THS
Anaphase
Cell plate
Centriole
Centromere
Chromatids
Chromatin
Chromosomes
Cleavage furrow
Cytokinesis
Mitosis Worksheet
CELL CYCLE, MITOSIS
WORD BANK
Diploid
Diploid (yes, used again!)
G1
G2
Haploid
Interphase
Metaphase
Metastasis
Microtubules
Mitosis
Prophase
Replicate
‘S’ for (‘synthesis’)
Spindle Fibers
Telophase
Biology
1.
Before a cell can divide, enzymes must first _________________________ the DNA, so there is double the amount.
2.
DNA that is spread out thinly (so you can’t see it with the light microscope) is called
_________________________; DNA spends most of its time like this.
3.
When DNA is coiled up tightly and condensed into thick strands you can see with a microscope, they are called _________________________ (you have 46 of them).
4.
After they are copied, each chromosome is composed of two sister _________________________, joined at one point.
5.
The place where the two sisters “hold hands” to join is called the _________________________.
6.
A special organelle makes “ropes” that will pull the sisters apart … these “ropes” are known as
_________________________.
7.
The organelle (usually found in twos) that makes the “ropes” is the _________________________.
8.
The ropes are made up of thin protein structures called _________________________.
9.
_________________________ is the division part of the cell cycle; it means “nuclear division”.
10.
The longer part of the cell cycle, where the cell is NOT dividing, is called _________________________.
11.
The part of interphase where the cell is “chilling”, carrying on its normal functions, is
_________________________.
12.
The part of interphase where DNA is replicating is called _________________________.
13.
The part of interphase where the cell is increasing in size and preparing for mitotic division (after replicating its DNA) is called _________________________.
14.
Which phase of mitosis has the chromosomes lined up in the middle? _________________________.
15.
In which phase of mitosis are sister chromatids separated and pulled to opposite poles?
_________________________
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THS Mitosis Worksheet Biology
16.
_________________________ is the term used to describe the final separation of the cytoplasm into 2 distinct cells.
17.
_________________________ is the part of mitosis where chromosomes thicken, the nuclear envelope disintegrates, the centrioles start to migrate to opposite poles, and the spindle fibers begin to form.
18.
_________________________ is the part of mitosis where 2 new nuclear envelopes form around identical nuclei.
19.
Mitosis makes 2 identical cells with the same chromosome number. Since this number is NOT halved, it is called the _________________________ number of chromosomes.
20.
During cytokinesis in animal cells a(n) _________________________ forms (the cytoplasm “pinches in”).
21.
During cytokinesis in plant cells, a(n) _________________________ forms (it is a faint preview of where the new cell wall will be).
22.
The full, or _________________________ number of human chromosomes is 46 (23 pairs).
23.
The half, or _________________________ number of human chromosomes is 23.
24.
(NOT IN WORD BANK) What are the main purposes of mitosis?
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