Bio Test 2

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Author:
lrsimon
ID:
56019
Filename:
Bio Test 2
Updated:
2010-12-14 19:21:15
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Bio semesters
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Lab activity
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  1. You suggest that water could accelerate the growth of bread mold. This is an (a):
    HYPOTHESIS
  2. Which of the following is not considered a safety procedure:
    a. follow your teachers instructions
    b. if in doubt of any part, trust instincts
    c. follow textbook's direction exactly
    d. Read all steps of activity before doing it.
    B
  3. Which is a valid hypothesis for why a plant is dying?
    a. The plant is receiving too much sunlight
    b. The plant is not being watered enough
    c. The plant is being watered too much
    d. all of the above
    D
  4. Information gathered from a observing a plant grow 3 cm. over a two week period results in:
    DATA
  5. A controlled experiment allows the scientists to isolate and test:
    A SINGLE VARIABLE
  6. T/F. In a normal distribution, 58% of the measurements will be within one standard deviation of the mean.
    FALSE 68%
  7. If the fan speed is increased, then the wind will make more electricity. This is a conclusion.
    FALSE: hypothesis.
  8. The variable that is deliberately changes is called the dependent variable.
    FALSE: independent variable.
  9. A number of rats are divided into two groups: One group is fed a normal diet, whereas the other group is in the same diet but with one necessary mineral left out. The animals receiving the original diet remained healthy, those in the other group grew weaker. What is the independent variable in this study?
    The mineral in the diet of the second group is the independent variable. THE MINERAL.
  10. Why is a universal system of measurements necessary in science?
    Because scientists must have a common type of measurement in order to understand results of any other experiment. So they can understand each other and be talking about the same amounts.

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