2.1 Cytoskeleton Flashcards Preview

A Level Biology > 2.1 Cytoskeleton > Flashcards

Flashcards in 2.1 Cytoskeleton Deck (18)
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1
Q

What are protein threads arranged as?

A
  • microfilments

* microtubules

2
Q

What are microfilments?

A

Small solid strands

3
Q

What are microtubules?

A

Tiny protein cylinders

4
Q

What are the functions of the cytoskeleton?

A
  • support the cells organelles
  • strengthens the cell and maintains its shape
  • responsible for movement of materials inside the cell
  • movement if the cell
5
Q

Give an example of the movement inside the cell?

A

Movement of chromosomes when they separate during cell division

6
Q

What is the cytoplasm made up of?

A

A network of protein threads called the cytoskeleton

7
Q

Where are actin filaments found?

A

In muscle cells

8
Q

What do actin filaments help to do?

A
  • Move organelles in the cell

- cause movement in white blood cells

9
Q

How big are microtubules?

A

25nm in diameter

10
Q

What are microtubules made of?

A

A protein called tubulin

11
Q

What do microtubules do?

A
  • move microorganisms through liquid
  • move liquid
  • move organelles in cells
12
Q

What do microtubules use to drive movement?

A

ATP

13
Q

What is the cytoskeleton made up of?

A

Microfilments
Intermediate filaments
Microtubules

14
Q

What is the cytoskeleton?

A

A complex network of fibres that resist tension to support and maintain the cells shape

15
Q

What is the same about the elements that make up the cytoskeleton?

A

They are all dynamic

16
Q

Why do the elements that make up the cytoskeleton move?

A

To move material inside the cell
To alter the shape of the cell
To move the cell itself

17
Q

What do microfilaments do?

A

Maintaining cell shape
Muscle contraction
Cytokinesis of cell division

18
Q

What do intermediate filaments do?

A

Maintain cell shape

Anchor the nucleus and organelles

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