Test
Cytoskeleton, Extracellular Matrix and Cell Junctions Quiz
Preguntas del test (22)
1What is the monomer of microtubules?
- ATubulin
- BActin
- CCollagen
2Tubulin is a homodimer.
- AVerdadero
- BFalso
3The addition of tubulin monomers to a microtubule is quicker at which end?
- AThe positive end
- BThe negative end
4Microtubules are more rigid than microfilaments.
- AVerdadero
- BFalso
5Is the positive or negative end of the microtubule embedded inside the centromere?
- APositive (+)
- BNegative (-)
6Microfilaments are a double helix of actin
- AVerdadero
- BFalso
7A role of intermediate filaments is to provide strength and support to cells.
- AVerdadero
- BFalso
8Intermediate filaments are:
- ADistributed broadly around the cell
- BDistributed only in specific areas of the cell
9Microtubule motors are energy dependent (i.e. they require ATP.)
- AVerdadero
- BFalso
10Which of these microtubule motors are minus end directed?
- ADynein
- BKinesin
11Kinesin moves things towards the cell body/nucleus.
- AVerdadero
- BFalso
12Which of the following statements are true regarding collagen:
i) it has a triple-helical structure
ii) collagen molecules run at right angles to each other
iii) there are approximately 20-40 variants
iv) collagen is made by ribosomes which are freely moving in the cytoplasm- Aif ii) and iii) are true
- Bif ii), iii) and iv) are true
- Cif i), ii) and iii) are true
- Dif i) and iii) are true
13Is elastin a highly hydrophobic or hydrophilic protein?
- AHydrophobic
- BHydrophilic
14The extracellular matrix helps regulate cell differentiation
- AVerdadero
- BFalso
15Tight junctions are which type of cell junction:
- AOccluding
- BAnchoring
- CCommunicating
16Tight junctions allow the specialisation of membranes.
- AVerdadero
- BFalso
17Adheren junctions link to:
- AActin Filaments
- BMicrotubules
- CIntermediate Filaments
18Desmosomes attach cells to the basal lamina.
- AVerdadero
- BFalso
19Which molecule attaches desmosomes to each other?
- ACadherins
- BIntegrins
- CClaudins
- DConnexins
- ESelectins
20Which molecule attaches tight junctions to each other?
- AClaudins
- BCadherins
- CIntergrins
- DConnexins
- ESelectins
21Which molecule attaches hemidesmosomes to the basal lamina?
- AIntegrins
- BCadherins
- CClaudins
- DConnexins
- ESelectins
22Focal adhesions attach cells to the extracellular matrix by the use of:
- AIntegrins and actin filaments
- BCadherins and intermediate filaments
- CIntegrins and intermediate filaments
- DCadherins and actin filaments
Información
- Descripción
- BSc Biomedical Science Year 1 Test sobre Cytoskeleton, Extracellular Matrix and Cell Junctions Quiz, creado por rachel-chads el 28/05/2014.
- Autor
- rachel-chads
- Idioma
- English
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