Intracellular Compartments Functions
What is the function of the lysosome
intracellulary degradation
What does SRP mean?
signal-recognition particle (SRP)
Define Exocytosis
transport out of the cell
What is the cytoskeleton?
The cytoskeleton is an intricate network of protein filaments that provides structural support
Rank the components from thinnest to thickest
Actin, Intermediate, and Microtubules
AIM
What is the function of thd Golgi Apparatus
modification, sorting, and packaging of proteins and lipids for either secretion or delivery to another organelle
A small GTP-binding protein called WHAT assembles as a ring around the neck pinching off the vesicle from the membrane
dyamin
Give two examples (terms) of endocytosis
you know them
Phagocytosis (cell eating)
pinocytosis (cell drinking)
What are the three types of cytoskeleton?
Active, Intermediate, Microtubulus
The ___________ consists of a pair of centrioles, surrounded by
a matrix of proteins
centrosomes
DOUBLE POINTS:
What membrane-bound organelles are believed to have originated by invagination of the plasma membrane
ER, Golgi, endosomes and lysosomes
Coat proteins called WHAT, secure the clathrin coat to the vesicle
membrane and help select cargo molecules for transport
adaptins
Proteins moving from the cytosol into
the nucleus are transported through
the nuclear pores using a nuclear
transport receptors
Transport through nuclear pores
These protein filaments are like ropes made of long, twisted strands of
protein that provides its tensile strength
Intermediate filaments
move toward the plus end of a microtubule (away from the
centrosome)
Kinesins
Name 5 Membrane enclosed organelles (not listed on this list)
Cytosol
Nucleus
ER
Golgi Apparatus Lysososmes
Endosomes
Mitochondria
Chloroplasts
Perioxisomes
The fate of any protein molecule
depends on its ___________, which can contain a
sorting signal
amino acid
sequence
Proteins moving from the cytosol into
the ER, mitochondria, or chloroplasts
are transported by protein
translocators located in the
membrane
Transport across membranes
These filaments are long and relatively stiff hollow tubes of protein that
can rapidly disassemble in one location and reassemble in another
Microtubules
move toward the minus end (toward the centrosome)
dyneins
These organelles contain their own genomes and make some of
their own proteins but are
encoded by genes in the nucleus and are imported from the cytosol
Mitochondrial and chloroplast
these sequences Direct Proteins to the Correct Compartment
Signal sequences
Proteins moving from one compartment of the endomembrane system to another
are transported by transport
vesicles
Transport by vesicle
Defects in a nuclear lamin can
cause a rare class of premature
aging disorders called
progeria
Actin and ______________ interact to
create coherent movement
myosin