Cytoskeleton Flashcards

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1
Q

What is the cytoskeleton?

A

a network of fibres in the cytoplasm of a eukaryotic cell

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2
Q

What are the three components of the cytoskeleton?

A
  • Microfilaments
  • Microtubles
  • Intermediate fibres
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3
Q

What are microfilaments made from?

A

Actin

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4
Q

What type of molecule is actin?

A

Protein

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5
Q

What are the functions of microfilaments?

A
  • maintain cell shape
  • move cells via contraction
  • cell contraction in cytokinesis
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6
Q

What are microtubles made from?

A

Tubulin

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7
Q

What sort of molecule is tubulin?

A

Globular protein

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8
Q

What are the functions of microtubles?

A
  • determines shape of cell
  • maintains cell shape
  • acts as track for movement of organelles around the cell
  • move cells via flagella/cilia
  • form spindle fibres which move chromosomes during cell division
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9
Q

What are the functions of intermediate fibres?

A
  • gives mechanical strength to cells

- helps maintain cell integrity

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