passive transport

Question 1

what is diffusion

Answer 1

small molecules (like oxygen and carbon dioxide) spread from high to low concentration

Question 2

what is facilitated diffusion

Answer 2

Large or charged molecules use protein channels to cross the membrane (e.g.,
glucose entering a cell)

Question 3

what is osmosis

Answer 3

Water moves from areas of high water concentration to low, balancing solute levels

Question 4

difference between:
1. hypertonic solution
2. hypotonic solution
3. isotonic solution

Answer 4

1. Water moves out, causing the cell to shrink
2. Water moves in, causing the cell to swell
3. Water moves equally in and out—cell remains stable

Question 5

what is passive transport

Answer 5

Passive transport flows with the concentration gradient (no energy required)