A cell is the smallest unit that is capable of performing life functions.

Cell Theory All living things are made up of cells. Cells are the smallest working units of all living things. All cells come from preexisting cells through cell division.

“TYPICAL” ANIMAL CELL

“TYPICAL” PLANT CELL

Organelles

CELL MEMBRANE Outer layer that controls movement of materials into and out of cell

CELL WALL Most commonly found in plant cells and bacteria PLANT CELL Provide Protection and Support BACTERIA CELL

Nucleus Directs cell activities Contains genetic material – chromosomes, DNA

Cytoplasm Gel-like mixture makes up inside of cell Holds other organelles in cell Surrounded by cell membrane

Mitochondria Functions in energy production through chemical reactions

VACUOLES Membrane-bound sacs for storage, digestion, and waste removal Contains water solution Help plants maintain shape

CHLOROPLAST Usually found in plant cells Contains green chlorophyll Where photosynthesis takes place

Chloroplast Found in Autotrophs Autotrophic organisms make their own food

He’s Green. Is he an Autotroph?

HETEROTROPHS Organisms that do not make their own food Rely on other organisms

Examples of Cells Amoeba Proteus Plant Stem Red Blood Cell Nerve Cell Bacteria

Prokaryotic Eukaryotic

Prokaryotic Do not have structures surrounded by membranes Few internal structures One-celled, simple organisms, Bacteria

Eukaryotic Contain organelles surrounded by membranes Most living organisms (you!) PlantAnimal

AUGUST 30, 2013 In you journal under the journal guidelines, write today’s date & Cell Review Draw & label only the type of Cell