6. The Membrane

What is a concentration gradient in the context of diffusion?

Which cell size is the most efficient at exchanging materials with the environment due to concentration gradients and diffusion?

How does the concentration of solute particles in a cell's environment affect the movement of water across the cell membrane?

Which of the following correctly completes the statement: The three main factors that affect diffusion are concentration, temperature, and ____?

Which of the following best describes the direction of diffusion across a concentration gradient?

Diffusion rate is fastest when the concentration gradient is:

Which of the following best describes facilitated diffusion?

The three main factors that affect the rate of diffusion are concentration, temperature, and which of the following?

Exchange of gases and nutrients occurs by diffusion between the __________.

Which of the following best describes a concentration gradient?

What is the relationship between cell size and the rate of nutrient absorption in cells?

Which of the following statements regarding diffusion is false?

Which of the following best describes the role of a concentration gradient in the process of diffusion?

Which choice best describes diffusion?

Which factor would increase the rate of diffusion across a cell membrane?