click below
click below
Normal Size Small Size show me how
GenBio cells ch 2
cell structure and function for beginners
Term | Definition |
---|---|
Cell membrane | protective phospholipid bilayer- controls what enters and exits the cell |
semipermeable membrane | a membrane that only allows some things to enter or exit. |
cytoplasm | the liquid interior of the cell |
organelles | the parts that make up the cell |
cell wall | tough outer protective layer in plants and some bacteria but NOT in animals |
nucleus | the control center of the cell. DNA is housed here |
chloroplasts | take sunlight and transform it into food. these are found in plant cells |
mitochondria | the powerhouse of the cell. These break down food to make energy for plants and animals by cellular respiration |
ribosomes | synthesize proteins |
proteins | do the work for the cell |
rough endoplasmic reticulum | synthesizes lipids and proteins and sends them to the golgi |
golgi | modifies lipids and proteins and ships them out of the cell |
lysosome | clean up the cell- gets rid of old or dead organelles |
tissue | many cells working together |
cell | the smallest unit of life |
organ | many tissues working together |
organ system | many organs working together |
organism | an individual living thing |
prokaryote | cells without a nucleus and without membrane bound organelles |
eukaryote | cells with a nucleus that contain membrane bound organelles |
examples of prokaryotes | bacteria |
examples of eukaryotes | plants, animals, fungus and protists |