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16 June, 21:06

A sample of digestive juice was removed from the stomach of a pig. The juice was placed in a test tube along with some grains of wheat. A second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. The test tubes were kept for 8 hours at 40 degrees C. After 8 hours the grains inside the digestive juice had broken into tiny particles. The grains of wheat, in the water, were wet but otherwise unchanged.

1. What is the control group?

2. What is the experimental group?

3. What is the independent variable?

4. What is the dependent variable?

5. Name a controlled variable or constant.

6. Was quantitative or qualitative data collected?

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Answers (2)
  1. 16 June, 21:48
    0
    1. The group with distilled water is the control group.

    2. The group using the pig juice is the experimental group.

    3. The independent variable is the type of liquid the grain was soaked in.

    4. The dependent variable is how the grains of wheat were changed

    5. A constant in this experiment would be the time they were soaked or the temperature they were soaked in.

    6. Qualitative data was collected because the changes could be physically observed.
  2. 17 June, 00:16
    0
    A sample of digestive juice was removed from the stomach of a pig. The juice was placed in a test tube along with some grains of wheat. A second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. The test tubes were kept for 8 hours at 40 degrees C. After 8 hours the grains inside the digestive juice had broken into tiny particles. The grains of wheat, in the water, were wet but otherwise unchanged.

    What is the control group? Test tube that contains both water and grains of wheat

    What is the experimental group? Test tube that contains grains of wheat and digestive juice

    What is the independent variable? Distilled water

    What is the dependent variable? Digestive juice

    Name a controlled variable or constant. Grains of wheat

    Was quantitative or qualitative data collected? Qualitative data collected
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