2.4 Eukaryotic Cell Structure

Nucleolus

Produces ribosomes

Nuclear Envelope

Double Membrane to protect the nucleus from damage

Nuclear Pores

Allows molecules to move in and out of the Nucleus. (DNA leaves as RNA)

Chromatin

DNA loosely wrapped around a histone

Chromatin

DNA loosely wrapped around a histone protein

Chromatid

One of the two identical halves of a chromosome

Chromosome

DNA tightly wrapped around a histone protein

Mitochondria

Site of cellular respiration- produces ATP

Mitochondrial envelope

Double membrane

Cristae

Inner membrane folds to create cristae

mtDNA

Mitochondria contain circular DNA in small amounts

Matrix

Mitochondria’s cytoplasm

Golgi Apparatus

Contains cisternae and NO RIBOSOMES

Modifies proteins and sends them out of the cell through exocytosis. Used in Protein synthesis.

SER

Smooth endoplasmic reticulum, No ribosomes attached

RER

Rough, Ribosomes attached, used in Protein synthesis.

Cytoskeleton