Biomolecules Test

Biomolecules

This is Biomolecules Test-05 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The number of substrate molecules changed per minute by a molecule of enzyme is called
  • A
    Final number
  • B
    Nome of these
  • C
    Enzyme reaction number
  • D
    Turn over number
    Correct
2
Monoterpene esters called pyrethoids found in flowers and leaves of chrysnthemumare used commercially for making
  • A
    Perfumes
  • B
    Insecticides
    Correct
  • C
    Drugs All of these
3
The inhibition of enzyme activity by the presence of a chemical that competes with the substrate for binding to the active site of the enzyme is called
  • A
    None-competitive inhibitor
  • B
    Substrate analogue
    Correct
  • C
    Irreversible inhibition
  • D
    Reversible inhibition
4
Select the group of fat soluble vitamins from the followings
  • A
    Vitamins A,B,C and D
  • B
    Vitamins B,C,D and K
  • C
    None of these
  • D
    Vitamins A,D,E and K
    Correct
5
Enzymes functional inside the living cells are called
  • A
    Coenzymes
  • B
    Holoezymes
  • C
    Exoenzymes
  • D
    Endoenzymes
    Correct
6
Polysaccharide does not metabolised in human body and used for kidney function is
  • A
    Fructose
  • B
    Gluctose
  • C
    Inulin
    Correct
  • D
    Chitin
7
Metal ions required for functioning of enzyme is
  • A
    Co-factor
    Correct
  • B
    Co-enzyme
  • C
    Holoenzyme
  • D
    Prosthetic group
8
Which is the cofactor for the proteolytic enzyme carboxypeptidase?
  • A
    Magnesium
  • B
    Copper
  • C
    Zinc
    Correct
  • D
    Mercury
9
The enzymes show high activity at
  • A
    Optimum temperature
    Correct
  • B
    None of the above
  • C
    High temperature
  • D
    Low temperature
10
In yeast, during fermentation the glycolysis pathway leads to
  • A
    Production of ethanol
    Correct
  • B
    Production of oxygen
  • C
    Production of pyruvic acid
  • D
    Production of glucose
11
Enzymes catalysing in the link together of two compounds are
  • A
    Ligases
    Correct
  • B
    Lyases
  • C
    Hydrolases
  • D
    Isomerases
12
The protein portion of an enzyme is called as
  • A
    Co-enzyme
  • B
    Prosthetic group
  • C
    Apoenzyme
    Correct
  • D
    Cofactors
13
Nicotinamide can be synthesised in human body from
  • A
    Tryptophan
    Correct
  • B
    Fructose
  • C
    Tyrosine
  • D
    Lactose
14
Important site for formation of glycoproteins and glycolipids is
  • A
    Plastids
  • B
    Vacuoles
  • C
    Golgi apparatus
    Correct
  • D
    Lysosomes
15
Most abundant mineral in body fluids are
  • A
    \(C{a^{2 + }}\) and \({O^{2 - }}\)
  • B
    \(M{g^{2 + }}\) and \({I^ - }\)
  • C
    \(N{a^ + }\) and \(M{g^{2 + }}\)
  • D
    \(N{a^ + }\) and \(C{l^ - }\)
    Correct