Microtubule section 2

Question 1

When do centrioles divide?

Answer 1

During S phase. has to be before mitosis

Question 2

How does duplication of centrioles occur?

Answer 2

During S phase mother and daughter separate, then both become mother’s then they replicate themselves, and then during m phase they will divide and be housed in their own pericentrioler space

Question 3

Primary cilium

Answer 3

Many cells have at least 1
shorter, non motile
sensory function. Alternate between being basal bodies and centrosomes

Question 4

SAS-6 dimers naturally associate to form a ring (in sets of 9)

Answer 4

This could be a template for formation of the centriole.

Question 5

Nucleation

Answer 5

build up of a crystal/a protein structure

Question 6

Axoneme

Answer 6

Is the central strand of a flagella has a 9x2+2

Question 7

What two types of forms of attachment are seen with motor proteins and microtubules.

Answer 7

They will either anchor to a vesicle and move it along a microtubule or they will anchor themselves to a large organelle and move the microtubule

Question 8

What does the following do
Motor head
motor tail
kinesins
Dyneins

Answer 8

Motor head: binds to the microbule “walks”
motor tail: binds to a membrane structure like a vesicle
kinesins: Walk towards the positive ends
Dyneins: walk towards the negative ends

Question 9

axonemes have which motor protein within them. How is it modified?

Answer 9

Dyneins: they have three heads instead of just two

Question 10

Ciliary dyneins are also known as?

Answer 10

axonemal dyneins

Question 11

What does every cilium have at the base of it?

Answer 11

A basal body/centriole.