Related Questions
What is the term for the molecule upon which an enzyme acts?
Product
Substrate
Inhibitor
Cofactor
All enzymes are basically
Carbohydrates
Steroids
Proteins
Lipoproteins
Which factor does NOT generally affect enzyme activity?
Temperature
pH
Substrate concentration
Light intensity
The active site of an enzyme is:
The entire enzyme molecule.
The region where the substrate binds.
A non-protein component.
An inhibitor binding site.
If a prosthetic group is removed from a holoenzyme, what is the remaining protein component called?
Holoenzyme
Apoenzyme
Coenzyme
Zymogen
Identify the incorrect statement.
Apoenzyme is the protein part of holoenzyme
Cofactor is the non-protein part of holoenzyme
Enzyme increases the rate of the reaction by lowering the activation energy
Enzyme decreases the rate of the reaction by lowering the activation energy
An enzyme extract when subjected to electric field, separates into two fractions each catalyzing the same reaction. These fractions are
Allosteric enzymes
Isoenzymes
Inducible enzymes
Coenzymes
An example of feedback inhibition is
Cyanide action on cytochrome
Sulpha drug on folic acid synthesizer bacteria
Allosteric inhibition of hexokinase by glucose 6-phosphate
Reaction between succinic dehydrogenase and succinate
The 'lock and key' model of enzyme action describes:
The flexibility of the enzyme's active site.
The specific fit between enzyme and substrate.
The change in enzyme shape upon substrate binding.
The allosteric regulation of enzyme activity.
The inhibitor which binds to the enzyme at site other than the active site and do not resemble the substrate in structure is called
Activator
Substrate analogue
Competitive inhibitor
Non-competitive inhibitor
