Tag: investigation
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Investigation: Human Cheek Cells and Body Cells
This cell activity introduces students to cell size, scale, and specialization through a hands-on microscope investigation. Students prepare and observe a slide of their own cheek cells with simple laboratory instructions. Basically, students use a toothpick to gently scrape the inside of their mouth. Then, they swirl the toothpick in a drop of methylene blue…
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Science of Fingerprints: A Hands-On Activity
Fingerprint analysis is a fascinating way to explore individuality and forensic science. A lesson on this topic begins with an introduction to fingerprints, explaining their uniqueness and role in forensic investigations. Use Google slides to show students the science of fingerprinting. It covers the three main fingerprint patterns—loops, whorls, and arches—using clear diagrams and descriptions…
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Investigation: Apples and Pectinase Enzyme
In this experiment, high school students will investigate the role of enzymes by testing the effects of pectinase on apples. The objective is to compare the amount of juice extracted from apples treated with pectinase to those left untreated. In addition, students change the temperature of the solutions to compare enzyme activity at cold and…
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Investigating Sea Turtles and Sex Determination
Create a model of a turtle nest to record temperatures at different depths. The temperature of the nest will determine whether turtles are male or female.
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Investigation: Bananas, Starch, and Plastids
Explore the differences between ripe and green bananas in the activity. Green banana cells will have large dark starch granules when stained with iodine.
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Catalase Activity in Yeast Using Sodium Alginate
Create yeast spheres using sodium alginate to test the rate of enzyme reactions at different concentrations and temperatures.
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Investigation: Water Potential and Carrot Molarity
Determine the molarity of baby carrots by soaking them overnight in different solutions. The point at which the carrot does not change mass is the molarity.
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Investigation: Viewing Stomata in Zebrina Plants
View the stomata of plants with this simple activity that uses tape and fingernail polish. Great for beginning biology students!
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Investigation: How Chemicals Affect Pulse Rates
Students investigate the affect of chemicals, like caffeine on the circulatory system using a blackworm specimen.