Good Luck Flashcards
1
Q
keratins
A
-epithelium
- terminate in desmosomes and site of cell-cell adhesion
2
Q
vimentin
A
- mesenchyme
- attach nucleus to plasma membrane
3
Q
Desmin
A
- muscle cell
- framework for attachment of contractile proteins
4
Q
neurofilaments
A
- neurons
- internal support and maintaining gel state of cytoplasm
5
Q
microtubules
A
- role in cell shape maintenance, development, and intracellular transport
- conspicuous in dividing cells
6
Q
lysosomes
A
- intracellular digestion
- in cells with phagocytic activity (macrophages)
7
Q
Golgi
A
- completes modification of proteins, packages and directs to destination
- proteins released in vesicles from trans face
8
Q
ribosomes
A
- basophilic b/c phosphate groups
- stains with hematoxylin
- decode mRNA message for translation into protein
9
Q
peroxisomes
A
- oxidize organic materials by transferring hydrogen atoms to molecular oxygen
- results in toxic hydrogen peroxide removed by catalase
10
Q
proteasome
A
- complexes that digest proteins targeted for destruction by ubiquination
- moves excess proteins or incorrectly folded proteins
11
Q
apoptosis
A
- programmed cell death
- requires energy
12
Q
necrosis
A
- accidental cell death
- cells swell and release intracellular components
13
Q
receptor mediated endocytosis
A
- receptors bind to ligands
- creates vesicles that lose their clathrin coat to fuse w/ endosomes
14
Q
A
15
Q
endosomes
A
intracellular sorting organelles containing ATP proton pumps
16
Q
desmosomes
A
mediate cell-cell contact and strong adhesion
17
Q
glycocalix
A
- a network of polysaccharides that project from cellular surfaces of bacteria
- “sugar coat”
- stabilizes membrane, cell recognition
- adhesion
18
Q
chaperone proteins
A
- assisting protein folding under stress conditions