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

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

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  1. 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.

  2. Today’s Agenda • The Freeform “Lab” • Review • Review • Review

  3. 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

  4. 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.

  5. Mitosis or Meiosis:Question #1 • Four new cells are formed from each original. • Meiosis (spermatogenesis/oogenesis).

  6. Mitosis or Meiosis:Question #2 • This type of cell reproduction helps you grow (or repair/replace old cells). • Mitosis.

  7. 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.

  8. Mitosis or Meiosis:Question #4 • New egg cells are made this way. • 1 imaginary bonus point if you’re really specific. • Oogenesis.

  9. Mitosis or Meiosis:Question #5 • New sperm cells are made this way. • 1 imaginary bonus point if you’re really specific. • Spermatogenesis.

  10. 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.

  11. Question #7 • A human haploid cell has this many chromosomes. • 23.

  12. Question #8 • A specificexample of (not a term for) a human haploid cell is this. • Sperm or Ovum.

  13. Question #9 • A human diploid cell has this many chromosomes. • 46.

  14. Question #10 • We call human sex cells (sperm/egg) by this general term. • Gametes.

  15. 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.

  16. Question #12 • Why is crossing over a good thing? • Increases genetic variability.

  17. 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).

  18. 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.

  19. 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.

  20. 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.

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