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Class Topics

Hand in W.S. “Are Viruses Alive/The Science of Life” before the bell rings Review Lab Safety and Equipment quiz Chapter 1 Quiz 1 Jello Lab

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Class Topics

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  1. Hand in W.S. “Are Viruses Alive/The Science of Life” before the bell rings Review Lab Safety and Equipment quiz Chapter 1 Quiz 1 Jello Lab “How far you go in life depends on you being tender with the young, compassionate with the aged, sympathetic with the striving, and tolerant of the weak and the strong. Because someday in life you will have been all of these.” George Washington Carver To continue learning about the scientific method assess learning about living things. Title: Biology 8/29/06 Class Topics Objectives: Thursday, January 2, 20205:53 PM

  2. Class Assignments What By When • W.S. Are Viruses Alive/The Science of Life 8/29/06 • Chapter 1 Quiz 1 8/29/06 • Read 14-20 8/31/06 • Deer: Predation or Starvation 8/31/06 • 2A only – Measurement W.S. 8/31/06 • Due this class period • Due next class period • Due in the future

  3. Grade Sheet

  4. Postquiz Activities • Hand in quiz • Place it in the tray • Pick up a W.S. “Deer: Predation or Starvation” on the lab stool • Work on the worksheet or correct homework

  5. W.S. Deer: Predation or Starvation • Make the graph on the second page • Note that the number of deer are listed on the left vertical axis while the number of wolves are listed on the right vertical axis • The third question is on the last page

  6. Terminology • Variable - the factor that was different between groups • Control group - not exposed to variable • Experimental group - exposed to variable • repeatable - all experiments have to be able to be repeated • Falsifiable – it has to be able to be proven untrue

  7. Scientific Method • Hypotheses are not guesses, they are possible explanations to the problem • A hypothesis that is not supported by data • Usually predicts a different observation • Scientists design experiments with a result in mind

  8. Conclusion Analyze Data Collect Data Experiment Hypothesis Problem Research

  9. Problem • What detergents will digest Jello? • What detergents digest the most Jello? • Brainstorm: 3 minutes • Why would some detergents digest Jello? Be specific!

  10. Research • What in Jello is being digested by detergents? • What in detergents is digesting the Jello? • Links for research • Gelatin • What are enzymes? • Enzymes and detergents • Detergents’ enzymes

  11. Eye safety • Goggles • Protect your eyes, not your forehead • Do NOT consume any materials • DO NOT eat the Jello or chew on the straw Lab Safety Review

  12. Petri Dish with Jello • Drinking Straw • For making wells • Detergents • Independent variables • Metric ruler • Be precise and be accurate Materials • Distilled water (use pipette) • Control

  13. Hypothesis • Determine a hypothesis for all of your Jello wells. • Tips • Remember your independent variable • What are you changing? • What is your control? • Remember your dependent variable • What are you measuring? • Is it quantitative? • How are you measuring it?

  14. Experiment • Follow the guidelines on the laboratory handout • Working cooperatively • Determine your role within the group • Determining factor – height

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