2.  Killed

3.  Slightly activator

4.  Inactivated

1.  core of starch surrounded by sheath of protein

2.  core of potein surrounded by fatty sheath

4.  core of nucleic acid surrounded by protein sheath.

1.  Apoenzyme

2.  Coenzyme

3.  Inhibitor

1.  Melia azedarach

2.  Panicup decompositum

4.  Acacia aswaldii.

1.  Fatty acids

3.  Hexose sugar

4.  Inorganic phosphate

1.  All enzymes are thermolabile

2.  All enzymes are biocatalysts

3.  All enzymes are proteins

1.  Spirogyra

2.  Ulothrix

3.  Oscillatoria

2.   Laminaria

3.  Sargassum

4.   Polysiphonia

1.  Ulva

2.  Palmella

4.  Hydrodictryon.

1.  Unfavourable environment

2.  Toxic chemical

3.  Water deficiency