Cell Transport

Front

What is the function of the cell membrane?

Back

The cell membrane controls what substances may enter or leave the cell, helping maintain homeostasis.

Front

What type of cell transport involves the movement of substances into the cell via vesicles?

Back

Endocytosis.

Front

What is osmosis?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of molecules diffusing through a protein channel in the cell membrane, moving with the concentration gradient.

Front

What is active transport?

Back

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

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy and moves substances along the concentration gradient, while active transport requires energy and moves substances against the gradient.

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of specific molecules across the cell membrane, especially during facilitated diffusion.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance between two areas, influencing the direction of movement during diffusion.

Front

What is the significance of homeostasis in cells?

Back

Homeostasis is crucial for maintaining stable internal conditions, allowing cells to function optimally.

Front

What is the process of exocytosis?

Back

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