Cell Transport

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through various mechanisms such as diffusion, osmosis, and active transport.

Front

What are the three types of solutions that affect cell volume?

Back

Hypotonic (cell swells), Isotonic (cell remains the same), Hypertonic (cell shrinks).

Front

Define hypotonic solution.

Back

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

Front

Define isotonic solution.

Back

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

Front

Define hypertonic solution.

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to leave the cell.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances that are too large to enter through the cell membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles that fuse with the cell membrane.

Front

What is passive transport?

Back

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

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (ATP) to do so.

Front

What does semipermeable mean?

Back

Semipermeable means that a membrane allows certain substances to pass through while blocking others.