Cell Biology

Cell Theory All living things are made up of a cell or cells All cells come from pre-existing cells All cells carry out all life processes (with the possible exception of reproduction) An exception to cell theory is the virus

Organelle and functions An organelle is a specialized sub unit of a cell.

nucleus the control center of the cell

nucleolus small circular structure(s) within the nucleus; may be involved in protein synthesis

chromosomes genetic material found in the nucleus

mitochondria where energy in the form of ATP is produced

ribosomes where proteins are made

endoplasmic reticulum transport system in the cell

golgi apparatus packages up protein

lysosome special type of vacuole that breaks down large molecules and cell parts

chloroplast where photosynthesis occurs

cell membrane semi-permeable; it controls what moves in and out of the cell

cell wall protects and supports plant cells

vacuole stores wastes, water, food

eukaryote cell that has a membrane-bound nucleus

prokaryote a cell with no nuclear membrane and few (if any) membrane bound organelles