What do these images say to you?

Planaria Inquiry-do now

1. Are there specific drinks that companies market to young people to purchase?

2. How do you know?

3. What idea are these ads “selling us?”

4. What should we expect when consuming these products?

5. Have any of you ever consumed these products?

Let’s think….

• What kind of ingredients are there in energy drinks? list:

• What do those ingredients do to humans?

Energy Drink Nutrition Facts

Why Planaria?

• Is it better to test on humans or another organism?

• Why?

• Model Organism definition: a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the organism model will provide insight into the workings of other organisms such as humans Source: Wikipedia.org

PLANERIA

Let’s Begin

• Let’s observe some planaria in petri dishes• Some important things to consider:

– Each group will receive 3 planaria– You will need to record baseline data of each individual planaria in spring water over the

course of 2 minutes. This is your run-time.– The planaria should remain in the experimental solutions for four minutes prior to line-

cross test.• Class Discussion:What is our classroom standard unit for measurement of line crosses?

– Design your experimental protocol• Be sure to detox planaria for four minutes in spring water between experiments• Be sure to include a control• No dilution concentration should exceed 40%. What is a dilution?• How should you collect data? Average?

Popular Drinks’ Nutrition Facts

9.5 fl. oz. Amt Per Serving

Calories 180

Total fat (g) 3

Cholesterol (mg) 5

Sodium (mg) 95

Total Carbohydrates (g) 33

Sugars (g) 31

Protein (g) 7

Calcium (%DV) 20

Caffeine (mg) 75

Calories 140

Total fat (g) 0

Sodium (mg) 45

Total Carbohydrates (g) 39

Sugars (g) 39

Protein (g) 0

Caffeine (mg) 34

12 fl. oz. Amt Per Serving

What about other drinks

that you enjoy?