Differentiate between apoenzyme and prosthetic group.
An enzyme with its coenzyme, or prosthetic group, removed is designated as apoenzyme. If the non-protein part is covalently bonded to .enzyme, it is known as a prosthetic group e.g., FAD, FMN, haem.
How does low and high temperature affect enzyme activities? or Write the effect of temperature on enzyme action.
All enzymes can work at their maximum rate at a specific temperature called as optimum temperature. At low temperature the rate of reaction will be slow and with increase in temperature the rate of enzyme activity will increase up to a limit. High temperatures may denature or break down globular structure of the enzyme.
Differentiate between apoenzyme and holoenzyme.
An enzyme with its coenzyme, or prosthetic group, removed is designated as apoenzyme while an activated enzyme consisting of polypeptide chain and a cofactor is known as holoenzyme.
Write down any four characteristics of enzymes.
- The enzymes are globular proteins.
- They increase the rate of reaction without any damage to them.
- An enzyme can speed up the chemical reaction even in small amount.
- They are highly specific in their action. Usually a single enzyme catalyzes only a single substrate or a group of related substrates.
NOTES OF 1 YEAR