BIPN100 Sheet 1

BIPN100 Sheet 1 - Patricia Pepa OH: Friday 11-1150AM Caf...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Patricia Pepa OH: Friday 11-1150AM Café Roma BIPN 100: Handout 1 I. 3 TYPES OF DIFFUSION a. Simple Diffusion i. Diffuse directly across the phospholipids bilayer of cell ii. Lipid-soluble molecules pass 1. Examples a. _________________________________________ iii. Ficks Law of Diffusion 1. Based on 2 factors: ________________________________ 2. Flux = ( C x Area x Δ Diffusion Coefficient)/thickness a. C Δ =concentration gradient b. More area=more molecules able to permeate c. D = lipid solubility/ (molecular weight^(1/2) x viscosity) b. Facilitated Diffusion i. Passive transport via transport proteins ii. Channels: Channel Type What’s unique about it? Example Leak Aquaporins for osmosis K + leak channel ligand- gated Neurotransmitter s Ach with Na + channel voltage- gated Voltage-gated-K + channels and Na+ channels for action potentials temperatur e-gated Heat receptor mechanical ly-gated Knee Jerk Stretch reflex c. Active Diffusion i. Particles moving across membrane against concentration gradient ii. Primary-uses ATP
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

BIPN100 Sheet 1 - Patricia Pepa OH: Friday 11-1150AM Caf...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online