5 Written questions
5 Matching questions
- What is the energy of activation?
- Catalyctic cycle of an enzyme:
- What is an endergonic reaction?
- What are membranes made up of?
- What is diffusion?
- a The amount of energy the reactants must absorb to become active and start a chemical reaction/get over the energy barrier
- b 1. Substrate enters active sight, is fitted by induced fit 2. Broken up into products by hydrolysis 3. Released from enxyme
- c A reaction that requires energy, its products have more energy than its reactants, energy is absorbed through surroundings as reaction occurs, energy stored in covalent bonds of product molecules
- d Lipids, mostly phospholipids
- e The tendency for particles of any kind to spread out evenly in an available space, moving from where they are more concentrated to regions where they are less concentrated. Requires no work, random, kinetic energy
5 Multiple choice questions
- The binding of the protein to the message sets off a chain reaction involving other proteins which relay the message to a meolecule that performs a specific activity inside the cell
- The use of energy released from exergonic reactions to fuel necessary endergonic reactions
- PM allows some substances to cross more easily than others
- The amount a substance can diffuse down to until it reaches equilibrium
- The tendency of a cell in a given solution to lose or gain water
5 True/False questions
How does it switch to ADP? → The bonds that keep the three phosphates together are easily broken by hydrolysis, when the bond to the third group breaks the phosphate group leaves ATP which becomes ADP, and energy is released (?)
What is feedback inhibition? → Most chemical reactions are organized into a series of steps, each catalyzed by an enzyme, to form certain product. If product is being over-made, then the product will act as an inhibitor to one of the enzymes in its pathway, called feedback inhibition (?)
What is osmosis? → Adenosine Triphosphate, powers nearly all forms of cellular work
What is an exergonic reaction? → A reaction that requires energy, its products have more energy than its reactants, energy is absorbed through surroundings as reaction occurs, energy stored in covalent bonds of product molecules
What is an isotonic solution? → A solution whose pH is lower than that of the cells, cell gains water, pops