Chapter 6: Enzymes - Biology For High School - Grade 9(Biology ) Questions and Answers

Question 1. The catalytic region in which a small portion of molecules are involved in catalysis is called
  1.    duplication site
  2.    absorption site
  3.    active site
  4.    inactive site
Explanation:-
Answer: Option C. -> active site
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The kind of molecules at which the enzymes act are classified as
  1.    solutes
  2.    concentrates
  3.    nitrates
  4.    substrates
Explanation:-
Answer: Option D. -> substrates
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The model which states that specific shapes are possessed by substrate and enzyme is known as
  1.    deduction model
  2.    induction model
  3.    lock and key model
  4.    arrow and shield model
Explanation:-
Answer: Option C. -> lock and key model
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. The model proposed by Emil Fischer is known as
  1.    arrow and shield model
  2.    deduction model
  3.    induction model
  4.    lock and key model
Explanation:-
Answer: Option B. -> deduction model
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. The regulators of enzymatic reactions are classified as
  1.    activators only
  2.    converters only
  3.    inhibitors
  4.    activators and converters
Explanation:-
Answer: Option D. -> activators and converters
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The vibrations of atoms of enzymes is increased and leads to the loss of
  1.    nucleated structure of atoms
  2.    solvent structure of enzymes
  3.    solute structure of enzymes
  4.    globular structure of enzymes
Explanation:-
Answer: Option D. -> globular structure of enzymes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. The catabolism is related to
  1.    release of energy
  2.    absorption of energy
  3.    release of water
  4.    absorption of water
Explanation:-
Answer: Option A. -> release of energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The optimum temperature of working of human enzymes is
  1.    52 ° C
  2.    47 ° C
  3.    37 ° C
  4.    42 ° C
Explanation:-
Answer: Option C. -> 37 ° C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. The energy required in chemical reactions is called
  1.    solvent energy
  2.    activation energy
  3.    enzymatic energy
  4.    catalysis energy
Explanation:-
Answer: Option B. -> activation energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. All the enzymes are considered as
  1.    oxygen based acids
  2.    carbon based acids
  3.    nitrogen based acids
  4.    proteins
Explanation:-
Answer: Option D. -> proteins
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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