Biology EOC Review Set 10

Front

What is 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 active transport?

Back

Active transport is the process by which cells move materials from an area of low concentration to an area of high concentration, requiring energy.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What is the role of vacuoles in paramecium?

Back

Vacuoles in paramecium help to expel excess water that enters the organism, maintaining osmotic balance.

Front

What is the difference between passive transport 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 concentration gradient.

Front

What must occur during the cell cycle for proper chromosome division?

Back

The DNA of the cell must replicate to ensure that each daughter cell receives an identical set of chromosomes.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

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 significance of concentration gradients in cellular processes?

Back

Concentration gradients drive the movement of substances across membranes, influencing processes like osmosis and diffusion.

Front

What is the function of the cell membrane?

Back

The cell membrane protects the cell, provides structure, and regulates the movement of substances in and out of the cell.