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Cytoskeleton, Extracellular Matrix and Cell Junctions Quiz

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BSc Biomedical Science Year 1 Quiz on Cytoskeleton, Extracellular Matrix and Cell Junctions Quiz, created by rachel-chads on 28/05/2014.
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Quiz by rachel-chads, updated more than 1 year ago
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Created by rachel-chads over 10 years ago
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Resource summary

Question 1

Question
What is the monomer of microtubules?
Answer
  • Tubulin
  • Actin
  • Collagen

Question 2

Question
Tubulin is a homodimer.
Answer
  • True
  • False

Question 3

Question
The addition of tubulin monomers to a microtubule is quicker at which end?
Answer
  • The positive end
  • The negative end

Question 4

Question
Microtubules are more rigid than microfilaments.
Answer
  • True
  • False

Question 5

Question
Is the positive or negative end of the microtubule embedded inside the centromere?
Answer
  • Positive (+)
  • Negative (-)

Question 6

Question
Microfilaments are a double helix of actin
Answer
  • True
  • False

Question 7

Question
A role of intermediate filaments is to provide strength and support to cells.
Answer
  • True
  • False

Question 8

Question
Intermediate filaments are:
Answer
  • Distributed broadly around the cell
  • Distributed only in specific areas of the cell

Question 9

Question
Microtubule motors are energy dependent (i.e. they require ATP.)
Answer
  • True
  • False

Question 10

Question
Which of these microtubule motors are minus end directed?
Answer
  • Dynein
  • Kinesin

Question 11

Question
Kinesin moves things towards the cell body/nucleus.
Answer
  • True
  • False

Question 12

Question
Which 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
Answer
  • if ii) and iii) are true
  • if ii), iii) and iv) are true
  • if i), ii) and iii) are true
  • if i) and iii) are true

Question 13

Question
Is elastin a highly hydrophobic or hydrophilic protein?
Answer
  • Hydrophobic
  • Hydrophilic

Question 14

Question
The extracellular matrix helps regulate cell differentiation
Answer
  • True
  • False

Question 15

Question
Tight junctions are which type of cell junction:
Answer
  • Occluding
  • Anchoring
  • Communicating

Question 16

Question
Tight junctions allow the specialisation of membranes.
Answer
  • True
  • False

Question 17

Question
Adheren junctions link to:
Answer
  • Actin Filaments
  • Microtubules
  • Intermediate Filaments

Question 18

Question
Desmosomes attach cells to the basal lamina.
Answer
  • True
  • False

Question 19

Question
Which molecule attaches desmosomes to each other?
Answer
  • Cadherins
  • Integrins
  • Claudins
  • Connexins
  • Selectins

Question 20

Question
Which molecule attaches tight junctions to each other?
Answer
  • Claudins
  • Cadherins
  • Intergrins
  • Connexins
  • Selectins

Question 21

Question
Which molecule attaches hemidesmosomes to the basal lamina?
Answer
  • Integrins
  • Cadherins
  • Claudins
  • Connexins
  • Selectins

Question 22

Question
Focal adhesions attach cells to the extracellular matrix by the use of:
Answer
  • Integrins and actin filaments
  • Cadherins and intermediate filaments
  • Integrins and intermediate filaments
  • Cadherins and actin filaments
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