Unit2.1 Flashcard2 - Cell Transport

Front

What is osmosis?

Back

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

Front

What is an 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 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, potentially leading to swelling or bursting.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell, leading to shrinkage.

Front

Define concentration in terms of solutions.

Back

Concentration is defined as the mass of solute divided by the volume of solution.

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of a membrane, resulting in no net movement.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (usually in the form of ATP).

Front

What role do cell membranes play in transport?

Back

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

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.