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QuestionBiology

"Which type(s) of transport require energy? SELECT ALL THAT APPLY A. Exocytosis B. Endocytosis C. Facilitated diffusion"
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Step 1:
I'll solve this problem step by step, focusing on the types of cellular transport that require energy.

Step 2:
: Understanding Cellular Transport

Cellular transport mechanisms can be classified into two main categories: - Passive transport (does not require energy) - Active transport (requires energy)

Step 3:
: Analyzing Exocytosis

Exocytosis$$ is a process where vesicles fuse with the plasma membrane to release their contents outside the cell.
- This process requires energy (ATP) - Involves protein machinery and ATP-dependent mechanisms - REQUIRES ENERGY: ✓

Step 4:
: Analyzing Endocytosis

Endocytosis$$ is a process where the cell membrane invaginates to bring materials into the cell.
- Includes mechanisms like phagocytosis and pinocytosis - Requires energy for vesicle formation and movement - REQUIRES ENERGY: ✓

Step 5:
: Analyzing Facilitated Diffusion

Facilitated~diffusion$$ is a passive transport process
- Uses membrane proteins to help molecules cross - Does NOT require energy - DOES NOT REQUIRE ENERGY: ✗

Final Answer

A and B (Exocytosis and Endocytosis) require energy.