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Questions and Answers
Which of the following is NOT a molecule that constantly moves in and around cells and their organelles?
Which of the following is NOT a molecule that constantly moves in and around cells and their organelles?
- Carbon dioxide (correct)
- Water
- Proteins
- Oxygen
What is the function of the cell membrane?
What is the function of the cell membrane?
- To allow all materials into and out of the cell
- To regulate the cell's internal temperature
- To prevent all materials from entering and leaving the cell
- To selectively allow some materials into and out of the cell (correct)
How do materials move in and out of the cell through passive transport?
How do materials move in and out of the cell through passive transport?
- By actively pumping against the concentration gradient
- By moving from an area of high concentration to an area of low concentration (correct)
- By moving from an area of low concentration to an area of high concentration
- By using energy from ATP
When does passive transport occur?
When does passive transport occur?
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Which of the following is an example of passive transport?
Which of the following is an example of passive transport?
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