Cell Transport Mechanisms: Passive Versus Active Explained

Cell transport involves moving substances across the cell membrane, categorized into passive and active transport. Passive transport, like diffusion, occurs without energy, moving particles from high to low concentration. Active transport requires energy to move particles against the concentration gradient, from low to high concentration, as seen in heart muscle cells. Key points include passive transport's energy-free nature and active transport's energy requirement.

What is the main characteristic of passive transport?

• It occurs automatically without energy.

• It moves particles from low to high concentration.

• It requires energy input.

• It involves protein pumps.

Which process is an example of passive transport?

• Osmosis

• Diffusion

• Endocytosis

• Exocytosis

What is required for active transport to occur?

• No energy

• Energy input

• High concentration gradient

• Low concentration gradient

In active transport, particles move from:

• Inside to outside the cell

• Low to high concentration

• Outside to inside the cell

• High to low concentration

Why is active transport important in heart muscle cells?

• To produce oxygen

• To store energy

• To allow the heart to beat

• To maintain a constant temperature

What is the key difference between passive and active transport?

• Neither requires energy.

• Passive transport requires energy, active does not.

• Both require energy.

• Active transport requires energy, passive does not.