M C Q s D r i v e
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Biology

(4.9) (231)
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 Lorenz Oken
B Schwann
C Robert Brown
D Rudolph Virchow

A Saturation
B Denaturation
C Composition
D Inhibition

A Cytoplasm
B Nucleus
C Nucleolus
D Endoplasmic reticulum

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

A Enzymes get denatured at higher substrate conc
B Rate of reaction is indirectly proportional to substrate concentration at this point
C All the active sites on enzyme molecule are occupied
D None of these

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

A Increase in enzyme molecule increases the available active sites.
B This relation is for unlimited time period with unlimited enzyme concentration
C If the concentration is doubled the rate will become two fold.
D None of these.

A Polymer
B Polypeptide
C Polysomes
D Monomer

A Glyoxisomes
B Lysosomes
C Peroxisomes
D Ribosomes

A Active site
B Binding site
C Catalytic site
D Allosteric site