PBS Semester 1 Final Review

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What type of solution causes a cell to shrink?

Back

A hypertonic solution causes a cell to shrink because it has a higher concentration of solutes compared to the inside of the cell.

Front

Which organelle is responsible for photosynthesis?

Back

The chloroplast is the organelle responsible for photosynthesis in plant cells.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is an isotonic solution?

Back

An isotonic solution has the same concentration of solutes as the inside of the cell, resulting in no net movement of water.

Front

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, leading to water moving out of the cell.

Front

What is the role of the cell wall?

Back

The cell wall provides structural support and protection to plant cells, but it is not involved in photosynthesis.

Front

What is the function of mitochondria?

Back

Mitochondria are the organelles that produce energy (ATP) through cellular respiration.

Front

What is the significance of maintaining isotonic conditions in cells?

Back

Maintaining isotonic conditions is crucial for cell stability and function, preventing excessive swelling or shrinking.

Front

How does osmosis differ from diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any substance from an area of higher concentration to an area of lower concentration.