Cellular Structure and Function

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 happens in a hypertonic environment?

Back

In a hypertonic environment, the concentration of solutes outside the cell is greater than inside, causing water to flow from the cell into the environment.

Front

What is a hypotonic environment?

Back

A hypotonic environment is one where the concentration of solutes outside the cell is less than inside, leading to water flowing from the environment into the cell.

Front

Where is DNA found in prokaryotic cells?

Back

DNA in prokaryotic cells is found loose in the cytoplasm, as they do not have a nucleus.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is the function of the cell wall?

Back

The cell wall provides support and structure to plant cells, helping to maintain their shape.

Front

What is the role of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane against their concentration gradient, requiring energy.

Front

What is an isotonic solution?

Back

An isotonic solution has equal concentrations of solutes inside and outside the cell, resulting in no net movement of water.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their gradient.