Question

all transport through the plasma membrane can be classified as ________.
options:
either diffusion or osmosis
either permeable or impermeable
either active or passive
either pinocytosis or phagocytosis
i dont know yet

Explanation:

To solve this, we analyze each option:

• Option 1: Diffusion and osmosis are types of passive transport, not all transport. Eliminate.
• Option 2: Permeable/impermeable describe membrane properties, not transport types. Eliminate.
• Option 3: Plasma membrane transport is classified as active (requires energy, e.g., ion pumps) or passive (no energy, e.g., diffusion). This covers all transport.
• Option 4: Pinocytosis/phagocytosis are types of endocytosis (a type of active transport), not all transport. Eliminate.

Answer:

C. either active or passive