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The active site of an enzyme______________?
  • (A)  Never changes
  • (B)  Forms no chemical bond with substrate
  • (C)  Determined by structure and the specificity of the enzyme
  • (D)  They are non specific in their action
Which statement is incorrect about Lock and Key Model________________?
  • (A)  Specific enzyme can transform only a specific substrate
  • (B)  Active site of an enzyme is a non flexible structure
  • (C)  Active site does not change before during or even after the reaction
  • (D)  It explains the mechanism of every chemical reaction
Which of the statement about cell membrane is not true?
  • (A)  It contains protein molecules embedded in lipid bilayer
  • (B)  It is a differentially permeable membrane.
  • (C)  It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
  • (D)  It may get infolded to engulf solid or liquid material.