Mitosis LESSON 3

Question 1

Chromatin

Answer 1

thread-lookalike made of DNA and proteins

Question 2

Chromatid

Answer 2

One half of a duplicated chromosome.

Question 3

Chromosome

Answer 3

thread-like structure

Question 4

How are chromatin, chromatid, and chromosomes related? (Like, what’s the cycle of these things being created in the mitosis cycle?)

Answer 4

1 chromatin makes 1 chromatid. Then, 2 chromatids are held together by a centromere to make one chromosome.

The cycle goes this way for the first three stages of the cell cycle (Interphase, Prophase, Metaphase.)&raquo_space;»

Then it goes backwards for the last three stages (Anaphase, Telophase/Cytokinesis, and Interphase [Again]). ««

Question 5

Order of Mitosis

Answer 5

Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

Question 6

Interphase

Answer 6

The cell spends most of its life here growing bigger and bigger. DNA duplicates/makes a copy of itself, therefore chromosomes also duplicate here.

Question 7

Prophase

Answer 7

Nucleus and nucleolus disappear. Chromosomes appear. They become shorter and thicker, creating the X shape. The centrioles start turning into spindle fibers.

Question 8

Metaphase

Answer 8

Nuclear membrane disappears. The chromosomes line up in the middle of the cell. The spindle fibers move to the end of the cell, connecting to the centromeres of the chromosomes.

Question 9

Anaphase

Answer 9

The chromosomes split into sister chromatids and move to the ends of each cell. The centromeres also divide.

Question 10

Telophase/Cytokinesis/Interphase (again):

Answer 10

Telophase/Cytokinesis: The cell begins to divide into two. Nuclear membrane forms. In plant cells, a cell plate starts to form.

Interphase (again): The cell has successfully divided into two daughter cells. Chromatids unwind back into chromatin. In plant cells, the cell plate turns into the cell wall.