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Today is Friday (!), November 15 th , 2013. Pre-Class: Today is our review. Have any questions? Reminder: Chromosomes, Mitosis, Meiosis Questions was due today, Mitosis Flipbook is due next class. Today’s Agenda. The Freeform “Lab” Review Review Review. Warm-Up.

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today is friday november 15 th 2013

Today is Friday (!),November 15th, 2013

Pre-Class:

Today is our review. Have any questions?

Reminder:Chromosomes, Mitosis, Meiosis Questions was due today, Mitosis Flipbook is due next class.

today s agenda
Today’s Agenda
  • The Freeform “Lab”
  • Review
  • Review
  • Review
warm up
Warm-Up
  • Let’s take a look at some actual cells undergoing mitosis.
  • As you know, under the microscope things aren’t so “ideal.”
  • Here’s what you might see:
    • Note: This is an onion root tip, so it’s a plant cell.
    • Look near the tip for more mitosis.

http://online.santarosa.edu/homepage/cgalt/BIO10-Stuff/Ch08-A-Mitosis/Onion_Root_Tip_Mitosis_Stages-02.jpg

mitosis or meiosis
Mitosis or Meiosis
  • Using your partners and your whiteboards, tell me (quickly) whether each of the following statements describes mitosis or meiosis.
  • Standard trivia questions to follow.
mitosis or meiosis question 1
Mitosis or Meiosis:Question #1
  • Four new cells are formed from each original.
    • Meiosis (spermatogenesis/oogenesis).
mitosis or meiosis question 2
Mitosis or Meiosis:Question #2
  • This type of cell reproduction helps you grow (or repair/replace old cells).
    • Mitosis.
mitosis or meiosis question 3
Mitosis or Meiosis:Question #3
  • This makes cells with half the original cell chromosome number.
  • 1 imaginary bonus point if you’re really specific.
    • Meiosis I.
mitosis or meiosis question 4
Mitosis or Meiosis:Question #4
  • New egg cells are made this way.
  • 1 imaginary bonus point if you’re really specific.
    • Oogenesis.
mitosis or meiosis question 5
Mitosis or Meiosis:Question #5
  • New sperm cells are made this way.
  • 1 imaginary bonus point if you’re really specific.
    • Spermatogenesis.
mitosis or meiosis question 6
Mitosis or Meiosis:Question #6
  • This makes cells with the same chromosome number as the original.
  • 1 imaginary bonus point if you give two correct answers.
    • Mitosis or Meiosis II.
question 7
Question #7
  • A human haploid cell has this many chromosomes.
    • 23.
question 8
Question #8
  • A specificexample of (not a term for) a human haploid cell is this.
    • Sperm or Ovum.
question 9
Question #9
  • A human diploid cell has this many chromosomes.
    • 46.
question 10
Question #10
  • We call human sex cells (sperm/egg) by this general term.
    • Gametes.
question 11
Question #11
  • BONUS NON-BIOLOGY QUESTION
  • You may wager any/all of your points.
  • Category: Presidents
  • Who is the only United States president to have survived two assassination attempts (both, coincidentally, by women)?
    • Gerald Ford.
question 12
Question #12
  • Why is crossing over a good thing?
    • Increases genetic variability.
question 13
Question #13
  • What do cells that have cell walls develop in place of a cleavage furrow in order to undergo cytokinesis?
    • Cell plate (then they build the cell wall along it).
question 14
Question #14
  • What are the two sets of possible resulting cells from the process of meiosis? (as in, how many of what type of cell are made by each kind of meiosis – NOT phase of meiosis)
    • Four sperm cells OR one egg cell and three polar bodies.
question 15
Question #15
  • What’s the difference between daughter cells and sister chromatids?
    • Daughter cells are actual cells – the two cells that were produced during mitosis.
    • Sister chromatids are the two identical halves of an X-shaped chromosome. They contain the same DNA and are located in the nucleus.
question 16
Question #16
  • BONUS NON-BIOLOGY QUESTION
  • You may wager any/all of your points.
  • Category: Candy
  • Which candy company owns the trademark to the Kit-Kat Bar? (note: other companies still make Kit-Kat and have a license to produce it, but only one company truly owns it)
    • Nestlé.