SCIENCE enzymes

science exam yay

what are enzymes also known as

biological catalysts

what type of molecules are they

protein

what are enzymes?

biological catalysts that change the rate of the reactions that occur in living things

how many enzymes for one reaction

one enzyme for one reaction

what changes the the shape of an active site

high temperatures change the shaoe of active sites

what chemical does enzymes act on

enzymes act on a chemical called substrates which fits into the active site where a chemical reaction occurs

process of a enzyme chemical reactiob

enzyme + substrate - enzyme-substrate complex - enzyme and products

what factors affect enzyme levels

temperature, PH levels and substrate concentration affect enzyme levels

where do enzymes work best

enzymes work best in their optimal temperature range

enzyme rate at temperature:

at a low temperature the rate of the enzyme slows down while when the temperature increase, the enzyme activity increases to an optimal temp.

what happens when the temperature exceeds the optimal temperature?

when the temperature exceeds its optimal temp, the enzyme become de-natured - can no longer act on substrate substances

what do PH levels affect

PH levels affect enzyme activity by affecting the structure of the enzymes themselves, extreme PH levels causes the enzyme to become denatured

how does substrate concentration affect enzyme activity

at low concentration, the reaction rate is low, as you increase the amount of substrate, the reaction rate increases until the point of saturation