Key Area 2.1- Metabolism Flashcards
Metabolic activity that requires energy input and builds up complex molecules.
Anabolic
Metabolic activity that releases energy in breakdown reactions.
Catabolic
Small membrane-bound region of a cell.
Compartment
Enzyme-controlled sequence of chemical reactions in cells.
Metabolic pathway
Total of all metabolic pathways in an organism.
Metabolism
Membrane of a cell made from fluid phospholipid molecules and proteins.
Phospholipid membrane
Small gap in a membrane created by a channel-forming protein.
Pore
Protein in a phospholipid membrane that carries substances across it by active transport.
Pump
Input of energy required to start a chemical reaction.
Activation energy
Region on an enzyme molecule where the substrate binds.
Active site
The slowing of reaction rate due to the presence of a substance resembling the substrate.
Competitive inhibition
Enzyme inhibition caused by the presence of an end product of a metabolic pathway acting as an inhibitor of the pathway.
Feedback inhibition
Change to an enzymes active site brought about by its substrate.
Induced fit
Enzyme inhibition by a substance that permanently alters the active site of an enzyme.
Non-competitive inhibition
Substance resulting from an enzyme-catalysed reaction.
Product
