Biology Cell Transport

Movement of particles through the cell membrane
 from high to low

• diffusion
• photosynthesis
• mitochandria

Against the concentration gradient
low to high
uses energy/ATP

• facilitated diffusion
• osmosis
• active transport

Allows certain molecules or ions to pass through it by diffusion and doesn't allow others.

• protein
• semi-permeable membrane
• isotonic

Equal percentage of solutes inside and out. 
Concentration of substances is the same. 

• hypotonic
• equilibrium
• nucleus

Tags

NGSS.HS-PS1-6

Particles are too large to enter the membrane.
Need help from channel proteins.
No energy

• active transport
• passive transport
• facilitated diffusion

Diffusion of water across a cell membrane
high to low.

• osmosis
• active transport
• protein channel

Engulfs large molecules inside the membrane.
uses energy

• exocytosis
• endocytosis
• protein channel 

Movement of large substances outside of cell. 
Uses energy. 

• exocytosis
• endocytosis
• photosynthesis

High concentration of water.
cell will explode

• hypotonic
• hypertonic
• isotonic

Tags

NGSS.HS-LS1-3

Low concentration of water.
Cell will shrink

• hypotonic
• hypertonic
• isotonic