Unit 5 Review

Front

What organelle is responsible for processing and packaging materials for export from the cell?

Back

The Golgi apparatus (or Golgi body) is responsible for processing and packaging materials for export from the cell.

Front

What type of solution causes a cell to shrink?

Back

A hypertonic solution causes a cell to shrink due to a higher solute concentration outside the cell than inside.

Front

Which molecules can easily diffuse across the cell membrane?

Back

Small nonpolar molecules like oxygen (O₂) and carbon dioxide (CO₂) can easily diffuse across the cell membrane.

Front

What is the function of vacuoles in plant cells?

Back

Vacuoles store water and other substances, and are larger in plant cells than in animal cells.

Front

What happens to blood cells in a hypertonic solution?

Back

Blood cells will crenate (shrink) in a hypertonic solution.

Front

Define osmosis.

Back

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

Front

What is the difference between hypotonic and hypertonic solutions?

Back

A hypotonic solution has a lower solute concentration compared to the inside of the cell, causing the cell to swell, while a hypertonic solution has a higher solute concentration, causing the cell to shrink.

Front

What role do cell membranes play in cellular transport?

Back

Cell membranes regulate the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins, without the use of energy.

Front

What is the primary function of the cell nucleus?

Back

The cell nucleus houses the cell's genetic material (DNA) and controls cellular activities.