Cell Organelle Function

Rough Endoplasmic Reticulum

Contains ribosomes and aids in protein production.

Smooth Endoplasmic Reticulum

Sequesters calcium and aids in muscle contraction.

Ribosomes

Sites of protein production; synthesized by the nucleolus.

Plasma Membrane

Surrounds the cell and facilitates ion transport.

Nucleus

Contains DNA; serves as site of transcription and replication.

Centrioles

Organize spindles during cell division; lack a membrane.

Golgi Apparatus

Modifies, repackages, and distributes proteins from vesicles.

Mitochondria

Site of aerobic respiration supplying cellular energy as ATP.

Lysosomes

Membrane-bound vesicles containing enzymes for intracellular digestion.

Peroxisomes

Vesicles that break down long-chain fatty acids.

Cytoskeleton

Supports the cell, maintains shape, and aids motility.

Flagellum

Structure that assists with cellular motion.