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Ch 3 Vocabularyy
cell organelles
Term | Definition |
---|---|
cell | the smallest unit that can perform functions necessary for life |
cell membrane | a layer that protects and covers the cell |
nucleus | an organelle that contains the cell's DNA |
organelles | small bodies in the cell cytoplasm that performs a specific function |
prokaryote | one celled organism that does not have a nucleus. 2 types: bacteria and archaea |
eukaryotes | multicellular organisms with a nucleus. they are the largest of the two types |
cell wall | stiff structure that supports the cell and surrounds the cell membrane |
ribosomes | organelles that make protein |
endoplasmic reticulum | a system of membranes where chemical reactions take place. it is the cell's delivery system |
mitochondrion | organelle that breaks down sugar to make energy |
vesicle | a small sac that surrounds material to be moved |
Golgi complex | the organelle that packages and distributes protein. "the post office" of the cell |
lysosomes | organelles that contain digestive enzymes |
vacuole | a vesicle |
organism | anything that can perform life processes by itself |
tissue | a group of cells that work together to perform a specific job |
organ | 2 or more tissues working together to do a certain job |
organ system | a group of organs working together to do a job |
function | the job an organism does |
structure | the arrangement of parts in an organism |