Biol-1 Lab Assignments

Like most other assignments in this course, this assignment will be graded as follows:

Check-minus: Approaches expectations.

Check: Meets expectations. Full credit.

Check-plus: Exceeds expectations. (A check-plus can compensate for a check-minus.)

Expectations for assignments

• Respond meaningfully to every part of the assignment.
• Respect your own ideas enough to present them professionally and clearly. Consider grammar, spelling, appropriate terminology, and appearance. Complete sentences are not always necessary.
• May be typed or clearly handwritten. Double-sided printing is encouraged.
• If you generate multiple pages, simply staple them together rather than using a cover.

Materials needed

• Lab manual
• One to two hours of your time for each assignment

Objectives for lab assignments

• Become thoroughly familiar with ideas and conclusions from the previous week’s lab.
• In some cases, complete extra analysis or interpretations of results.
• Prepare for the upcoming lab.

Lab 1 Assignment

• Lab 1 conclusions: Please complete all parts of pages 5 – 19 of your lab manual. Trim off the ragged edges. 

• Lab 2 pre-lab: Please attach your responses to the end of your Lab 1 pages, and turn them in together.

1. What are two of the safety and disposal alerts for Lab 2?

2. What are enzymes?

3. What are some ways that enzymes can be disrupted, or “denatured”?

Lab 2 Assignment

• Lab 2 conclusions:
  • Complete Data Table I on page 24.
  • Complete Part D: Wise Food Choices (pp 27-28)
  • Complete Parts II through IV (pp 28-40)
  • Complete questions 2-7 on page 42

• Lab 3 pre-lab:

1. In your own words, what are two of the safety and disposal alerts for Lab 3?

2. If I mix some salt into water, which is the solvent and which is the solute?

3. How do you make a wet mount slide?

4. On our microscopes, which is the only focus knob you can use when under the high-power

objective?

Lab 3 Assignment

• Lab 3 conclusions:
  • Answer questions in the lab manual related to Part I.
  • Do appropriate drawings (Onion, Elodea, Cheek Cell, Amoeba, Vorticella, Paramecium, Trichonympha, Pond Water)
  • Make sure you label all your drawings as indicated in the lab manual.
  • If you did not get a chance to see some of the organisms, use the following links for your drawings:
    • Amoeba proteus
    • Paramecium
    • Vorticella
    • Trichonympha
    • Pond Water
  • Answer all of the Part I Review Questions.
  • Answer the following Part II questions: 1-6 and 9-12 on page 57.

• Lab 4 pre-lab: Use your own words to respond to the following questions. It may help to give examples.

1. When thinking about an object, what is the difference between "surface area" and "volume"?

2. What is a ratio?

3. What is turgor pressure?

4. How will we dispose of the silver nitrate we use in this lab?