Cellular Processes Requiring Respiratory Energy

Steps:

• Respiration produces ATP, the cell's energy source for active processes.
• Active transport uses ATP to move molecules against gradients.
• Diffusion moves molecules down gradients passively, without energy.
• Osmosis is passive water movement, no energy needed.
• Cell division requires ATP for chromosome movement and cytokinesis.

Why B is correct:

• Active transport and cell division directly consume ATP from respiration, per cellular energy definitions, while diffusion and osmosis are passive.

Why the others are wrong:

• A: Erroneously marks osmosis as energy-using and cell division as not.
• C: Incorrectly excludes active transport from energy use.
• D: Falsely denies energy for all processes, ignoring active transport and division.

Final answer: B