Cell Membranes - Lecture 7 Flashcards
Is hydrophilic polar or non polar
Polar
Is hydrophobic polar or non polar
Non -polar
Where is cell membrane found
It’s found in both animal and plant cell
What is a glycoprotein
Carbohydrate joined to a protein
What is a fluid mosaic
All these protein embedded within layer which creates a mosaic effectf
What is a glycolipid
A carbohydrate group with a lipid
If something is hydrophobic is it hard or easy to pass through
More easier to pass through
How phospholipids are arranged in plasma membrane
Bilayer
Hyrdrophobic fatty acids on inside
Polar phosphate groups in outside
What is simple diffusion
Movement of particles from high conc to a low gradient
Molecules move down a conc gradient
What is osmosis
Movement of water potential from high to low
Hypotonic
What is hypertonic
low water potential
What is facilitated diffusion
Larger molecules diffuse slower
Charged particles because they are water soluble
Channel protein for pores
Carrier proteinsn
What are co transporters
Type of carrier protein
Bind 2 molecules at a time
Conc gradient of one is moved to other molecules
Some substance can cross the cell surface membrane of a cell by simple diffusion through phospholipid bilayer
Describe other ways by which substance cross this membrane ?
Osmosis
Facilitated diffusion
Co transport
Active transport
Two ways which active transport is different from facilitated diffusion
Uses ATP
Against concentration gradient from low to high
