Mitosis Vocab

Question 1

Chromosome

Answer 1

A condensed package of DNA and proteins
- found in the nucleas
- the x shape thing

Question 2

Chromatid

Answer 2

Half of one replicated chromosome
- when a chromosome is copied during S phase, you get two sister chromatids

Question 3

Chromatin

Answer 3

Uncondensed “stringy” form of DNA
- organized by histone proteins

Question 4

Centromere

Answer 4

The region where two sister chromatids are attached.
After S phase of the cell cycle, each new sister chromatid is attached at the centromere

Question 5

Kinetochore

Answer 5

A protein complex located in the centromere region (those circular proteins where the x meets)
- the site where spindle fibers attach during mitosis

Question 6

Centrosome

Answer 6

Organelle in the cell responsible for orchestrating mitosis
Contains two centrioles
The mitotic spindle forms between the two centrosomes
Gets copied during interphase ( so that there are two centrosomes)

Question 7

Centriole

Answer 7

A bundle of microtubules which are involved in organizing the spindle fibers during mitosis
Each centrosome contains a pair of centrioles
Centrioles move the opposite poles of the cell during mitosis

Question 8

Cytokinesis

Answer 8

Division of a cell’s cytoplasm
After mitosis, cytokinesis must occur in order for the entire cell to be split in two.
Occurs differently in plants and animals.

Question 9

Mitotic Spindle/Spindle Fiber

Answer 9

– Protein fibers that move chromosomes.