Chapter 5: Eukaryotic Cells Flashcards
- nucleus is separated from the cytoplasm by this
- consists of two membranes
nuclear envelope (nuclear membrane)
embedded in the nuclear envelope regulate the transport of proteins and RNA molecules between the nucleus and cytoplasm
nuclear pore complexes
liquid within the nucleus is called….?
nucleoplasm
formed around the genes coding for rRNA molecules of ribosomes
nucleoi
divides the cell into functional and structural compartments
endomembrane system
small membrane-bound sacs that transfer substances between parts of the system
vesicles
carries out various functions through several types of embedded proteins
plasma membrane
extensive interconnected network (reticulum) of membranous channels and cisternae
endoplasmic reticulum (ER)
each cisternae is formed by a single membrane that surrounds an enclosed space
ER lumen
has many ribosomes o nits outer surface
rough ER
proteins to be secreted from the cell are transported to the membrane in _____ which release their contents to the exterior by exocytosis
secretory vesicles
- no ribosomes attached to their surfaces
- synthesizes lipids that become part of cell membranes
smooth ER
constists of a stack of flattened, membranous sacs (cisternae)
golgi complex
small, membrane-bound vesicles contining hydrolytic enzymes that digest complex molecules
lysosomes
membrane-bound organelles that have their own DNA, in which cellular respiration occurs
mitochondria
