Biology Unit 1 Test Review/Study Guide

Safety Equipment & Practices:

  1. Which of the following is not a proper way to dress for lab?
  2. Closed-toe shoes
  3. Baggy/loose clothing
  4. Goggles covering your eyes
  5. Lab apron covering your clothes
  6. True or False: Long hair must always be tied back when using an open flame in lab.
  7. True or False: It is permissible to transport & dispose of substances without your teacher’s consent.
  8. When using sharp objects, do all of the following except:
  9. Carry them tip down
  10. Refrain from catching them if they are falling
  11. Use them to carve your name on your lab table
  12. Always cut away from your body
  13. True or False: It is permissible to carry a microscope with one hand.
  14. True or False: Eating & drinking in the lab are permissible if you wash your hands or use clean glassware.
  15. When dealing with flammable substances, what piece of safety equipment is necessary?Fire extinguisher

Hypothesis or Not:

  1. What is a hypothesis?A possible explanation for a problem or question that can be tested.
  2. What criteria should a valid hypothesis have?
  3. If, then, because statement
  4. Cannot be an opinion
  5. Can be formally tested
  6. When does a hypothesis change to a theory?When it is supported with repeated testing
  7. Hypothesis or Not:
  8. A plant that is grown with fertilizer will grow taller than a plant grown without fertilizerHYPOTHESIS
  9. German Shepherds are friendlier than Great DanesNOT
  10. If a person plays the lottery, they will become richNOT

Scientific Method:

  1. What is biology?The study of living things, their systems, interactions, and surroundings.
  1. What are the steps of the scientific method?State the Problem, Form a Hypothesis, Experimental Procedures (create and then perform), Collect Data & Analyze, and Conclusion
  2. What step should you take if your hypothesis is rejected?Modify the experiment, and try again
  1. True or False: You only need to perform an experiment once to validate your hypothesis.

Experimental Design:

  1. How many variables should a good experiment test at one time?An ideal experiment only has one independent variable
  1. What is a dependent variable?The variable that is measured, recorded, and observed; responds according to the independent.
  2. What is an independent variable?The variable that is purposely changed to be tested.
  1. What is the control group?The group that does not receive any treatment.
  1. What is a constant?The variables that are not changed, they are kept the same for experimental and control group.
  2. Read the following paragraph & answer the questions below.

The Calallen High School AP Biology class conducted an experiment to determine the effects of Wal-Mart brand food on grass growth. Two plots of grass located in the same yard were used. Both plots received 10 hours of sunlight per day, one inch of water per week, and were maintained at 29 degrees C for a period of 30 days. Once every seven days, plot A received 3 grams of Wal-Mart brand plant food dissolved in that day’s water supply. Plot B did not receive any plant food throughout the experiment.

  1. What is the control group?Plot B, which does not receive plant food
  2. What is the independent variable?Wal-Mart brand plant food
  3. What is the dependent variable?Growth of grass
  4. What are the constants?10 hours of sunlight per day, one inch of water per week, and 29 ⁰C
  1. Read the following paragraph & answer the questions below.

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the KrustyKrab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just a mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

  1. Which people are in the control group?Group B
  2. What is the independent variable?The new sauce
  3. What is the dependent variable?Reduction of gas
  4. What should Mr. Krabs’ conclusion be?The new sauce helped some individuals with their gas, it was mostly effective