Unit 3 Cell Transport

Front

What is the most abundant macromolecule in the cell membrane that contributes to its structure and function?

Back

Lipids

Front

What type of transport do Protein Pump, Exocytosis, and Endocytosis represent?

Back

Active transport

Front

Which macromolecule is primarily responsible for storing genetic information?

Back

Nucleic acids

Front

What is the term for the movement of matter across a cell membrane against a concentration difference, and what does it require?

Back

Active transport requires ATP (energy).

Front

What process describes the movement of a substance (like salt) from high to low concentration across a cell membrane?

Back

Diffusion.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy (ATP).

Front

What is active transport?

Back

The movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What role do proteins play in the cell membrane?

Back

Proteins assist in transport, act as receptors, and provide structural support.

Front

What is facilitated diffusion?

Back

A process that allows substances to cross membranes with the assistance of special proteins.