched-chain polymers
14. A nucleotide has how many chemically distinct components:
a. 2
b. 4
c. 1
d. 3
15. In proteins:
1. Only left-handed helices are observed
2. Helices nature change with temperature
3. Only right-handed helices are observed
4. Both left and right handed helices are observed
16. Nucleic acids exhibit ___ variety of secondary structures:
1. Little
2. Wide
3. No variety
4. Almost all
17. One of the greatest discovery ever made was:
1. 10 metabolic steps in Glycolysis
2. Principle of Bioenergetics
3. All biomolecules have a turnover
4. Structure of alpha-helix
18. Choose the correct statement:
1. Majority of metabolic reactions occur in isolation.
2. Glucose in a normal individual is 4.2mol/L – 6.1 mol/L.
3. Every biochemical reaction is a catalyzed reaction.
4. Metabolic pathways are circular only.
19. Choose the correct statement:
A. Metabolic reactions are always linked to some other reactions.
B. Flow of metabolite through metabolic pathway is at definite rate.
1. Both A and B are incorrect
2.Both A and B are correct
3. Only A is correct
4. Only B is correct
20. Cholesterol is derived from:
1. Butryric acid
2. Ciric acid
3. Acetic acid
4. Amino acids
21. Metabolism is synonymous to:
1. Equilibrium state
2. Living state
3.Non steady state
4. Transition state
22. In absence of any enzyme rate of formation of carbonic acid is about
1. 200 molecules per second
2. 600000 molecules per hour
3. 200 molecules per hour
4. 600000 molecules per second
23. Glycolysis is step reaction and catalysed by _ different enzymes.
1. 10, 5
2. 12,10
3. 10,12
4. 10,10
24. Intermediate formed in Enzyme action is:
1. ES complex
2. EP complex
3. PS complex
4. Both 2 and 3
25. Succinate dehydrogenase is inhibited by:
1. Malonate
2. Malate
3. Aspartate
4. Oxalosuccinate
26. In enzyme classification there are how many subclasses for each class?
a. 2-6
b. 4-13
c. 6
d. 13-20
27. Enzymes are named according to how many no. of digits?
a. 4
b. 6
c. 2
d. 9
28. Enzymes catalysing transfer of group H between a pair of substrate is:
1. Transferases
2. Isomerases
3. Dehydrogenase
4. Lyases
29. Choose the incorrect statement:
1. Co-enzymes are organic compounds.
2. Metal ions forms coordinate bonds with side chains.
3. Prosthetic group haem is part of site other than active site of enzyme.
4. NAD has two phosphate group in its structure.
30. Choose the incorrect statement:
1. Cellulose is a primary metabolite.
2. Some secondary metabolites have ecological importance.
3. Gums are polymeric in nature.
4. Curcumin is categorised as a drug among secondary metabolites.