uses energy stored in ATP to synthesize  and assemble sub units

small to big

produces energy

big to small

lowers the activation energy of a rxn

its a protein that functions as a catalyst

speeds up rxn

facilitates each step in the metabolic pathway

accelerates the conversion of a substrate to a product

increased temp increases the speed of the rxn

extremely high temp makes enzyme non-functional

most enzymes work best at a pH slightly over 7

slightly basic

competeing for active site with substrate

structually similar to substrate

example: sulfa drugs compete with PABA on enzyme that produce folic acid

inhibitor and substrate work on different enzyme sites

non competitive inhibition

alters configuration of the enzymes active site and subtrate wont fit and enzyme is not active

Adrenosine triphosphate

molecule of energy

main energy carrier in cells

can give up phosphate group to another molecule and transfer energy

couples energys imputs and outputs

1) glycolysis

2) TCA cycle

3) respiration

usually occurs when there is a lack of oxygenor lack of electron transportation chains

ATP is only produced in glycolysis; only 2