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NEET - 2024 Previous Year Questions



NEET Biology Previous Year Questions - 2024

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

[class-xi ]

  • Enzyme activation
  • Competitive inhibition
  • Cofactor inhibition
  • Feedback inhibition
    • Correct Option: B  [ Competitive inhibition ]

    Remark:

Which of the following are required for the dark reaction of photosynthesis?
A. Light
B. Chlorophyll
C. CO2
D. ATP
E. NADPH
Choose the correct answer from the options given below:

[class-xi ]

  • D and E only
  • A, B and C only
  • C, D and E only
  • B, C and D only
    • Correct Option: C  [ C, D and E only ]

    Remark:

Which one of the following is not a criterion for classification of fungi?

[class-xi ]

  • Mode of spore formation
  • Fruiting body
  • Mode of nutrition
  • Morphology of mycelium
    • Correct Option: C  [ Mode of nutrition ]

    Remark:

Spindle fibers attach to kinetochores of chromosomes during:

[class-xi ]

  • Metaphase
  • Prophase
  • Telophase
  • Anaphase
    • Correct Option: A  [ Metaphase ]

    Remark:

Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

[class-xi ]

  • Phospholipids
  • Amino acids
  • Carbohydrates
  • Glycerides
    • Correct Option: A  [ Phospholipids ]

    Remark:

The cofactor of the enzyme carboxypeptidase is:

[class-xi ]

  • Niacin
  • Zinc
  • Haem
  • Flavin
    • Correct Option: B  [ Zinc ]

    Remark: Explanation: NCERT Page No.159,(Topic-9.12.6 Co-factors)

The lactose present in the growth medium of bacteria is transported to the cell by the action of:

[class-xii ]

  • Acetylase
  • Beta-galactosidase
  • Polymerase
  • Permease
    • Correct Option: D  [ Permease ]

    Remark: Explanation: NCERT Page No.101, (Topic-5.8.1 The Lac operon)

Given below are two Statements:
Statement I: Chromomes become gradually visible under light microscope during leptotene stage.
Statement II: The begining of diplotene stage is recognized by dissolution of synaptonemal complex.
In the light of the above statements, choose the correct answer from the options given below:

[class-xi ]

  • Both Statement I and Statement II are false.
  • Both Statement I and Statement II are true.
  • Statement I is false but Statement II is true.
  • Statement I is true but Statement II is false.
    • Correct Option: D  [ Statement I is true but Statement II is false. ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)Nucleolus (I)Site of formation of glycolipid
(B)Centriole (II)Organization like the cartwheel
(C)Leucoplasts (III)Site for active ribosomal RNA synthesis
(D)Golgi apparatus (IV)For storing nutrients
Choose the correct answer from the options given below:

[class-xi ]

  • A-III, B-IV, C-II, D-I
  • A-I, B-II, C-III, D-IV
  • A-II, B-III, C-I, D-IV
  • A-III, B-II, C-IV, D-I
    • Correct Option: D  [ A-III, B-II, C-IV, D-I ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)GLUT-4 (I)Hormone
(B)Insulin (II)Enzyme
(C)Trypsin (III)Intercellular ground substances
(D)Collagen (IV)Enables glucose transport into cell.
Choose the correct answer from the options given below:

[class-xi ]

  • A-I, B-II, C-III, D-IV
  • A-IV, B-I, C-II, D-III
  • A-III, B-IV, C-I, D-II
  • A-II, B-III, C-IV, D-I
    • Correct Option: B  [ A-IV, B-I, C-II, D-III ]

    Remark:
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NEET Biology Previous Year Questions (PYQs)