Cells and Cell Transport

Front

What is the function of a transport or channel protein in a cell?

Back

Transport or channel proteins facilitate the movement of substances across the cell membrane, allowing specific molecules to enter or exit the cell.

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 a cell wall and which type of cells have it?

Back

A cell wall is a rigid outer layer that provides structure and protection to plant cells; it is not found in animal cells.

Front

What is the rough endoplasmic reticulum?

Back

The rough endoplasmic reticulum is an organelle studded with ribosomes, involved in protein synthesis and processing.

Front

What is the plasma (cell) membrane?

Back

The plasma membrane is a selectively permeable barrier that controls the movement of substances in and out of the cell.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy (ATP) to occur.

Front

What is endocytosis?

Back

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

Front

What are lysosomes?

Back

Lysosomes are organelles that contain digestive enzymes to break down waste materials and cellular debris.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell, generating ATP through cellular respiration.

Front

What is the difference between plant and animal cells?

Back

Plant cells have a cell wall and chloroplasts, while animal cells do not; both have a plasma membrane and organelles.