Question

1. what is the basic unit of life for all living organisms?
2. compare the functions of the following organelles: nucleus and mitochondria

vacuoles and cell membrane

1. explain why diffusion and osmosis are important for a cell.

Explanation:

1. Nucleus: Controls cell activities, contains DNA. Mitochondria: Produces energy (ATP) for the cell. Vacuoles: Store substances like water, nutrients, waste. Cell - membrane: Regulates what enters and leaves the cell, provides protection.
2. Diffusion and osmosis are important for a cell as they allow for the movement of substances such as nutrients, oxygen, and waste products across the cell - membrane. Diffusion is the movement of solutes from an area of high concentration to low concentration, while osmosis is the movement of water across a semi - permeable membrane from an area of low solute concentration to high solute concentration. This helps maintain homeostasis and enables the cell to function properly.

Answer:

1. Nucleus: Controls cell activities, contains DNA. Mitochondria: Produces energy (ATP). Vacuoles: Store substances. Cell membrane: Regulates entry/exit, protects.
2. Allow movement of substances for homeostasis and cell function.