Question

1. osmosis is the diffusion of water across a selectively permeable membrane.
2. atp is the primary energy currency of the cell.
3. a cell will swell in a hypertonic solution.
4. feedback inhibition is a process that speeds up a metabolic pathway.
5. molecules always move from an area of low concentration to high concentration during passive transport.

extra credit (2 points)

1. the term \activation energy\ refers to the energy that is released during a chemical reaction.

part iii: fill in the blanks (2 points each, 40 points total)
instructions: complete each statement with the correct word or phrase on the answer sheet.

1. the two types of energy are and.
2. the term for all the chemical reactions that take place within a cell is
3. a reaction that releases energy is called an reaction.
4. a reaction that requires an input of energy is called an reacti
5. the movement of molecules from an area of high concentration to low concentration is called.
6. is the process where cells regulate a metabolic pathway by the end product inhibit an earlier enzyme in the pathway.
7. passive transport moves molecules from an area of to concentration.

Explanation:

1. The two types of energy are kinetic and potential energy. Kinetic is energy of motion, potential is stored energy.
2. Metabolism refers to all chemical reactions in a cell.
3. An exothermic reaction releases energy.
4. An endothermic reaction requires energy input.
5. Diffusion is the movement of molecules from high - to low - concentration.
6. Feedback inhibition is the process where the end - product inhibits an earlier enzyme in a metabolic pathway.
7. Passive transport moves molecules from an area of high concentration to low concentration.

Answer:

1. kinetic energy; potential energy
2. metabolism
3. exothermic
4. endothermic
5. diffusion
6. Feedback inhibition
7. high; low