8.3 Cell transport and homeostasis

The border of a nation is similar to a cells

• Nucleus

• Cell membrane

• Cytoplasm

• Ribosomes

Diffusion is the process by which molecules move from an area of low concentration to high concentration.

• True

• False

Passive transport requires cellular energy.

• True

• False

Facilitated diffusion is an example of

• Active transport

• Passive transport

How does water enter the cell?

• simple diffusion

• through an aquaporin

• active transport

• endocytosis

Osmosis

• requires energy

• is the movement of water against a concentration gradient.

• is the diffusion of water across a semi-permeable membrane.

A solution in which molecules move in and out of the cell

• Hypertonic

• Isotonic

• Hypotonic

• Homeostasis

A hypertonic solution

• causes the movement of water to go in to the cell

• causes the movement of water to go in and out of the cell

• causes the movement of water to go out of a cell

• has no movement of water

A hypotonic solution

• causes water to leave the cell

• causes water to enter and leave the cell

• causes water to enter the cell

Active transport is

• the movement of molecules from high to low concentration

• the movement of molecules from low to high concentration