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Horizon Life Science Sample Lessons
How do we know that glucose gives us energy? What about drinks that taste sweet but have no sugar? What about drinks called Energy Drinks? Let's take a look at the science:
Which "energy drinks" provide real energy for our cells?
Fill about 6 water bottles or conical flasks 1/3 full with different warm drinks. Some sugary fruit juice. Some sugar-free with sweetener. An "energy drink" and pure water.
Label each 1-6. It helps to know what each one is if you put the actual drink containers behind the yeast containers.
Add a teaspoon of Fleischmann's yeast to each. Put balloons on the necks of the bottles/flasks. Keep the bottles equally warm.
Yeast produces carbon dioxide from both cellular respiration and fermentation. We use these bubbles to help bread rise and to make alcohol.
Watch what happens! Take a picture after you have a couple of balloons inflate.
Graph the results
Graph the results
The Data
The Data
Write a data table in your lab book.
Column 1: Use food labels to gather information about Calories per 8 fluid ounces for each drink.
Column 2: Use the image you took to help you score: fully inflated score 4-5, partially inflated score 2-3, and hardly inflated score 1.
Make a graph using the data.
Now answer the science question in your lab book:
Which "energy drinks" provide real energy for our cells?
What evidence supports your claim? (Use the numbers in your graph as evidence).
From the desk of Hannah Robinson
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