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Biomolecules (Biology) · Question 26

NEET (UG) 2022MCQEasy📈 Topic in 38% papers+4−1
1

Read the following statements on lipids and find out correct set of statements : Choose the correct answer from the options given below:

  1. A, B and C only
  2. A, D and E only
  3. C, D and E only
  4. A, B and D only

Answer

(3) C, D and E only

Solution

A: Lecithin is a phospholipid (it contains phosphorus and a phosphorylated organic compound), not a glycolipid ⇒ incorrect.

B: Saturated fatty acids have no double bond; unsaturated fatty acids have one or more C=C bonds ⇒ incorrect.

C: As per NCERT, oils have lower melting point (e.g. gingelly oil) and hence remain as oil in winters ⇒ correct.

D: Lipids are generally water insoluble and soluble in some organic solvents ⇒ correct.

E: Fatty acid esterified with glycerol gives monoglycerides (two → diglycerides, three → triglycerides) ⇒ correct.

∴ C, D and E only.

Answer: (3)

NEET (UG) 2022

Keep practising — Biomolecules (Biology)

2

A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose?

  1. C12H20O10
  2. C12H24O12
  3. C12H22O11
  4. C12H24O11
NEET (UG) 2022
3

Match List-I with List-II: Choose the correct answer from the options given below:

  1. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
  2. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
  3. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
NEET (UG) 2022
4

Match List-I with List-II Choose the correct answer from the options given below

  1. (a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)
  2. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
  3. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
  4. (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
NEET (UG) 2022 (Phase 2)
5

Primary proteins are also called as polypeptides because :

  1. They can assume many conformations
  2. They are linear chains
  3. They are polymers of peptide monomers
  4. Successive amino acids are joined by peptide bonds
NEET (UG) 2022 (Phase 2)
6

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

  1. Statement I is incorrect but Statement II is correct
  2. Both Statement I and Statement II are correct
  3. Both Statement I and Statement II are incorrect
  4. Statement I is correct but Statement II is incorrect
NEET (UG) 2022 (Phase 2)
7

In the enzyme which catalyses the breakdown of: 2H2O2 2H2O + O2 the prosthetic group is :

  1. Niacin
  2. Nicotinamide adenine dinucleotide
  3. Haem
  4. Zinc
NEET (UG) 2022 (Phase 2)
8

Which of the following are not secondary metabolites in plants?

  1. Rubber, gums
  2. Morphine, codeine
  3. Amino acids, glucose
  4. Vinblastin, curcumin
NEET (UG) 2021
9

Match List-I with List-II. Choose the correct answer from the options given below.

  1. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
  2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  3. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
  4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
NEET (UG) 2021
10

Identify the incorrect pair

  1. Drugs - Ricin
  2. Alkaloids - Codeine
  3. Toxin - Abrin
  4. Lectins - Concanavalin A
NEET (UG) 2021
11

Following are the statements with reference to 'lipids'. Choose the correct answer from the options given below.

  1. B and E only
  2. A and B only
  3. C and D only
  4. B and C only
NEET (UG) 2021

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