contestada

Which statement about enzymes is FALSE? Select one: a. Enzymes may be damaged by high temperature. b. Most enzymes can catalyze millions of reactions per minute. c. Enzymes require contact with substrate in order to assume their active form. d. Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements.

Respuesta :

akmalyounas

Answer:

(C) Enzyme does not need to contact with substrate to assume its active form.

Explanation:

a) The activity of an enzyme can be increased upto certain temperature known as optimum temperature after that tepmerature will damage the enzyme.

b) The number of substrate molecule converted by one molecule of enzyme in one second is called its turn over rate, which may varry from 0.5-600000.

C)  Enzymes does not need to contact with substrate to assume its active form. They just accelerate the reaction by lowering the activation energy. Enzyme binds to substrate through active stite and both changes structures slightly to best fit.(Induce fit  model)

  •    Enzyme + Sbstrate → enzyme substrate complex→ Enzyme + Product

D) Some enzymes are inactive known as apoenzyme and they need a non-protein part such as coenzyme or cofactor to become active which is known as holoenzyme.

The enzyme is the protein catalyst that is involved in increasing or decreasing the speed of metabolic reactions. Enzymes have an active site at them which interacts with the substrate to form a complex.

The false statement is:

Option (C) Enzyme does not need to contact the substrate to assume its active form.

This can be explained as:

  • The optimum temperature is the temperature at which the enzyme can functionally work, higher than this temperature will denature the enzyme.

  • Turn over rate is the rate by which the substrate molecule gets converted by an enzyme to form a complex.

  • The active site of the enzyme binds to the substrate and the shape of the site changes according to the confirmation of the substrate.

  • Co-enzymes are the factors required to activate some enzymes from the inactive state called apoenzyme.

Therefore, the statement is false.

To learn more about the properties of enzymes follow the link:

https://brainly.com/question/68083