Unit 2: Ch 6 Part 2 Flashcards
(20 cards)
What is the subunit of microfilaments?
actin
What is the motor protein of microfilaments?
mysosin
What are the 3 microfilament functions?
Structure
Motility
Cell division
Microfilament Function
What is the function of microvilli?
To increase surface area.
Microfilament Function: Motility
What is the role of pseudopodia in amoeba and neutrophil movement?
Actin / Mysoin constricts one end to extend pseuopodium
Microfilament Function: Motility
Actin interacts with ___ for muscle contraction
Myosin
Microfilament Function: Cell Division
When does the cleavage furrow form?
Cytokinesis
Microfilament Function: Cell Division
How does the contractile ring form?
Interaction between Actin/Myosin
What is the Microtubule subunit?
Tubulin
What are the microtubule motor proteins?
Kinesin and Dynein
Microtubule Function: Structure
What is the purpose of a centrosome?
Microtubules originate at centrosomes and radiate out
Microtubule Function: Motility
How do microtubules aid Kinesin and Dynein?
A track for the motor protein
Microtubule Function: Motility
Cilia and flagella interact with which motor protein?
Dynein
Microtubule Function: Motility
Many per cell
Moves across the surface: falopian tube / respiratory tract
Cilia
Microtubule Function: Motility
Usually one per cell
Flagella
Microtubule Function: Cell division
How do microtubules aid cell division?
Pull apart chromosomes
What is the intermediate filament subunit?
Keratin
Do intermediate filaments have motor proteins?
No
Intermediate Filament Function?
Maintain shape and position of organelles
