EXAM 1: Review Points

Question 1

Sodium Potassium Pump (ATPace)

Answer 1

Na+ = 3 out
K+ = 2 in

Question 2

What is the ratio concentration of Potassium & Sodium (inside:outside)

Answer 2

Potassium (30:1)
Sodium (1:10)

Question 3

Why is it easier for potassium to move down its gradient?

Answer 3

potassium has a larger gradient

Question 4

Phospholipid bilayer (3)
-Structure & Function

Answer 4

glycolipids
glycoproteins
cholesterol

STRUCTURE: signal recognition particles
FUNCTION: synthesis of secreted or membrane bound particles

Question 5

Motor Proteins
-Structure & Function

Answer 5

STRUCTURE: polymers
FUNCTIONS: move materials within the cell

Question 6

Cytoskeleton proteins
-Structure & Function

Answer 6

STRUCTURE: filament system
FUNCTION: helps cells maintain shape

Question 7

Extracellular matrix
- Structure & Function

Answer 7

STRUCTURE: polysaccharides and proteins
FUNCTIONS: protects inside of cell

Question 8

ER: rough and smooth
- Structure & Function

Answer 8

Rough
STRUCTURE: ribosomes
FUNCTION: protein synthesis

Smooth
STRUCTURE: no ribosomes
FUNCTION: phospholipid synthesis, calcium storage, drug detox