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Q.1: Malonic acid is an example of——?
- Irreversible inhibitor
- Reversible inhibitor
- Competitive inhibitor
- Non-competitive inhibitor
C
Q.2: Magnifying power of electron microscope as compared to eye is——?
- 500 X
- 250000X
- 500000X
- 250X
B
Q.3: Inhibitors which block the enzyme by forming weak bond are called——?
- Competitive inhibitors.
- Non-competitive inhibitors
- Irreversible inhibitors.
- Both a and b
D
Q.4: Which of the statement about cell membrane is not true?
- It contains protein molecules embedded in lipid bilayer
- It is a differentially permeable membrane.
- It contains charged pores thus ions being charged particles cross cell membrance much easier than neutral particles.
- It may get infolded to engulf solid or liquid material.
C
Q.5: A substance which binds at the active site of the enzyme but does not result in the formation of the products is called——–?
- Irreversible inhibitor
- Reversible inhibitor
- Competitive inhibitor
- Non-competitive inhibitor
C
Q.6: A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called——–?
- Co-enzyme
- Blocker
- Inhibitor
- Cofactor
C
Q.7: Optimal temperature of enzymes present in human body is——-?
- 27?C
- 37?C
- 47?C
- 30?C
B
Q.8: Strengthening material of prokaryotic cell wall is—–?
- Cellulose
- Chitin
- Inorganic salts silica waxes and ligin
- Peptidoglycan or Murein.
D
Q.9: Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called—–?
- Cytosol
- Cisternae
- Polysomes
- Cristae
B
Q.10: Whone is not the function of endoplasmic reticulum?
- Nerve impulse conduction
- Transport of material
- Mechanical support
- Synthesis of conjugated molecules
D