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Doug and Virginia wanted to find out if temperature affects the growth of mould on bread. At lunch, they asked nine friends to donate a piece of bread for this experiment. They put nine pieces of bread in nine identical flasks as follows: 3. 4. 5. I 6. • ● Three of the flasks were kept in a refrigerator (temperature about +4°C). Three of the flasks were kept at room temperature (about +20°C). Three flasks were kept in a lab oven at +90°C. Write a hypothesis. What was the significant difference between the nine flasks? Name three ways Doug and Virginia kept the experiment conditions constant. Why would the flasks need to be closed? Explain. 7. The students made at least one error in performing the experiment. Suggest what this error was and explain how it could be corrected.

Doug and Virginia wanted to find out if temperature affects the growth of mould on bread. At lunch, they asked nine friends to donate a piece of bread for this experiment. They put nine pieces of bread in nine identical flasks as follows: 3. 4. 5. I 6. • ● Three of the flasks were kept in a refrigerator (temperature about +4°C). Three of the flasks were kept at room temperature (about +20°C). Three flasks were kept in a lab oven at +90°C. Write a hypothesis. What was the significant difference between the nine flasks? Name three ways Doug and Virginia kept the experiment conditions constant. Why would the flasks need to be closed? Explain. 7. The students made at least one error in performing the experiment. Suggest what this error was and explain how it could be corrected.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Doug and Virginia wanted to find out if temperature affects the growth of mould on bread. At lunch, they asked nine friends to donate a piece of bread for this experiment. They put nine pieces of bread in nine identical flasks as follows: • Three of the flasks were kept in a refrigerator (temperature about +4°C). • Three of the flasks were kept at room temperature (about +20°C). • Three flasks were kept in a lab oven at +90°C. 3. 4. 5. 6. Write a hypothesis. What was the significant difference between the nine flasks? Name three ways Doug and Virginia kept the experiment conditions constant. Why would the flasks need to be closed? Explain. 7. The students made at least one error in performing the experiment. Suggest what this error was and explain how it could be corrected.
Transcribed Image Text:Doug and Virginia wanted to find out if temperature affects the growth of mould on bread. At lunch, they asked nine friends to donate a piece of bread for this experiment. They put nine pieces of bread in nine identical flasks as follows: • Three of the flasks were kept in a refrigerator (temperature about +4°C). • Three of the flasks were kept at room temperature (about +20°C). • Three flasks were kept in a lab oven at +90°C. 3. 4. 5. 6. Write a hypothesis. What was the significant difference between the nine flasks? Name three ways Doug and Virginia kept the experiment conditions constant. Why would the flasks need to be closed? Explain. 7. The students made at least one error in performing the experiment. Suggest what this error was and explain how it could be corrected.
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