<h2>Answer and Explanation </h2>
Passive transport is the movement of molecules across the cell membrane without inputting any energy. There are three main Types of passive transport which are diffusion, osmosis and facilitated diffusion. Osmosis and diffusion both are passive transport because the movement does not require any input of energy the only difference in the osmosis and diffusion is solute is also move with a solvent in diffusion while in osmosis only the solvent particles move.
Answer: a. Aerobic respiration, b. Anaerobic respiration.
Explanation: Oxygen is an essential component for aerobic respiration because it is at the end of the electron transport chain, where it accepts electrons and picks up protons to give out water.
The final acceptor of electrons in the electron transport chain during aerobic respiration is oxygen.
The final electron acceptor in the Anaerobic respiration are inorganic molecules such as sulfates. Inorganic molecules are used rather than Oxygen.
Oxygen
Maybe fruits and vegetables?? Those are important.