Nvestigation: Cells come from existing cells. Observe the two flasks, and record information about their appearance.
Day
Flask with open (broken) neck
Flask with intact neck
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5

Investigation: Cells are the basic unit of life.

Day
Petri dish (on left) containing agar plus nutrients
Petri dish (on right) containing agar without nutrients
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5

Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
How did scientists discover that all living things are made of cells?
How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
Why are nutrients needed for living things? Describe the difference between living and nonliving things.

Does the energy in a solid increase or decrease when changing to a liquid?

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

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