12 Questions
1-Primary cilia are made of:
Tubulin
The diameter of intermediate filaments is
10
Dynamic instability (choose one correct answer):
Is the co-existence of growing and shrinking microtubules in the same conditions
What changes does Cdc42 promote in the cell?
Filopodia
5- Primary cilia are:
microtubule based sensory organelles that detect mechanical and chemical stimuli
What is true about Lamins:
Contain a nuclear localization signal (NLS) to be imported into the nucleus b. They are components of the nuclear lamina c. They are intermediate filament proteins d. They are mutated the premature aging disease Hutchinson-Gilford progeria syndrome
How does the actin cytoskeleton contribute to cell movement?
Polymerization and depolymerization of actin filaments b. Providing tracks for the binding of myosin motor proteins. c. Forms filopodia and lamellipodia d. Provides binding sites for actin related proteins (Arps) that provide actin branching e.
To study the actin cytoskeleton we can use:
Inhibitors of actin polymerization and depolymerization
I need to move an organelle along the cell, what do I need?
ATP, a motor protein and a track (polarized cytoskeleton: actin or microtubules)
Myosin:
. Is a motor protein that uses ATP to walk along actin filaments
A cell is moving towards a cAMP gradient, what is it doing
b. Chemotaxis
- Cells that attach to substrates using focal adhesions can move fast because:
. Focal adhesions are reversible and dynamic
Test your knowledge on primary cilia, lamins, intermediate filaments, and the effects of Cdc42 in the cell with this quiz. Choose the correct answers to questions related to cell biology and cell structure.
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