Microtubule section 2 Flashcards Preview

Cell biology > Microtubule section 2 > Flashcards

Flashcards in Microtubule section 2 Deck (11):
1

When do centrioles divide?

During S phase. has to be before mitosis

2

How does duplication of centrioles occur?

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

3

Primary cilium

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

4

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

This could be a template for formation of the centriole.

5

Nucleation

build up of a crystal/a protein structure

6

Axoneme

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

7

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

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

8

What does the following do
Motor head
motor tail
kinesins
Dyneins

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

9

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

Dyneins: they have three heads instead of just two

10

Ciliary dyneins are also known as?

axonemal dyneins

11

What does every cilium have at the base of it?

A basal body/centriole.