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Quiz

Unit 1 Practice Test

Jessica Dewald 31 Fragen 1.065 Aufrufe Aktualisiert am 4 Sep 2024

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Fragen in diesem Quiz (31)

  1. 1A company that manufactures a popular multivitamin wanted to determine whether their multivitamin had any side effects. For the initial study, the company chose 2000 individuals to take their multivitamin tablets per day for one year. Scientists from the company surveyed the participants to determine whether they had experienced any side effects. The greatest problem with this procedure is that
    1. ANo control group was used
    2. BOnly one brand of vitamin was tested
    3. CThe sample size was not large enough
    4. DThe study lasted only one year
  2. 2In an experiment, the variable that is deliberately changed is the
    1. Acontrolled variable
    2. Bdependent variable
    3. Cindependent variable
    4. Dinferred variable
  3. 3Two garden plots were planted with corn. The soil was similar in each, and equal amounts of water were applied to each plot. One plot was fertilized, and the other was not. The experimenters measured the yield of bushels of corn from each plot. The plot that did not receive the fertilizer was the ________.
    1. AControlled variable
    2. BExperimental plot
    3. CReplicate plot
    4. DControl plot
    5. EDependent variable
  4. 4The best method for determining whether bean plants require sodium is to ________.
    1. Agrow bean plants with and without sodium
    2. Blook for sodium in leaf tissues using autoradiography
    3. Canalyze root content for sodium
    4. Dmeasure how fast radioactive sodium enters the plant
    5. Emeasure the amount of sodium in a few bean plants
  5. 5In experimental procedures, repetition of the procedures ___________.
    1. Ais necessary before concluding that a given set of results is correct
    2. Bis not necessary if the scientist obtains enough background information
    3. Cis too difficult for researchers doing fieldwork
    4. Dshould always be done by changing a variable
    5. Ewastes money that could be better spent doing new experiments
  6. 6Should an experiment test only one variable at a time? Why or why not?
    1. AAs long the experiment is repeated a sufficient number of times, it doesn't matter how many variables are used.
    2. BYes, an experiment should only test one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.
    3. CYes, and experiment should only test one variable at a time. That way, the experiment will only have to be performed once.
    4. DNo, it is not necessary to test only one variable per experiment, especially when time is of the essence.
  7. 7An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The dependent variable for this experiment is
    1. Atime the student was squeezing the clothespin
    2. Bnumber of times the student was able to squeeze the clothes bin
    3. Cstrength of the student
    4. Dlength of the clothespin
  8. 8An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The experimental result can be made more valid by
    1. Aincreasing the time
    2. Busing a plastic clothespin
    3. Cusing safety precautions
    4. Dsetting a specific type of exercise
  9. 9Which statement best describes a hypothesis?
    1. AA process of making careful observations
    2. BThe conclusion drawn from the results of an experiment is part of a hypothesis
    3. CA hypothesis serves as a basis for determining what data to collect when designing an experiment
    4. DThe data collected from an experiment written in the form of a hypothesis
  10. 10Label the X-axis.Bild zu Frage 10
    1. Adepth of water

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Beschreibung
9th grade Biology Quiz am Unit 1 Practice Test, erstellt von Jessica Dewald am 05/07/2018.
Sprache
English
Aufrufe
1.065
Verlauf
Erstellt am 5 Jul 2018 · aktualisiert am 4 Sep 2024
Schlagwörter
biology9th grade
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