Energy Handshake Slides The Energy Handshake
Photosynthesis & Cellular Respiration
The Core Concept
Life is an Interdependent Cycle.
"The products of one process are the reactants for the other."
Think of it like a rechargeable battery: Photosynthesis charges it, and Respiration uses the power.
Photosynthesis
Respiration
SunCo: The Producer
Input: Energy
The Location
Chloroplasts
• Green pigment (Chlorophyll)
• Captures light energy
The Reaction
H₂O + CO₂
Reactants
Light Energy
Sugar + O₂
Products
MitoCorp: The Powerhouse
Output: Work
The Location
Mitochondria
• Found in BOTH plants and animals!
• The energy factory
The Reaction
Sugar + O₂
Reactants
ATP
(Chemical Energy)
H₂O + CO₂
Products
Cycling of Matter
CO₂ & H₂O
Atmosphere / Earth
Glucose & Oxygen
Biomass (Food)
Photosynthesis
Builds Matter
Respiration
Breaks Down Matter
One-Way Energy Flow
Light
Glucose
Stored Chemical Energy
Work / Heat
Used Energy
Energy enters as light, is stored in chemical bonds, and leaves the organism as heat or movement.
Molecular Map Worksheet Molecular Mapping
Connecting the Energy Handshake
Name:
Date:
The Chemical Mirror
Fill in the missing molecules and energy types for each reaction. Notice how the products of one become the reactants of the other.
Photosynthesis (Occurs in Chloroplasts)
Light Energy
Cellular Respiration (Occurs in Mitochondria)
ATP Energy
Tracing the Carbon Atom
Imagine a carbon atom floating in the air as part of a CO₂ molecule. Describe the journey it takes through a plant and then into an animal. Be specific about what molecule it is part of at each step.
Step 1: The Atmosphere to the Plant
Step 2: Inside the Plant (Transformation)
Step 3: The Plant to the Animal (Transfer)
Step 4: Inside the Animal to the Atmosphere
Energy Flow Logic
Energy Flow Observation:
Matter is recycled (it goes around in a circle). Energy, however, flows in one direction. Why doesn't energy recycle back to the sun?
The "Handshake" Connection:
If plants vanished from the planet, what would happen to the cycling of matter? Support your answer using evidence from the chemical equations.
Cycle Circuit Project Guide The Cycle Circuit
Project Choice Board & Guide
Student:
Due Date: ________________
The Mission
Life on Earth is powered by a continuous loop. Matter (carbon, oxygen, hydrogen) is recycled over and over, while energy (from the sun) flows through organisms to keep them running. Your task is to construct a scientific explanation that shows how photosynthesis and cellular respiration work together to keep the "Cycle Circuit" alive.
Choose Your Creative Path
TRAVEL GUIDE
The Carbon Commute
Create a travel brochure for a single Carbon atom. Describe its journey from the atmosphere into a glucose molecule, through an animal, and back into the air.
Must include "Pit Stops" (Organelles)
Illustrate the transitions
BUSINESS SCRIPT
Molecular Merger
Write a script for a "corporate merger" meeting between SunCo (Chloroplasts) and MitoCorp (Mitochondria). The CEO must explain why they need each other's products.
Mention "Shipping" (Molecules)
Focus on Energy Profit (ATP)
COMIC STRIP
Heroic Energy
Design a 6-8 panel comic strip featuring "Solar Sentinel" (Light Energy) and "The Bio-Builders" (Reactants) saving the cell from an energy crisis.
Show the chemical transformations
Dynamic sound effects (ZAP! RECYCLE!)
Project Requirements
Regardless of which path you choose, your scientific explanation MUST include evidence for:
Matter Cycling
Identify reactants and products for both processes.
Explain how Carbon atoms move between living things and the air.
Energy Flow
Explain how light energy is captured and stored in glucose bonds.
Explain how organisms "re-release" that energy to do work (ATP).
Initial Brainstorming
My Chosen Path:
Core Evidence (Facts I must use):
Visual Sketches or Draft Notes:
Cycle Project Rubric Project Rubric
The Cycle Circuit: Scientific Explanation
Score:
/ 20
Criteria Exceptional (5) Proficient (4) Developing (2-3) Matter Cycling
Tracing molecules like Carbon, Oxygen, and Water.
| Clearly traces the movement of specific molecules through BOTH processes. Explains how products of one become reactants for the other. | Traces the movement of molecules through both processes. Identifies most reactants and products correctly. | Lists some reactants or products. Relationship between the two processes is unclear or missing. |
|
Energy Flow
Capturing light and releasing chemical energy.
| Explains the transformation from light energy to chemical bonds (glucose) and finally to ATP/work. Uses evidence from chemical reactions. | Identifies that energy comes from the sun and is used by the organism. Mentions glucose or ATP. | Mentions energy or sun, but does not explain how it is stored or used within the cell. |
|
Scientific Evidence
Using facts and data to support the explanation.
| Incorporates specific scientific terms (Organelles, Reactants, Products, ATP, Glucose) accurately into the creative narrative. | Uses most scientific terms accurately. Narrative supports the scientific concepts well. | Scientific terms are used incorrectly or are missing. Narrative is mostly non-scientific. |
|
Creative Execution
Clarity, design, and engagement.
| Project is highly engaging, polished, and uses the chosen format (comic/brochure/script) to its full potential. | Project is clear and follows the format well. It is neatly presented and easy to follow. | Project is incomplete or messy. The format does not help explain the scientific concepts. |
Teacher Feedback
Strengths:
Growth Opportunities:
One thing I am proud of in this project:
Scientific Explanation Planner The Explanation Blueprint
Drafting Your Scientific Evidence
Student Name:
Before you start your creative project (comic, brochure, or script), you must plan your scientific explanation. Use this blueprint to organize your Claim, Evidence, and Reasoning to meet standard MS-LS1-6.
The Scientific Question:
How do photosynthesis and cellular respiration work together to cycle matter and flow energy through an ecosystem?
The Claim
Write 1-2 sentences that answer the scientific question above.
Scientific Evidence
What facts, chemical equations, or data support your claim? Be sure to mention specific molecules (matter) and energy types.
Matter Cycling Evidence (The Recycled stuff):
Energy Flow Evidence (The Power stuff):
The Reasoning
Explain how your evidence supports your claim. Why do these two processes NEED each other?
Once this blueprint is complete, you are ready to begin your creative project execution!
