Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Centrosome
|
Attached to outside of the nucleus.
Made up of 2 centrioles. |
|
|
Astral fibres
|
Extend from cenromere.
Does not connect with other structures. |
|
|
Pole to Pole fibres
|
Connects centrioles.
|
|
|
Kinetocore fibres
|
Connects centriole to kinetocore proteins which bind chromosomes.
|
|
|
Metaphase Plate
|
Mid point between centrosomes.
Chromosomes meet here durin metaphase. |
|
|
Dynesin
|
Breaks down microtubule between the kinetocore and (forming) metaphase plate.
This allows the chromosomes to move towards the metaphase plate. |
|
|
Kinesin
|
Creates microtubules on the side of the kinetocore closest to the centrosome.
Replaces microtubule broken down by dysein. |
|
|
Cohesin
|
Holds sister chromotids together.
|
|
|
Seperase
|
A protease that breaks down cohesin.
Keped inactive until late metaphase. |
|
|
Securin
|
A chaperone protein.
Keeps seperase inactive |
|
|
Anaphase Promoting Complex (APC)
|
Breaks down securin allowing seperase to activate.
Controlled by CDKs. |
|
|
Cytokinesis
|
Cell division.
|
|
|
Actin fillaments
|
Assemble under plasma membrane to form a ring around the metaphase plate.
|
|
|
Myosin II
|
A non-muscle myosin.
Induces contraction of actin ring by causing fillaments to slide over each other. |
|
|
MLC kinase
|
Regulates Myosin function when activated.
|
|
|
ROCK
|
Regulates MLC kinase
|
|
|
Cleavage Furrow
|
Furrow in membrane created by contraction of actin ring.
|
|
|
Cytoplasmic vesicles
|
Promotes cell fission by delivering plasma membrane.
|
