6. The Membrane
Concentration Gradients and Diffusion
6. The Membrane
Concentration Gradients and Diffusion
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- Multiple Choice
Which of the following statements about diffusion is true?
7853views58rank - Textbook Question
A substance moving across a membrane against a concentration gradient is moving by ________.
a. Passive transport
b. Osmosis
c. Facilitated diffusion
d. Active transport
e. Diffusion
1999views - Multiple ChoiceWhat is a concentration gradient in the context of diffusion?357views
- Multiple ChoiceWhat role do transport proteins play in the process of facilitated diffusion across a cell membrane?226views
- Multiple ChoiceWhich cell size is the most efficient at exchanging materials with the environment due to concentration gradients and diffusion?183views