Question

16 every morning a student eats a bowl of cereal with milk for breakfast. the cereal and the milk are broken down and used in the students cells during cellular respiration. an incomplete model of cellular respiration is shown.
? + ? \\(\longrightarrow\\) \\(\text{carbon dioxide}\\) + \\(\text{water}\\) + ?
which of the following models represents cellular respiration in the students cells?
a \\(\text{energy}\\) + \\(\text{food molecule}\\) \\(\longrightarrow\\) \\(\text{carbon dioxide}\\) + \\(\text{water}\\) + \\(\text{oxygen}\\)
b \\(\text{food molecule}\\) + \\(\text{oxygen}\\) \\(\longrightarrow\\) \\(\text{carbon dioxide}\\) + \\(\text{water}\\) + \\(\text{energy}\\)
c \\(\text{food molecule}\\) + \\(\text{energy}\\) \\(\longrightarrow\\) \\(\text{carbon dioxide}\\) + \\(\text{water}\\) + \\(\text{energy}\\)

Explanation:

Cellular respiration is the process where cells break down food (like the cereal and milk, which provide food molecules) and use oxygen to produce carbon dioxide, water, and energy (ATP). The correct model should have food molecule and oxygen as reactants, and carbon dioxide, water, and energy as products. Option B shows food molecule + oxygen → carbon dioxide + water + energy, which matches the cellular respiration equation ($\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2
ightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{Energy}$). Option A has energy as a reactant (incorrect, energy is a product), and Option C has energy as a reactant (also incorrect).

Answer:

B. Food molecule + Oxygen → Carbon dioxide + Water + Energy