Unit 4 EOC Review Most Missed

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

Define isotonic solution.

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

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 or crenate.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a passive transport process where molecules move across a membrane via specific transport proteins, down their concentration gradient.

Front

Explain the role of the plasma membrane.

Back

The plasma membrane regulates what enters and exits the cell, maintaining homeostasis and protecting the cell's internal environment.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy (ATP) to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

Front

What occurs during cell division regarding chromosomes?

Back

During cell division, chromosomes are duplicated so that each daughter cell receives a complete set of chromosomes.

Front

Define 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 a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

What is the significance of ATP in cellular processes?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes, including active transport.