The cytoskeleton

Question 1

what are the characteristics of the cytoskeleton

Answer 1

it is a dense network of protein fibers that gives cell strength shape and mobility

Question 2

what won the 3 protein filaments that makes the cytoskuton

Answer 2

1. Microtubules
2. Intermediate filaments
3. Microfilaments

Question 3

What are microfilaments made up of?

Answer 3

alpha beta tubulin -> dimers -> protofilaments-> 13 protofilaments -> tubulin

Question 4

What are microfilaments made up of?

Answer 4

alpha beta tubulin -> dimers -> protofilaments-> 13 protofilaments -> tubulin

Question 5

what are the 2 microtubules associated proteins ( MAPs)

Answer 5

structural MAPs-crosslink microtubule to other cytoskeletal polymer
motor maps-use ATP for movement

Question 6

The 2 motor proteins and their uses

Answer 6

kinesin- moves organelles on plus end
dynein - moves organelles in minus end using retrograde transport

Question 7

what is dynactin

Answer 7

it is a protein complex used by retrograde transport
acts as adaptor for linking dynein and microtubules

Question 8

explain what the centriole is

Answer 8

also known as 9x3 structure
2 structure containing centrosome