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Size and shape are important in astrobiology. In this activity and slideshow, students observe the importance of relative size and morphology in identifying microscopic structures when viewed with the scanning electron microscope. This activity is... (View More)

This series of six activities encourages students to think about the characteristics of life and the possibility of looking for life on Mars. The first three activities from Destination: Mars establish the criteria for recognizing life. The other... (View More)

In this activity, students develop a timeline relating technological advances, particularly in microscopy, to how scientists have classified living organisms throughout history. Students use Internet and/or library resources to investigate important... (View More)

In this activity, students will observe the relationship between temperature and metabolism. The subjects for this experiment are Saccharomyces cerevisiae, one-celled organisms more commonly known as baker's yeast. By observing the presence of... (View More)

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