2a. Which of these substances is not found inthe cell membrane?
- fatty acids
- chitin
- cholesterol
- phospholipids
2b. In the past meat was preserved by coating it with salt. Onereason that this worked was that the salt, with a little bit ofwater, is __________relative to bacteria, and water would move_________ the bacteria killing them (hint: think beefjerky!!!!).
- hypertonic; into
- hypotonic; into
- hypertonic; out of
- hypotonic; out of
2c. Solution A 10% salt, is compared to Solution B, 5% salt.Solution A is
- hypo-osmotic
- isotonic
- hypotonic
- hypertonic
2e. Food coloring added to a container of water will eventuallybecome evenly distributed even without stirring due to
- diffusion
- active transport
- exocytosis
- facilitated diffusion
- 2f.A hypertonic solution as compared to a hypotonic solutionunder the same conditions has
- more, dissolved solutes
- the same number of water molecules
- a higher hydrostatic pressure
- a higher water potential
- 2g.Movement of individual dye molecules as they are distributedthroughout a tank of water
- is a random process
- results in the accumulation of dye molecules at one end of thetank
- is always against the concentration gradient
- results from differences in gravity, pressure, or both
