Chapter 6

Question 1

CC Membrane Components

Answer 1

1. Phospholipid bilayer forms SPONTANESOULSY
2. Membrane Proteins
   Determine Membrane functions
   Move only laterally
3. Membrane Protein Functions
   Transport
   Enzymes
   Signal transduction

Question 2

CC Types of membrane Transport (2)

Answer 2

Passive
Active

Question 3

Passive Transport (NO ATP Required) (Goes down with gradient)

Answer 3

1. Simple diffusion
   Small gases: O2, CO2, N2, nonpolar, and uncharged molecules
2. Osmosis
   Water travels to more solute
   Hypertonic: Sucked
   Isotonic: =
   Hypotonic: Bloated
3. Facilitated diffusion (uses proteins)
   Carries large molecules (H+ Na+ Ca2+)
   Channel Protein (Tunnel)
   Carrier Protein (grabber)

Question 4

Active Transport (ATP Required) (Goes against the gradient)

Answer 4

1. Pump/Carrier
   Require ATP
   sodium/potassium pumps
2. Bulk Transport
   Requirement ATP
   Moves large molecule at once

Exocytosis “Out”
Vesicles Fuses with PM and release contents
Fusing is one way to grow PM

Endocytosis “In”
Vesicle form with PM and brings contents

Phagocytosis “Eating”
Pinocytosis “drinking”
Receptor-mediated “specific”