Question

1. what is osmosis? 2. does it require energy? what type of transport is osmosis? 3. does water move from high solute to low solute or low solute to high solute? 4. what is a hypertonic solution? what does a cell in a hypertonic solution do? 5. what is a hypotonic solution? what does a cell in a hypotonic solution do? 6. what is an isotonic solution? what does a cell in an isotonic solution do? 7. draw a before and an after osmosis pic of a cell in hypertonic, hypotonic, and isotonic solutions at the bottom left. 1. the movement of water before after hyper - o shrinks iso - o same hypo - o swells

Explanation:

1. Osmosis is the movement of water across a semi - permeable membrane from an area of low solute concentration to an area of high solute concentration. It is a passive transport process and does not require energy.
2. Water moves from low solute to high solute during osmosis.
3. A hypertonic solution has a higher solute concentration than the cell. A cell in a hypertonic solution will lose water and shrink.
4. A hypotonic solution has a lower solute concentration than the cell. A cell in a hypotonic solution will gain water and may swell or burst.
5. An isotonic solution has the same solute concentration as the cell. A cell in an isotonic solution will maintain its shape as there is no net movement of water.

Answer:

1. Osmosis is the diffusion of water across a semi - permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
2. It does not require energy. It is a form of passive transport.
3. Water moves from low solute to high solute.
4. A hypertonic solution has a higher solute concentration than the cell's interior. A cell in a hypertonic solution will shrink due to water loss.
5. A hypotonic solution has a lower solute concentration than the cell's interior. A cell in a hypotonic solution will swell as it gains water.
6. An isotonic solution has the same solute concentration as the cell's interior. A cell in an isotonic solution will remain the same size as there is no net water movement.
7. (Explanation of drawing): For a hypertonic solution, the cell before osmosis is of normal size and after osmosis it shrinks. For an isotonic solution, the cell remains the same size before and after. For a hypotonic solution, the cell is of normal size before and swells after osmosis.