1. Why is this considered a manipulative experiment? 2. What is the hypothesis being tested? ripening and is the variety i 3. Create a prediction for the hypothesis being tested in an "if then statement. 4. Identify the following parts of a manipulative experiment from the example above: a. Independent variable b. Dependent variable c. Control group(s)

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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B. Identify the parts of a manipulative experiment
from other plant hormones as it is the only gaseous hormone. We often make use of this
Ethylene is a hormone produced by many plants to initiate the ripening of fruit. It is unique
still present, the fruit can ripen. The bag serves to capture the gas around the fruit and
hormone when we purchase under-ripe fruit and place it in a paper bag. If adequate ethylene is
concentrate it. Ethylene also stimulates plant growth in the spring after winter dormancy.
be used to ripen tomatoes that are picked early due to frost. You take 500 tomatoes and divide
As an employee of a biotech firm, you've been asked to develop an ethylene chamber that can
million (ppm) of ethylene. Group 2 is placed in a chamber with 100 ppm of ethylene. Group 3 is
them into four groups of 125 tomatoes each. Group 1 is placed in a chamber with 0 parts per
placed in a chamber with 250 ppm of ethylene. Group 4 is placed in a chamber with 500 ppm
ethylene. Each tomato was picked a week before ripening and is the variety known as "Flavor-
saver."
1. Why is this considered a manipulative experiment?
2. What is the hypothesis being tested?
3. Create a prediction for the hypothesis being tested in an "if then statement.
4. Identify the following parts of a manipulative experiment from the example above:
a. Independent variable
b. Dependent variable
c. Control group(s)
d. Experimental group(s)
e. Controlled variables (name at least 2)
Unit 1, page 18
Transcribed Image Text:B. Identify the parts of a manipulative experiment from other plant hormones as it is the only gaseous hormone. We often make use of this Ethylene is a hormone produced by many plants to initiate the ripening of fruit. It is unique still present, the fruit can ripen. The bag serves to capture the gas around the fruit and hormone when we purchase under-ripe fruit and place it in a paper bag. If adequate ethylene is concentrate it. Ethylene also stimulates plant growth in the spring after winter dormancy. be used to ripen tomatoes that are picked early due to frost. You take 500 tomatoes and divide As an employee of a biotech firm, you've been asked to develop an ethylene chamber that can million (ppm) of ethylene. Group 2 is placed in a chamber with 100 ppm of ethylene. Group 3 is them into four groups of 125 tomatoes each. Group 1 is placed in a chamber with 0 parts per placed in a chamber with 250 ppm of ethylene. Group 4 is placed in a chamber with 500 ppm ethylene. Each tomato was picked a week before ripening and is the variety known as "Flavor- saver." 1. Why is this considered a manipulative experiment? 2. What is the hypothesis being tested? 3. Create a prediction for the hypothesis being tested in an "if then statement. 4. Identify the following parts of a manipulative experiment from the example above: a. Independent variable b. Dependent variable c. Control group(s) d. Experimental group(s) e. Controlled variables (name at least 2) Unit 1, page 18
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