Chapter 6: A Tour of the Cell Flashcards
Eukaryote domains
Animals, fungi, plants, and protists
Prokaryote domains
Bacteria, archaea
Chromatin
The complex of DNA and protein housed in the nucleus
Nucleolus
Region of the nucleus where rRNA complexes with proteins
Ribosomes
Protein factories
Golgi apparatus
Operates like a postal system – shipping proteins
Lysosomes
Membrane-bound sacs of hydrolytic enzymes; digestive organelle
Vacuoles
Membrane-bound vesicles; hold food/water
Central vacuoles
Concentrate and contain compounds not found in the cytosol
Chloroplasts
Site of photosynthesis
Peroxisomes
Single-membrane-bound compartments in the cell responsible for various metabolic functions that involve the transfer of hydrogen from compounds to oxygen, producing hydrogen peroxide
Cytoskeleton
A network of protein fibers that runs throughout the cytoplasm, responsible for support
Microtubules
Cytoskeleton fibers
Microfilaments
Cytoskeleton fibers, but much smaller than microtubules
Intermediate filaments
In between microtubules and microfilaments
Centrosomes
Region located near nucleus where microtubules grow
Centrioles
Located within the centrosomes of animal cells where they replicate before cell division
Flagella
Long and few in number
Cilia
Much shorter and more numerous than flagella
Desmosomes
Fasten adjacent animal cells together
Plasmodesmata
Channels that perforate adjacent plant cell walls and allow the passage of some molecules from cell to cell