Post on 05-Jan-2016
Topic: Reproduction
Aim: Describe the processes of asexual reproduction and mitosis.
Do Now: Take out your repro reading notes.
With your 12 o’clock partner, discuss #’s 1 – 3 from your Repro ISN and the immune system questions on the next slide
(YOU HAVE 4 MINUTES)
HW: Meiosis Reading Notes due Friday.
CL Skeletal and Muscular due tomorrow.
Immune System due Friday
Immunity Review
1.Why is active immunity long term?
2.Identify the two ways you can get active immunity to a disease.
3.Identify the immune system disorder being described:
a. It weakens the immune system so that the person can no longer fight pathogens
b. The body attacks your own body cells
c. Cells divide uncontrollably
d. The body reacts to a harmless substance.
Where is DNA found in a cell?•In the nucleus•Chromosomes:
–Made of genes DNA
gene
1. How many cells are produced as a result of mitosis?
• 2 cells
2. Identify the name of the new cells produced as a result of mitosis.
• Daughter cells
daughter cells
3. Compare the two new cells produced.
• Identical copies• Same genetic code• Same # of chromosomes
50
50 50
4. If the original cell consists of 46 chromosomes, how many will be found in the daughter cells.
• 46
46
46 46
5. Identify the 5 phases of mitosis.
• Interphase• Prophase• Metaphase• Anaphase• Telophase
6. Identify the main event that occurs during interphase.
• Duplicating chromosomes
chromatid
centromere
centromere
chromatid
1 chromatid 2 chromatids
7. Identify 3 events that occur during prophase.
• Centrioles get to right position• Spindle fibers form• Nuclear membrane breaks down
centrioles
Spindle fibers
8. Identify the main event that occurs during metaphase.
• Chromosomes line up along central axis.
• Spindle fibers attach to centromeres.
Chromosomes
Spindle fibers
Centrioles
10. Identify the main event that occurs during anaphase.
• Chromatids pulled to each end.
What are the spindle fibers attached to????
Chromosome
Spindle fibers
11. Describe the 2 events that occur during telophase.
• Nuclear membrane reforms• Cytokinesis – cell membrane
“pinches in” to split cell into 2 pieces
Cytokinesis
• Plant cells: cell plate forms
Interphase
Chromosomes replicating
Prophase
Nuclear membrane breaks down, spindle fibers form, centrioles move to opposite poles
Metaphase
Chromosomes line up in the middle
Anaphase
Chromatids pull apart and move to opposite poles.
Telophase
Nuclear membrane reforms and cytokinesis occurs.
Interphase
Chromosomes replicating
Daughter cells are genetically identical to each other and parent cell.(same # of chromosomes)
Mitosis – bone cells
Parent cell Prophase Metaphase
TelophaseAnaphase
Rat – epithelial cells
REMEMBER!REMEMBER!
IInterphase
PProphase
MMetaphase
AAnaphase
TTelophasehttp://www.youtube.com/watch?v=PQyAXiH5RrI
IPMAIPMATT
Let’s Review!
1.Describe where chromosomes are found and what they are made up of.
2.Describe 2 characteristics of asexual reproduction.
3.Describe what occurs at each phase of mitosis.
Infectious diseases are caused by
1. deficiencies in the diet
2. allergies
3. microscopic organisms that can be transmitted from one organism to another
4. malfunctioning organs
A person with AIDS is likely to develop infectious diseases because the virus that causes AIDS
1. destroys cancerous cells
2. damages the immune system
3. increases the rate of antibody production
4. increases the rate of microbe destruction
In some individuals, the immune system attacks substances that are usually harmless, resulting in
1. an allergic reaction
2. a form of cancer
3. an insulin imbalance
4. a mutation
Uncontrolled cell division is known as
1.allergies
2.cancer
3.AIDS
4.infectious
The type of immunity in which antibodies and memory cells are produced is called
1.temporary immunity
2.active immunity
3.passive immunity
4.long-term immunity
1 & 2: interphase3,4,& 5: prophase6:metaphase7 & 8: anaphase9 & 10: telophase (& cytokinesis)
http://www.youtube.com/watch?v=Y6j36p3s8ts&feature=player_embedded#at=33