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Lecture Week 4
Terms & Definitions
13
Biology
Undergraduate 2
10/01/2012

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Cards

Term
Movement of material across a cell
Definition

Impermeable

Freely Permeable

Selectivity(Semi Permeable)

Term
Impermeable
Definition
nothing passes through
Term
Freely Permeable
Definition

Everything passes through

 

Term
Selectivity(Semi Permeable)
Definition
our cell decides what may enter and leave
Term
Phosopholipids
Definition
have a lollipop like structure
Term
Cholesterol
Definition
gives cell shape and strength
Term
Hydrophilic
Definition
attracted to water (heads of phosolipids)
Term
Hydrophobic
Definition
repel water (tails of phosolipids)
Term

Passive Movement

 

Definition
requires no ATP
Term
Active Movement
Definition
requires ATP molecule
Term
Passive Mechanisms
Definition

Diffusion

Faciliated Diffusion

Osmosis

Filtration

Term
Diffusion
Definition
moving from a high concentration to a low concentration until equilibrium is reached
Term
Facilitated Diffusion
Definition
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