The “brain” of the cell Large, spherical Contains DNA Enclosed in a double- layered nuclear membrane

Ribosome production Consists RNA & Protein Consists of loose fibers composed of DNA & protein called chromosome Contains information for protein synthesis

Double lipid bilayer Protects the nucleus Contains nuclear pores Passing way between nucleus & cytoplasm Allows ribosome to exit nucleus

Ribosome are found in cytoplasm & ER membrane Composed of RNA & protein Help in the production of protein

Made up of a folded membrane Provides a tubular transport system inside the cell

Rough ER: Has ribosome on surface Protein synthesis & transportation Smooth ER: Does not have ribosome on surface Lipid synthesis

Energy source of the cell Contain cristae needed for aerobic respiration The more folds, the more reactions

Composed of flattened sacs Refines, packages, and delivers the cell products

Contains powerful enzymes to break up old cell components and bacteria “garbage disposals” of the cell

Contains enzymes that function in the synthesis of bile acids, breakdown of lipids, degradation of rare biochemicals, and detoxification, and detoxification of alcohol.

Made up of 2 hollow cylinders called centrioles Chromosome distribution

Motile extensions from the cell Cilia is shorter than flagella Flagella helps sperm cells move

“jelly stuff” inside the cell membrane

Selectively permeability Signal transduction Protects the cell and its organelles within

Plasma membrane Nucleus and nucleolus Mitochondria Ribosomes Endoplasmic reticulum Golgi apparatus Peroxisomes (the crystal in the electron micrograph is enclosed within a peroxisome)Peroxisomes Microtubules Plant cells differ from animal cells in lacking: centrioles intermediate filaments