Lecture 9 - Proteins and Transport

Question 1

Factors Affecting Diffusion Rates

Answer 1

→ Distance the particle has to move
→ Molecule Size
→ Temperature
→ Gradient Size
→ Electrical Forces

Question 2

Osmosis

Answer 2

spontaneous movement of water through selectively permeable barrier to equalize solute concentration

Question 3

Hypertonic Solution

Answer 3

Fluid outside has a lower concentration of water than inside

Question 4

Plants prefer what environment

Answer 4

hypotionic

Question 5

3 functions of active transport

Answer 5

Allows uptake of nutrients
Allows substances to be secreted
Allows cell to maintain specific non equilibrium intracellular ion concentration

Question 6

electrochemical gradient system used by plants, bacteria and fungi

Answer 6

proton pump

Question 7

3 types of endocytosis

Answer 7

phagocytosis
pinocytosis
recepter mediated endocytosis

Question 8

what is hydrostatic pressure?

Answer 8

water pressure