cells Flashcards
prokaryotes
a group of single-celled organisms with no nucleus and circular loop of DNA (bacteria and archaea)
eukaryotes
a group of single and multi celled organisms with a nucleus and linear strands of DNA, animals, plants and fungi
unicellular
is made of only one cell
multicellular
is an organisms composed of many cells
organelles
any of a number of organised or specialised structures within a living cell
mitochondria
highly folded inner membrane surrounded by the second outer membrane
site of aerobic cellular respiration (produces ATP)
golgi body
stacked flattened sacs that are the sites of protein sorting, packaging and modification
nucleus
is surrounded by a double membrane
protects the DNA of the cell
inside the nucleus is a smaller structure called a nucleolus (site of ribosome production)
rough endoplasmic reticulum
a membranous chain of connected and flattened sacs which are coated with ribosomes
synthesising and modifies proteins
smooth endoplasmic reticulum
a membranous chain of connected and flattened sacs that is NOT coated with ribosomes
responsible for production of lipids
chloroplast
a double membrane-bound organelle that contains flattened, fluid-filled sacs
is the site of photosynthesis
cell wall
a sturdy border outside the plasma membrane outside plasma membrane that provides strength and structure the plant
large vacuole
a membrane-bound sac that is used for water and solute storage
maintains plant cell structure
ribosomes
tiny structures made of rRNA and proteins
freely float in cytoplasm or attached to rough ER
building blocks to make proteins
lysosomes
membrane-bound vesicle containing digestive enzymes