Download Name Mitosis -- Internet Lesson - revised 2014 In this internet lesson

Name ____________________________
Mitosis -- Internet Lesson - revised 2014
In this internet lesson, you will review the steps of mitosis and meiosis and view video
simulations of cell division. You will also view an onion root tip and calculate the percentage of
cells at each of the stages of cell division.
A Mitosis Animation & Tutorial
http://www.sumanasinc.com/webcontent/animations/content/mitosis.html (only a few minutes)
How Cells Divide: Mitosis vs. Meiosis – view printable version, slides 1-10 only
Onion Root Tip - Online Activity
First, another Tutorial:
http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/main.html
Try the Quiz:
1. The stage of the cell cycle where each chromosome is composed of two chromatids in preparation for
mitosis.
A.
G1
B.
S
C.
M
D.
G2
2. The class of enzymes that are involved in triggering events in the cell cycle are called:
A.
proteases
B.
transferases
C.
kinases
D.
nucleases
3. Which sequence of the cell cycle is common to eukaryotes?
A.
G1 to G2 to S to M to cytokinesis
B.
G1 to M to G2 to S to cytokinesis
C.
G1 to S to M to G2 to cytokinesis
D.
G1 to S to G2 to M to cytokinesis
4. The stage of the cell cycle where the cell is preparing to begin DNA replication is called:
A.
G1
B.
G2
C.
S
D.
M
5. The proteins which complex with DNA producing the "beads on a string" or nucleosomes are called:
A.
kinases
B.
proteases
C.
spindle fibers
D.
histones
6. Which of the following features of cell division are very different for animal and plant cells?
A.
prophase
B.
metaphase
C.
anaphase
D.
cytokinesis
7. Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are
connected by a centromere and are called:
A.
sister chromosomes
B.
homologous chromosomes
C.
sex chromosomes
D.
sister chromatids
8. The first stage of mitosis when chromosomes start becoming visible in the microscope is called:
A.
anaphase
B.
prophase
C.
telophase
D.
metaphase
9. The sputum (fluid coughed up from the lungs) of many smokers contain cells with mutations (errors) in
the genes for p53. The smoking induced mutations appear to be an early signal showing that cancer of the
lungs will follow. What is the likely relationship between early p53 mutation and the development of lung
cancer?
A.
p53 with a mutation directly stimulates the growth of cancer cells.
B.
Mutations in p53 would prevent abnormal cells from dying by apoptosis.
C.
Mutant p53 triggers the M phase of the cell cycle leading to abnormal cell division.
D.
p53 causes a cell to enter G0, blocking cell division.
1
10. Which of the following statements is NOT true of mitosis?
A.
A single nucleus gives rise to two identical daughter nuclei.
B.
The daughter nuclei are genetically identical to the parent nucleus.
C.
The centromeres divide at the onset of anaphase.
D.
Homologous chromosomes synapse in prophase.
11. Cytokinesis in a plant cell is characterized by:
A.
B.
C.
D.
the equal division of homologous chromosomes.
a pinching off of the cell membrane to divide the cell.
the formation of a cell plate in the cytoplasm.
the movement of the chromosomes from the metaphase plate.
Mitosis in Whitefish & Onion Roots
http://www.biologycorner.com/projects/mitosis.html
Then, for each organism, identify the stage of mitosis.
View 1
View 2
View 3
View 4
Whitefish
View 5
-----------------
Onion
Onion Root Tip - Online Activity – part 2
Then, the activity:
http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html
Read the introduction, then click the “next” button.
You will have 36 cells to classify. When you’re finished, record your data in the chart below.
Interphase
Prophase
Metaphase
Anaphase
Telophase
Total
Number of cells
36
Percent of cells
100 %
(calculate:
number of cells
divided by total
cells x 100 )
2