Cells and Cell Transport

Front

What is the smallest unit of life?

Back

Cells are the smallest unit of life, capable of performing all life processes.

Front

What structure is responsible for transporting substances across the cell membrane?

Back

Transport or channel proteins facilitate the movement of substances across the cell membrane.

Front

What is diffusion?

Back

Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration, requiring no energy.

Front

What is the main difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells do not have a nucleus, while eukaryotic cells do.

Front

What is a cell wall?

Back

A cell wall is a rigid outer layer found in plant cells that provides structure and protection.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What are mitochondria?

Back

Mitochondria are organelles in eukaryotic cells that produce energy through cellular respiration.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from the outside environment, bringing them into the cell.

Front

What is the function of a receptor protein?

Back

Receptor proteins bind to specific molecules (ligands) and initiate a cellular response.

Front

What is the role of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.