Question

based on the two models and what you have learned, draw your own model to represent the processes of photosynthesis and respiration. remember good models should include arrows, labels, and/or symbols your model must be your own and not the same as the two provided or your classmates

Explanation:

To solve this, we first recall the equations:

• Photosynthesis: \( \text{Carbon Dioxide} + \text{Water} \xrightarrow[\text{Chlorophyll}]{\text{Sunlight}} \text{Glucose} + \text{Oxygen} \) (or \( 6\text{CO}_2 + 6\text{H}_2\text{O} \xrightarrow{\text{Light Energy}} \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \)).
• Respiration: \( \text{Glucose} + \text{Oxygen}

ightarrow \text{Carbon Dioxide} + \text{Water} + \text{Energy} \) (or \( \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2
ightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{ATP} \)).

Step 1: Design the Photosynthesis Model

• Inputs: Draw arrows labeled “\( \text{CO}_2 \) (Carbon Dioxide)” and “\( \text{H}_2\text{O} \) (Water)” pointing toward a shape (e.g., a leaf or a chloroplast icon).
• Energy Source: Add a sun symbol with an arrow labeled “Sunlight” toward the leaf.
• Outputs: Draw arrows from the leaf labeled “\( \text{C}_6\text{H}_{12}\text{O}_6 \) (Glucose)” and “\( \text{O}_2 \) (Oxygen)” pointing outward.
• Label the Process: Write “Photosynthesis” above the leaf, and include “Chlorophyll” (if using a chloroplast) to show the pigment.

Step 2: Design the Respiration Model

• Inputs: Draw arrows labeled “\( \text{C}_6\text{H}_{12}\text{O}_6 \) (Glucose)” and “\( \text{O}_2 \) (Oxygen)” pointing toward a shape (e.g., a cell or a mitochondrion icon).
• Outputs: Draw arrows from the cell labeled “\( \text{CO}_2 \) (Carbon Dioxide)”, “\( \text{H}_2\text{O} \) (Water)”, and “Energy (ATP)” pointing outward.
• Label the Process: Write “Cellular Respiration” above the cell, and include “Mitochondrion” (if using a mitochondrion) to show the organelle.

Key Elements for Both Models

• Use arrows to show the flow of matter (inputs → outputs).
• Include labels for all reactants, products, and energy (sunlight for photosynthesis, ATP for respiration).
• Differentiate the two processes with distinct shapes (leaf vs. cell) or colors.

Answer:

Photosynthesis Model (Example Sketch Description):

• Draw a green leaf.
• Arrows: \( \text{CO}_2 \) (from air) → leaf; \( \text{H}_2\text{O} \) (from roots) → leaf; Sun symbol → leaf (label “Sunlight”).
• Arrows from leaf: \( \text{O}_2 \) → air; \( \text{Glucose} \) → plant (for growth/storage).
• Label: “Photosynthesis” (above leaf), “Chlorophyll” (inside leaf).

Respiration Model (Example Sketch Description):

• Draw a blue cell with a mitochondrion (oval inside).
• Arrows: \( \text{Glucose} \) (from plant’s food) → cell; \( \text{O}_2 \) (from air) → cell.
• Arrows from cell: \( \text{CO}_2 \) → air; \( \text{H}_2\text{O} \) → environment; “Energy (ATP)” → cell (for activities).
• Label: “Cellular Respiration” (above cell), “Mitochondrion” (inside cell).

(Note: The actual drawing should be hand-sketched in the provided box, including arrows, labels, and symbols to clearly show the processes.)