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Biomolecules (Biology)

NEET (UG) 2023MCQEasy📈 Topic in 38% papers+4−1
Ques. 1NEET (UG) 2023

Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of

  1. Amylase
  2. Lipase
  3. Dinitrogenase
  4. Succinic dehydrogenase

Answer

(4) Succinic dehydrogenase

Solution

Malonate closely resembles succinate (the substrate of succinic dehydrogenase) in structure.

It binds to the active site of succinic dehydrogenase and blocks it — competitive inhibition.

Such competitive inhibitors are used in the control of bacterial pathogens.

Answer: (4)

Keep practising — Biomolecules (Biology)

Ques. 2NEET (UG) 2023

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

  1. Both Statement I and Statement II are false.
  2. Statement I is true but Statement II is false.
  3. Statement I is false but Statement II is true.
  4. Both Statement I and Statement II are true.
Ques. 3NEET (UG) 2023

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

  1. Both Statement I and Statement II are false.
  2. Statement I is true but Statement II is false.
  3. Statement I is false but Statement II is true.
  4. Both Statement I and Statement II are true.
Ques. 4NEET (UG) 2022

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
Ques. 5NEET (UG) 2022

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
Ques. 6NEET (UG) 2022

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)
Ques. 7NEET (UG) 2022 (Phase 2)

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)
Ques. 8NEET (UG) 2022 (Phase 2)

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
Ques. 9NEET (UG) 2022 (Phase 2)

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
Ques. 10NEET (UG) 2022 (Phase 2)

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
Ques. 11NEET (UG) 2021

Which of the following are not secondary metabolites in plants?

  1. Rubber, gums
  2. Morphine, codeine
  3. Amino acids, glucose
  4. Vinblastin, curcumin

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