Food Analysis Lab

We've been testing for Carbohydrates, Proteins, and Fats in lab this week.  These are the compounds that make up our food and us!  Compounds are made up of elements and elements are made up of atoms.  Do you remember what atoms are made up of?  What is the lightest element?  What one element do all living things share? 

15 Must-Know Elements for Biology: H, C, O, N, Na, Ca, K, Cu, Fe, He, Zn, Al, Au, S, P


Testing for Starch



Testing for Protein









Testing for Lipids





Scientific Method

1. Question/Purpose
2. Form a Hypothesis (Educated guess)
3. Test your hypothesis (experiment...after writing the steps to the procedure)
4. Make observations (record data)
5. Analyze your data (put into graphs and charts...what did your experiment show?)
6. Draw a conclusion (Was your hypothesis correct?)
7. Share your results

The 7th graders hypothesized that these sponge critters (pictured below) would come out faster in hot water.  They reviewed and used the steps of the Scientific Method to prove it!

Having a Metric "Ball"

King Henry Died Drinking Chocolate Milk!

1000, 100, 10, .10, .01, .001

Base units are meters, liters, grams

We do NOT use inches, feet, ounces, gallons, etc in Science!

We Now Know How to Measure Up!

Just say "NO" to inches, feet, pounds, fahrenheit, ounces, and gallons in biology class!  Scientists use the metric system to measure! 

Mrs. D's Metric Podcast

Enjoy!
-Mrs. Dokken

Microscopic Stuff!

We've got the procedure for using microscopes down to a science! Ha ha! We checked out protists like amoebas, paramecium, and euglenas, and also the living animal specimens hydra, daphnia, and planarian flatworms!  It was cool!