Chap 3 - Transport & Digest (unfinished)

What are the 3 ways we transport large molecules across the membrane?

• passive

• active

• vesicular

4 parts of Passive transport

• simple

• channel

• carrier

• osmosis

What is included in faciliated diffusion

• channel

• carrier

characteristics of Simple transport

• No integral proteins involved

• movement of lipid soluble substances DOWN the concentration gradient

• Diffusion - high to low

characteristics of channel

• ions , Na+, K+

• needs assistance to cross membrane

• integral proteins DO help

• diffuses DOWN the gradient

Chacteristics of carrier

• lipid soluble

• has glucose, amino acids

• can regulate when shape changes

characteristic of osmosis

• moving WATER only

Diffusion

movement from high to low concentration

The rate of diffusion is affected by what?

• gradient

• temperature

• particle size

• distance (greater distance = slower diffusion)

What increases chaos?

diffusion

Water moves towards the area of a _____

higher solute concentration

difference between diffusion and osmosis

osmosis is about water & diffusion is about solute

What process has a semipermeable membrane and moves low to high?

osmosis

What process moves high to low?

diffusion

Isotonic solution

same solute concentration as the cytosol (nothing happens to the cell)

Hypertonic solution

greater solute concentration than the cytosol (skinny cell)

Hypotonic solution

lesser solution concentration than cytosol (fat cell)

What are the two types of active transport

primary active transport & secondary active transport

ATP helps manipulate _______

the shape of the protein

Secondary activie transport requires what?

energy (BUT NOT ATP)

Pottasium is on the ______ and Sodium Chloride is on the _____

inside; outside