Download title / do now - Fall River Public Schools

3/3/15
Materials Needed: Binder, Pencil
LS-9
Homework: #70
DO NOW:
We know from learning about
Kingdoms that some organisms use
asexual reproduction. But what is
it?
Agenda:
1. Do Now (5)
2. Experiment (10)
1. Send your
3. Dismiss (3)
materials
manager up with
the homework.
2. Write down the
Objectives
homework
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Today’s Agenda
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Objectives
Mitosis and Meiosis
Chromebook Simulation
Project work
Homework: #70
BYL
Objectives
Scientists will be able to synthesize
information to create a presentation and
evaluate each other’s work.
Writing and Speaking: Students will put together group
presentations using a variety of resources and
materials.
What are we doing?
We are learning about how cells and organisms
reproduce.
Why are we doing it?
In order to understand diversity, we must first
master reproduction.
How do I know you’ve got it?
When you understand the benefits and problems
with sexual and asexual production, you’ve got
it.
Asexual Reproduction: Mitosis
• Cell division and reproduction can occur in two
ways - mitosis and meiosis.
• Mitosis is a process of cell duplication, or
reproduction, during which one cell gives rise to
two genetically identical daughter cells.
• Mitosis is used by single celled organisms to
reproduce; it is also used for the organic growth of
body cells, tissues, and fibers.
• Mitosis creates cells identical the original cell.
Sexual Reproduction: Meiosis
• Meiosis is a division of a cell involving two divisions
of the chromosomes and giving rise to four
gametes, or sex cells, each possessing half the
number of chromosomes of the original cell.
Meiosis is useful for sexual reproduction of
organisms. The male and female sex cells, e.g. the
sperm and egg, fuse to create a new, singular
biological organism (Zygote).
• Meiosis creates cells with different combinations of
DNA from the original cell. This leads to genetic
variability.
Vocabulary: Don’t get confused!
• Gamete: sex cell, one for female, one for male
• Zygote: the cell that results from fertilization
of two gametes (sex cells) that has 2 copies of
chromosomes (one from each sex cell).
• Fertilization: Male gamete and Female
gamete fuse to create a zygote
Mitosis and Meiosis!
• First, read the text with your group. Then, use
the chromebooks to log in to your discovery ed
accounts and view the assignment called “You
say mitosis, and I say meiosis” and do the
simulation. Answer the questions that go along
with it. Then, move on to the next activity.
• How to get the A+: The expectations are on your
worksheet. Volume level 1!
Cell Division Project Presentations
• For a grade of A+, you must include:
– Correct information about mitosis and meiosis
– Creative presentation of information
– All group members must participate. Any group
members not participating will lower your score.
– Present your posters to the class using scientific
vocabulary
– The rubric is on the last page of your work.
HW: #70
Directions: Answer the multiple choice question
below and then explain why you chose it and what
evidence you used to get to that answer. You also
need to provide your reasoning. You must use
complete sentences. Use transition words to start
out your reasoning (As a result, in conclusion,
therefore).
**You must also annotate the question: underline
what is important, circle what you do not know,
and re-write the question into your own words:
Let’s prove what we’ve learned!
BYL
• What is the primary advantage of sexual
reproduction when compared to asexual
reproduction?
Explain your answer with a complete sentence!!
Stack, pack, and leave no tracks.
Scientist of the Day