Which part of the cell membrane can catalyze chemical reactions

The chemical reaction is catalyzed by enzymes. Enzymes can be defined as the chemical substances that is used to increase the rate of reaction.

Explanation:

The enzymes does not takes part in the chemical reaction but increases he rate of reaction.

Enzymes binds with the substrate and forms a complex that is converted into the product after reaction. The enzyme is released back to be used again.

the correct option is option d

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.