Transformations in Matter and Energy Carbon TIME is an NSF-funded partnership led by Michigan State University
Activity 5.4 - Explaining How Cows Grow: Biosynthesis (40 min)
Target Student Performance
Students explain how matter moves and changes and how energy changes during biosynthesis in a cow’s cells (connecting macroscopic observations with atomic-molecular models and using the principles of conservation of matter and energy).
Note: This lesson should be taught, regardless of it you taught only Activity 5.1 or both Activity 5.1 and 5.2. However, the language you use and the responses you should expect from your students will be different. Students who did 5.2, molecular modeling, should use the terms “polymers” and “monomers” in their explanations of digestion and biosynthesis, including the names of specific polymers (e.g., proteins, fats and carbohydrates) and monomers (e.g., amino acids, fatty acids, glycerol). Students only did 5.1 should use the terms "large organic molecules" and "small organic molecules" rather than polymers and monomers and use the names of specific large organic molecules (e.g., proteins, fats and carbohydrates) only. Throughout the PPT, you will find both sets of vocabulary.
Resources You Provide
- (From previous lesson) 3.3 Evidence-Based Arguments for Mealworms Eating
- 5.4 Explaining How Cows Grow: Biosynthesis PPT
- 5.4 Explanations Tool for Cow Biosynthesis (1 per student)
- 5.4 Grading the Explanations Tools for Cow Biosynthesis
- (Optional) 5.4 How do Animals Grow? Reading (1 per students)
- (Optional) Big Idea Probe: What Happens to the Fat? (1 per student)
- (Optional) Assessing the Big Idea Probe: What Happens to the Fat?
- (Optional) Example Animal Explanations Handout (1 per student or per group)
- Animals Matter Tracing Tool (1 per class)
- Assessing the Animals Matter Tracing Tool
- Learning Tracking Tool for Animals
- Assessing the Learning Tracking Tool for Animals
- Three Questions 11 x 17 Poster (1 per class)
- Three Questions Handout (Color Version)
- Three Questions Handout (BW Version)
- Digestion and Biosynthesis of Carbohydrates 11 x 17 Poster
- Digestion and Biosynthesis of Fat 11 x 17 Poster
- Digestion and Biosynthesis of Protein 11 x 17 Poster
- Metabolic Pathways 11 x 17 Poster (1 per class)
Print one copy of the 5.4 Explanations Tool for Cow Biosynthesis, and the 5.4 How do Animals Grow? Reading (if you choose to use it) for each student. If you are using it, print one copy of the Big Idea Probe: What Happens to the Fat? for each student. Prepare a computer and a projector to display the PPT. Print and hang the Digestion and Biosynthesis 11 x 17 Posters and Metabolic Pathways 11 x 17 Poster. In this activity, your students will need to use the Three Questions Explanation Checklist on the back of the Three Questions Handout. Be sure to have this available to students, and see the notes in the Modifications at the end of the Activity for ideas about how to use it.
Use 5.4 Grading the Explanations Tools for Cow Biosynthesis to grade student responses. This worksheet has “grading” in the title (instead of “assessing”) because at this point, students can be held accountable for correct answers. If students are still struggling with these concepts, you may want to revisit parts of the activity they are finding difficult. Use Assessing the Animals Matter Tracing Tool to grade the matter tracing tool.