Phospholipid Bilayer

Question 1

Fluid mosaic model

Answer 1

Consistent pattern; flexible. The head of the phospholipid is hydrophilic, while the tail is hydrophobic. Also the head is polar while the tail is nonpolar

Question 2

Membrane proteins

Answer 2

Embedded in membrane and flow among the lipids

Question 3

Transport proteins

Answer 3

Channels and pumps that move materials across the membrane

Question 4

Carbohydrates

Answer 4

Chains that act like a chemical ID card so cells can identify one another

Question 5

Diffusion. Passive transport

Answer 5

Movement of molecules from one area of high concentration to low concentration; spreading out.

Question 6

Facilitated diffusion, also passive transport

Answer 6

Larger molecules pass through the cell membrane with the help of a protein

Question 7

Osmosis, passive transport

Answer 7

Diffusion of water across a semi permeable membrane

Question 8

Isotonic solution

Answer 8

Concentration of solutes is equal, water flows back-and-forth equally in cell size does not change

Question 9

Hypertonic

Answer 9

Surrounding solution has a higher solute concentration than that inside of the cell. There’s less pure water outside of salsa water moves outward, cell shrivels

Question 10

Hypotonic

Answer 10

Surrounding solution has lower solute concentration than inside of the cell, there is more pure water outside the cells the water moves inward. Cell swells or bursts

Question 11

Active transport

Answer 11

When molecules move from low to high concentration, requires ATP energy, opposite of diffusion