cell structures part 1

These flashcards cover key vocabulary terms and definitions related to cell structure and function across different domains of life.

Archaea

A domain of single-celled microorganisms that are distinct from bacteria and eukarya, often found in extreme environments.

Prokaryote

An organism whose cells lack a nucleus; includes Archaea and Bacteria.

Eukaryote

An organism whose cells contain a nucleus and organelles, including animals, plants, fungi, and protists.

Cell membrane

A lipid bilayer that regulates what enters and leaves the cell.

Ribosome

A molecular machine consisting of RNA and proteins that is the site of protein synthesis.

Chromosome

A DNA molecule, either circular or linear, associated with proteins that bind to the DNA.

Cytoskeleton

A network of rod-like proteins in cells that provide structural support and facilitate movement.

Flagellum

A long, whip-like structure that propels the cell through water.

Cell wall

A rigid structure outside the cell membrane, composed of carbohydrates and other molecules.

Organelle

A membrane-bound compartment inside a cell that carries out specific functions.