Metabolism (Transport/Enzymes/ATP) Flashcards
Three types of transport across plasma membranes…
Passive transport. Facilitated diffusion. Active transport.
Passive transport
Diffusion, osmosis.
Hypotonic, hypertonic, and isotonic solutions.
Hypotonic- more solutes outside
Hypertonic - more solutes inside
Isotonic - even amount of solutes inside and out
Facilitated diffusion
Specialized proteins embedded in membrane permit passage of substances of a particular snap and size without using energy.
Active transport
Requires ATP to change the shape and size of embedded proteins in order to all passage.
Plasma membranes are made out of…
Phospholipids, proteins, Cholesterol carbohydrates
Enzyme’s purpose:
Lower activation energy in chemical reactions. (Act as catalysts)
Enzymes end with the letters:
Ase
Each enzyme has a uniquely shaped surface called:
Active site
Each enzyme connects to a particular substance called a:
Substrate
When a substrate is in an active site the combination of the two is:
The Enzyme Substrate Complex
Enzymes can link two substances together or…
Break them apart
Some enzymatic reactions require a non-protein substance called a… They allow a substrate to fit in the active site
Cofactor I.e. ATP
Organic cofactors are called…
Coenzymes I. E. Vitamins
… Facilitate the enzyme’s reactions but are bound to the enzyme
Prosthetic Group
