Enzymes
biochemistry enzymes Factors Affecting Enzyme ActionFactors Affecting EnzymesProperties of EnzymesEnzymesEnzymesActivity and Inhibition of EnzymesInhibition and Activation of Enzymes
Questions
Which mineral element is essential for the activity of enzyme aconitase?
- Zinc
- Copper
- Iron
- Vanadium
- Cadmium
Non protein part of the enzyme is called
- holoenzyme
- apoenzyme
- coenzyme
- prosthetic group
- all the above
Nitrate reductase enzyme forms
- nitrogen
- amino acid
- ammonia
- nitrite
- nitrate
An enzyme extract when subjected to electric field separates into two fractions, each catalyzing the same reaction. These fractions are
- allosteric enzymes
- coenzymes
- prosthetic groups
- isoenzymes
- multi enzymes
Which mineral element is essential for the activity of the enzyme nitrate reductase?
- Molybdenum
- Zinc
- Potassium
- Nickel
- Manganese
Which mineral element is necessary for the enzyme enolase?
- Magnesium
- Manganese
- Iron
- Molybednum
- Nickel
NADP is_____.
- a coenzyme
- an enzyme
- a part of tRNA
- a part of sRNA
- a vitamin
Inorganic part of the enzyme is called
- hormone
- coenzyme
- prosthetic group
- activator
- holoenzyme
Enzymes are absent in
- algae
- fungi
- bacteria
- lactic acid bacteria
- virus
At boiling point, an enzyme is
- killed
- denatured
- unaffected
- inactivated
- all the above
Enzymes, vitamins and hormones have one thing in common, i.e. they ____________.
- all are synthesized inside the organism
- all are proteins
- all help in regulatory mechanism
- all increase oxidative metabolism
- all are used up in the reaction
Which of the following is not a character of enzyme?
- They are specific in nature.
- They are used up in the reaction.
- They are proteinaceous in nature.
- They speed up the rate of reaction.
- The amino acids present in enzymes are linked together by peptide bonds.
In plants, enzymes are present in
- flowers
- leaves
- stems
- seeds
- in all living cells
Fat is hydrolyzed by enzyme lipase to yield
- fatty acids and amino acids
- glycerol and fatty acids
- glycerin and water
- glycerol and amino acids
- only fatty acids
At temperature below freezing point, an enzyme is
- inactivated
- unaffected
- killed
- slightly activated
- first deactivated then killed