1) Concept 2 Notes - Cell Transport (Teach)

It helps organisms maintain stable internal conditions necessary for survival.

It allows organisms to reproduce more quickly.

It increases the size of organisms.

It prevents organisms from responding to environmental changes.

They use the output of a system to signal a change in input, stabilizing or amplifying the system response.

They only amplify the system response without stabilization.

They prevent any change in input to the system.

They regulate only the output of a system.

Human body temperature regulation

Fruit ripening

Blood sugar regulation

Human child birth

Cell membrane; controls movement of substances in and out of the cell

Nucleus; stores genetic material

Mitochondria; produces energy

Cell wall; provides structural support

Small, nonpolar, hydrophobic, and/or neutral molecules

Large, polar molecules

Ions

Proteins

Simple diffusion

Facilitated diffusion

Osmosis

Exocytosis

Diffusion

Osmosis

Active transport

Facilitated diffusion

It requires energy input from the cell.

It moves molecules from low to high concentration.

It uses transport proteins to move molecules across the membrane.

It only transports water molecules.

Large polar molecules

Small nonpolar molecules

Ions and small polar molecules

Proteins

Water moves from low to high concentration across a membrane.

Water moves from high to low concentration across a membrane.

Solute moves from high to low concentration across a membrane.

Solute moves from low to high concentration across a membrane.

It swells

It shrivels

It stays the same

It bursts

Isotonic

Hypotonic

Hypertonic

None of the above