Biomolecules

Biology
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Which of the following statements is not correct?

A
All enzymes found in cells are invariably proteins which catalyse biological reactions
B
Enzymes act efficiently at a moderate temperature and p
C
Coenzymes increase the activities of enzymes
D
Enzymes are not specific in their action on substrates
Medium
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Mark the wrong statement about enzymes

A
enzymes are biological catalysts
B
each enzyme can catalyse a number of similar reactions
C
enzymes are very efficient catalysts
D
enzymes are needed only in very small amounts for their action
Medium
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The difference among species is due to the difference in its ________ components.

A
Carbohydrates
B
Protein
C
Lipid
D
Vitamin
Medium
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Inulin is a ..................... found in a plant cell.

A
Lipid
B
Protein
C
Polysaccharide
D
Vitamin
Medium
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Which of the following are the components only of a plant cell?

A
Glucose and cellulose
B
Pyruvic acid and glucose
C
Cellulose and starch
D
Starch and pyruvic acid
Medium
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The term 'Protein' is derived from the Greek word 'Proteios' which means

A
Big in size
B
Tiny
C
Neutral
D
Of prime importance
Medium
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Enzymes are mainly composed of:

A
carbohydrates
B
nucleic acids
C
globular proteins
D
fibrous proteins
Medium
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Glycogen is found in

A
Mitochondria
B
Kreb's cycle
C
Cytoplasm
D
None of these
Medium
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Sugar and amino acids are

A
Primary metabolites
B
Secondary metabolites
C
Feed stock
D
Inoculum
Medium
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