This activity corresponds to the topic of Photosynthesis and Cellular Respiration, in which you can explore photosynthesis and cellular respiration through five interactive activities.
Choose the activity that interests you and complete it. Each activity has its own specific instructions.
🌿 Interactive Diagram
Click on each part of the diagram to learn what happens at each stage of photosynthesis and cellular respiration.
👆 Click on any element of the diagram to see detailed information about that stage or molecule.
🔀 Order the Stages
Drag each step to the correct place in the sequence. There are two processes to order.
🌿 Photosyntesis — Order the 4 steps
🍬 Glucose synthesis
☀️ Light absorption
💨 O₂ release
⚡ Chlorophyll excitation
Step 1:
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Step 2:
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🔴 Cellular Respiration — Order the 4 steps
⚡ Electron chain
🍬 Glycolysis
🔋 ATP Production
♻️ Krebs cycle
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❓ Comprehension Quiz
Answer the questions. At the end you will see your score and the explanations.
1. In which cellular organelle does photosynthesis occur?
Mitochondrion
Chloroplast
Nucleus
Ribosome
The chloroplast contains chlorophyll, the green pigment that captures light energy and transforms it into chemical energy.
2. What is the main energy product of cellular respiration?
Glucose
CO₂
ATP
O₂
ATP (adenosine triphosphate) is the "energy currency" of the cell. Aerobic cellular respiration produces up to 36-38 ATP molecules per glucose.
3. What gas does photosynthesis release as a byproduct?
CO₂
O₂
N₂
H₂
During the photolysis of water in photosynthesis, H₂O molecules split and oxygen (O₂) is released as a byproduct into the environment.
4. Where does glycolysis occur?
Mitochondrion
Cytoplasm
Chloroplast
Nucleus
Glycolysis occurs in the cytoplasm (cytosol) and is the first step of cellular respiration. It does not require oxygen and produces 2 pyruvate molecules.
5. Which statement best describes the relationship between photosynthesis and cellular respiration?
They are identical processes in reverse.
They are complementary processes: the products of one are the reactants of the other.
Only animals perform cellular respiration.
Both produce glucose as a final product.
Photosynthesis produces glucose and O₂, which are the reactants for cellular respiration. In turn, respiration produces CO₂ and H₂O, which are reactants for photosynthesis. They form a complementary cycle.
⚗️ Complete the Equations
Write the correct coefficients to balance the chemical equations for both processes.
🌿 Photosynthesis Equation
CO₂+H₂O→C₆H₁₂O₆+O₂
💡 Hint: How many CO₂ molecules are needed to form one glucose? (C₆H₁₂O₆)?
🔴 Cellular Respiration Equation
C₆H₁₂O₆+O₂→CO₂+H₂O
💡 Hint: How many O₂ molecules are consumed when glucose is completely oxidized?
🔄 Compare and Classify
First, review the key differences, then classify each feature into the correct process.
🌿 Photosynthesis
📍Location: Chloroplast (thylakoids and stroma)
🔁Type: Anabolic (builds molecules)
⬆️Energy: Absorbs sunlight
📥Reactants: CO₂ + H₂O + light
📤Products: Glucose + O₂
🌱Who?: Plants, algae, cyanobacteria
🔴 Cellular Respiration
📍Location: Cytoplasm and mitochondria
🔁Type: Catabolic (breaks down molecules)
⬇️Energy: Releases ATP (chemical energy)
📥Reactants: Glucose + O₂
📤Products: CO₂ + H₂O + ATP
🦠Who?: Almost all living beings
🎯 Activity: Classify each characteristic/div>
Click on a card, then on the process it belongs to. Place them all correctly!