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vocab #3
Term | Definition |
---|---|
cytology | cytology is a branch of biology that studies the structure and function of plant and animal cells |
organelles | “small organs” having distinctive functions |
cells | basic unit of life |
cytoplasm | jelly like substance inside cells that contain molecules , in some cell, organelles |
cell (plasma) membrane | double layer that forms a boundary between a cell and the surrounding environment and controls the movement of substances into and out of the cell |
cell wall | supports and provides the plant cell |
chloroplast | food maker;only in plants |
mitochondria | produces ATP energy |
nucleus | controls activities of cell |
nucleolus | where ribosomes are made |
ribosomes | where protein is made |
endoplasmic reticulum | transport material throughout the cell |
golgi bodies | make, package and secrete cell products |
vacuoles | stores materials |
lysosomes | destroys damaged or old cell part |
centrioles | functions in cell division |
virus(es) | small infectious agent that replicates only inside the living cells of other organisms. |
diffusion | movement of molecules from an area of higher concentration to an area of lower concentration |
osmosis | a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one |
active transport | movement of molecules across a membrane from a region of lower concentration |
Phagocytosis | the ingestion of bacteria or other material by phagocytes and amoeboid protozoans. |