Active Transport Worksheet
Grade 11 Science worksheet on active transport, covering its mechanisms, energy requirements, and examples in biological systems.
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Active Transport Worksheet
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Read each question carefully and answer to the best of your knowledge. This worksheet assesses your understanding of active transport in biological systems.
1. Which of the following best describes active transport?
Movement of molecules down their concentration gradient without energy.
Movement of molecules against their concentration gradient using energy.
Movement of water across a semipermeable membrane.
Movement of molecules facilitated by channel proteins.
2. What is the primary energy source for active transport?
Sunlight
Glucose
ATP
Heat
3. Active transport requires specific protein carriers called to move substances across the membrane.
4. The Na+/K+ pump is an example of active transport.
5. In active transport, the energy comes directly from ATP hydrolysis.
6. Active transport moves substances from an area of high concentration to an area of low concentration.
True
False
7. Secondary active transport uses the energy stored in an electrochemical gradient.
True
False
8. Briefly explain the difference between primary active transport and secondary active transport.
9. Give two examples of active transport in living organisms and explain their importance.
Use the words below to complete the sentences.
10. Active transport moves molecules their concentration gradient.
11. The energy for secondary active transport often comes from a pre-existing .