← KCOGGS Test
5 Written Questions
5 Matching Questions
- What is feedback inhibition?
- What is a competitive inhibitor?
- What is osmoregulation
- What is passsive transport?
- What is ATP?
- a 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 (?)
- b A chemical that resembles the enzymes normal substrate, binds to active sight, irreversible
- c Adenosine Triphosphate, powers nearly all forms of cellular work
- d The way of an plant/animal to prevent excessive uptake or excessive loss of water
- e The diffusion of molecules across the biological membrane, requires no work
5 Multiple Choice Questions
- The protein receives the solute, ATP phosphorylates the protein, the protein changes shape which causes the solute to be launched on the other side of the membrane where it is more concentrated
- Exergonic reaction
- Enzymes, and Because enzymes act as biological catalysts that increases the rate of a reaction without itself being changed into a different molecule, smushes down energy barrier
- Because plants have cell walls which make it harder for the solution to take effect, need more of it
- The diffusion of water across a selectively permeable membrane
5 True/False Questions
What is an example of an enzyme inhibitor? → Many poisons, pesticides, and drugs
What is a hypertonic solution? → A solution whose pH is lower than that of the cells, cell gains water, pops
What is the problem with the concept of energy of activation? → The amount of energy the reactants must absorb to become active and start a chemical reaction/get over the energy barrier
What is a hypotonic solution? → A solution whose pH is lower than that of the cells, cell gains water, pops
What is a receptor protein? → A specific reactant that an enzyme reacts on, fits into the active sight