Movement of particles through the cell membrane from high to low concentrations

• diffusion
• photosynthesis
• mitochondria
• active transport

What type of transport is pictured here?

• endocytosis

• exocytosis

• facilitated diffusion

• osmosis

What type of transport is this? Be specific:

When water moves into a cell.

• facilitated diffusion

• endocytosis

• osmosis

• diffusion

What are the two main macromolecules in a cell membrane?

• carbohydrates & lipids

• lipids & proteins

• proteins & carbohydrates

• nucleic acids & lipids

What is the polarity of the different parts of the cell membrane?

• the heads are nonpolar; the tails are polar

• the heads are polar; the tails are nonpolar

• the heads and tails are nonpolar

• the heads and tails are polar

Give three examples of passive transport.

• diffusion, osmosis, phagocytosis

• facilitated diffusion, molecular pumps, osmosis

• osmosis, facilitated diffusion, diffusion

• exocytosis, molecular pumps, pinocytosis

Which form of cellular transport requires the use of energy?

• active transport

• passive transport

This example of passive transport is the diffusion of water.

• osmosis
• concentration gradient
• isotonic
• facilitated diffusion

Passive transport requires no

• concentration gradients

• osmosis

• motion

• energy

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall