Question

draw a model of the energy change that takes place during respiration.

Explanation:

To model energy change in respiration (cellular respiration), we know that in cells, glucose (chemical energy) and oxygen are used. The process releases energy (ATP, a form of chemical energy for the cell) and produces carbon dioxide and water. A simple model can be a flowchart or diagram: Start with "Glucose + Oxygen" (input, chemical energy), arrow to "Cellular Respiration (in mitochondria)", then arrow to "ATP (usable chemical energy) + Carbon Dioxide + Water" (outputs). Alternatively, an energy pyramid - like model showing the transformation from stored energy in glucose to usable energy in ATP, with the release of waste. The key is showing the input energy source (glucose's chemical energy), the process (respiration), and the output energy (ATP) and by - products.

Answer:

A possible model (description):

• Input: Represent glucose (e.g., as a hexagon symbol) and $O_2$ (as $O_2$ molecules) with a label "Chemical Energy (in Glucose)".
• Process: Draw a mitochondrion (or a box labeled "Cellular Respiration") with an arrow from input to this process.
• Output: Draw ATP molecules (e.g., as circles with "ATP" inside) labeled "Usable Chemical Energy (ATP)", and also draw $CO_2$ (as $CO_2$ molecules) and $H_2O$ (as $H_2O$ molecules) as waste products.

Visually, it can be structured as:

$\text{Glucose (Chemical Energy)} + \text{O}_2 \xrightarrow{\text{Cellular Respiration (Mitochondria)}} \text{ATP (Usable Chemical Energy)} + \text{CO}_2 + \text{H}_2\text{O}$

(This can be drawn as a flowchart with symbols: glucose/O₂ → mitochondrion → ATP/CO₂/H₂O, with energy labels on the arrows or next to the components.)