M C Q s D r i v e
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Biology

(4.8) (240)
1536 MCQs
All-Courses
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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

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.

A Competitive inhibitors.
B Non-competitive inhibitors
C Irreversible inhibitors.
D Both a and b

A 500 X
B 250000X
C 500000X
D 250X

A Irreversible inhibitor
B Reversible inhibitor
C Competitive inhibitor
D Non-competitive inhibitor

A Irreversible inhibitor
B Reversible inhibitor
C Competitive inhibitor
D Non-competitive inhibitor

A Their physical properties like size & weight.
B Physical properties of the medium like its density.
C Their electrical properties like their charges
D Both a and b

A increase in concentration of enzyme
B increase in concentration of substrate
C increase in pH
D increase in temperature

A Activate
B Unaffected
C Denatured
D None of these

A 2.0 ?m
B 2-4 A
C 24 ?m
D 24 A

A Change in ionization of amino acids at the active site of the enzyme
B Change in the ionization of the substrate
C Denaturation of the enzyme
D Increase in the reaction rate