Chapters 4-8

Question 1

hypertonic

Answer 1

water moves out of cells- shrinking it

Question 2

hypotonic

Answer 2

water moves in the cells - swells it

Question 3

isotonic

Answer 3

concentrations are equal

Question 4

6 functions of a plasma membrane

Answer 4

Transporter 
Enzyme
Cell to cell transmitter
Cell to cell adhesion
Cell to cytoskeleton
Cell identifiers

Question 5

why do phosopholipids are perfect for making membranes

Answer 5

The head of a phospholipid is hydrophilic and the tail is hydrophobic. The tail folds inwards to get away from water which makes it a very strong membrane.

Question 6

why do leave change colors in the fall

Answer 6

They change colors because chlorophyll a and chlorophyll b die out and that leaves just the carotenoids absorbing the blues/ violets leaving the plants to reflect yellow, orange, and red.

Question 7

what is photorespiration and how plants deal with is

Answer 7

Photorespiration happens when oxygen competes with CO2 in Rubisco. That produces toxins so the plants develop CY and CAM pathways to do photosynthesis. Cy- spatial CAM-Temporal