Almost all enzymes are β¦ in nature
Lipids
Proteins
Carbohydrates
Nucleic Acid
Related Questions
Decline in the activity of the enzyme Hexokinase by glucose-6-phosphate is caused by
Non-competitive
Competitive inhibitors
Allosteric modulators
Denaturation of enzyme
If a prosthetic group is removed from a holoenzyme, what is the remaining protein component called?
Holoenzyme
Apoenzyme
Coenzyme
Zymogen
Enzyme often have additional parts in their structures that are made up of molecules other than proteins. When this additional chemical part is an organic molecule, it is called
Cofactor
Coenzyme
Substrate
Both (a) and (b)
In the Krebs cycle, the conversion of succinate to fumarate is catalyzed by succinic dehydrogenase. If malonate is added, what effect would it have on the rate of this reaction?
Increase the rate
No effect
Denature the enzyme
Decrease the rate
Which statement correctly describes the relationship between enzymes, coenzymes, and prosthetic groups?
Coenzymes are loosely bound organic molecules that aid enzyme function, while prosthetic groups are tightly bound non-protein molecules essential for enzyme activity.
Coenzymes are proteins that enhance enzyme activity, while prosthetic groups are lipids that inhibit enzyme activity.
Prosthetic groups are loosely bound inorganic molecules that aid enzyme function, while coenzymes are tightly bound protein molecules essential for enzyme activity.
Enzymes, coenzymes, and prosthetic groups are all types of proteins that catalyze biological reactions.
Which of the following is not a coenzyme?
NAD
NADP
FAD
ATP
Which of the following is NOT a step in the catalytic cycle of an enzyme?
Substrate binding to the active site.
Release of products.
Formation of the enzyme-substrate complex.
Denaturation of the enzyme
Which of the following is an isozyme?
Ξ±-amylase
Glucokinase
Lactic dehydrogenase
All of these
A physical change, during a chemical reaction refers to
Change in shape without breaking of bonds
Change in state of matter
Change in the bond energy during the chemical reaction
Both (a) and (b)
The substance, which is metal ion essential for the normal functioning of enzyme is called
Cofactor
Coenzyme
Holoenzyme
None of these
