Cells

Front

What is a cell?

Back

The basic unit of structure and function in all living organisms.

Front

What are the two main types of cells?

Back

Prokaryotic and Eukaryotic.

Front

What is a prokaryotic cell?

Back

A type of cell that does not have a nucleus or other membrane-bound organelles, e.g., bacteria.

Front

What is a eukaryotic cell?

Back

A type of cell that has a nucleus and membrane-bound organelles, e.g., plant and animal cells.

Front

What is the cell theory?

Back

A fundamental concept in biology that states: 1) All living things are composed of cells, 2) Cells are the basic unit of structure and function in living things, 3) All cells come from pre-existing cells.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy, e.g., diffusion.

Front

What is active transport?

Back

The movement of substances against their concentration gradient, requiring energy, e.g., sodium-potassium pump.

Front

What is a hypertonic solution?

Back

A solution that has a higher concentration of solutes compared to the inside of the cell, causing the cell to shrink.

Front

What is a hypotonic solution?

Back

A solution that has a lower concentration of solutes compared to the inside of the cell, causing the cell to swell.

Front

What is an isotonic solution?

Back

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