9.2 cell activites

Question 1

Simple diffusion

Answer 1

takes susbtances and passes them through the membrane from high to low. needs small and nonpolar molecules to work.
ex.
- oxygen
- CO2

Question 2

Facilitated diffustion

Answer 2

takes substances and passes them through a protien channel found in the membrane. goes from high to low, and needs smaller molecules that can be charged to work.
ex.
- water
- glucose
- amino acids
- ions

Question 3

Active transport

Answer 3

takes substances and passes them through a protein “pump” or “port” with the use of ATP. transports substances from low to high, and needs smeller molecules that can be charged to work.
ex.
- water
- glucose
- amino acids
- ions

Question 4

Osmosis

Answer 4

the diffusion of water across a semi-permeable membrane to dilute higher solute concentrations.

Question 5

Hypertonic

Answer 5

Higher concentration of solute, less water.

Question 6

Hypotonic

Answer 6

Lower concentration of solute, more water.

Question 7

Exocytosis

Answer 7

The removal of substances in a cell with a vesicle.

Question 8

Endocytosis

Answer 8

Taking in substances by creating a pocket in the membrane the pinching it into a vesicle to bring it into the cell.

Question 9

Structure of a cell membrane`

Answer 9

Made of a selectively permeable lipid bilayer (look like little bobby pins and are very flexible)