Bio Ch 3 Vocab Flashcards
(30 cards)
organelles
eukaryotic cells actually contain tiny, specialized structures
cell theory
- all organisms are made up of living units called cells
- all cells come from cells
- basic unit of life
cytoplasm
semifluid medium inside cell
prokaryotic cells
lack a membrane-bounded nucleus
cell wall
located outside plasma membrane. Protects bacteria
capsule
gelatinous sheath
flagalla
long, thin appendages composed of subunits of protein flagellum
fimbrae
short appendages that help attach appropriate surface
nucleoid
single chromosome located within a region of the cytoplasm
plasmids
small accessory rings of DNA
thylakoids
flattened disks
eukaryotic cells
structurally complex. Presence of nucleus
secondary cell wall
forms inside primary wall. Makes stronger
organelle
any well-defined subcellular structure
nucleus
prominent structure in eukaryotic cell
chromatin
consists of DNA and associate proteins
chromosomes
when chromatin undergoes coiling
nucleoplasm
a semifluid that chromatin is immersed in
nuclear envelope
double membrane that separates the cytoplasm from nucleus
nuclear pores
what nuclear envelope has to permit proteins to pass into the nucleus and ribosomal subunits to pass out
ribosomes
composed of two subunits called “large” and “small”
endomembrane system
consists of nuclear envelope, the endopasmic reticulum, the Golgi apparatus, and several vesicles
Golgi apparatus
3-20 curved sacules
secretion
discharge content
