Question

One of the many remarkable enzymes in the human body is carbonic anhydrase, which catalyzes the interconversion of carbon dioxide and water with bicarbonate ion and protons. If it were not for this enzyme, the body could not rid itself rapidly enough of the CO2 accumulated by cell metabolism. The enzyme catalyzes the dehydration (release to air) of up to 107 CO2 molecules per second. Which components of this description correspond to the terms enzyme, substrate, and turnover number?

Answer 1

Carbonic anhydrase is the enzyme that catalyzes the interconversion of CO2 and water to bicarbonate ion and protons. The turnover number of carbonic anhydrase is 107 CO2 molecules per second.

Step-by-step explanation:

The enzyme in question is carbonic anhydrase.

The substrate in this case is carbon dioxide (CO2) and water (H2O), which are interconverted by the enzyme into bicarbonate ion (HCO3-) and protons (H+).

The turnover number refers to the number of substrate molecules transformed per unit time by a single enzyme. In the case of carbonic anhydrase, its turnover number is 107 CO2 molecules per second.

Answer 2

Enzyme is carbonic anhydrase

Substrate is
`CO_2`

Turnover number is
`10^(7)`

Step-by-step explanation:

An enzyme is used by a living organism as a catalyst to perform a specific biochemical reaction.

A substrate is a molecule upon which an enzyme acts.

Turnover number refers to the number of substrate molecules transformed by a single enzyme molecule per minute. Here, the enzyme is the rate-limiting factor.

Here,

Enzyme is carbonic anhydrase

Substrate is
`CO_2`

Turnover number is
`10^(7)`