The amount of an enzyme that will catalyze the reaction of 1 micromole of substrate in 1 minute defines what unit of activity?

The enzyme unit

Explanation:

Enzymes are catalyst, meaning that they make chemical reactions faster.

For measuring the catalytic activity of an enzyme there are two common units The enzyme unit and The Katal.

The first one is defined as the amount of enzyme that catalyzes the reaction of 1 micromole of substrate in a minute, on the other hand the katal is give for 1 mole per second. Since 1 mol is a huge amount in terms of enzymes, it is usually use the prefix nano- (10^-9).

1 U = 16.67 nKat if you need a conversion factor.

Hope it helps!

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance