Cell Organelles
Where are we Looking? Surface Cytoplasm Nucleus
Surface Cell Wall Cell Membrane
Cell Wall Found mostly in plant cells Provides support and protection for the cell Extracellular structure that surrounds the cell membrane Allows substances (water, oxygen, carbon dioxide, etc.) to pass into and out of cell. Made from carbohydrates and proteins made by cell.
Cell Wall
Cell Membrane - AKA plasma membrane - Outer membrane of the cell - Allows substances into and out of the cell - Contains proteins (allows for passage of materials) - Proteins are surrounded by a phospholipid bi-layer (lipid bilayer)
Cell Membrane
Cytosplasm Centrioles Chloroplasts Cytoskeleton Endoplasmic Reticulum Golgi Lysosome Mitochondria Ribosomes Vacuoles
Centrioles Cylindrical organelles that are near the nucleus in pairs - Involved in cellular division
Chloroplasts Found in plant cells -Contain green chlorophyll -Where photosynthesis takes place
Cytoskeleton Supports cell and provides shape Aids in movement of materials into and out of cell.
Endoplasmic Reticulum Tubular network fused to nuclear membrane Is located from membrane, throughout the cytoplasm. Serves as cell’s transport system 2 types: smooth ER and rough ER Smooth- lacks ribosomes Rough – contains ribosomes
Endoplasmic Reticulum
Golgi Protein “packaging plant” Found near nucleus Composed of layers forming a sac
Lysosome Transports undigested material to cell membrane for removal If lysosome breaks down, cell explodes
Mitochondria Powerhouse of cell Generate ATP Double layered folded membrane Controls level of water in cell Forms urea
Ribosomes Protein Factories Embedded in Rough ER
Vacuoles Membrane bound sacs for digestion, storage, and waste removal Contains water solution Contractile vacuoles for water removal
Nucleus Nuclear Envelope Nucleolus Chromosomes
Nuclear Envelope Surrounds nucleus Contains 2 layers Contains pores to allow materials into and out of nucleus
Nucleolus Contains RNA for protein synthesis
Chromosomes Usually in the form of chromatin Contains genetic information Composed of DNA Set number for each species