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Step 1:I'll solve this step-by-step using the specified LaTeX formatting guidelines:
Step 2:: Analyze the Fermentation Equations
Alcoholic Fermentation: $$C_{6}H_{12}O_{6} \rightarrow 2C_{2}H_{5}OH + 2CO_{2}
Let's carefully examine the equations for lactic and alcoholic fermentation:
Step 3:: Compare the Reactants and Products
- Both fermentation types start with glucose ($$C_{6}H_{12}O_{6}$$)
- They produce different end products - Lactic fermentation produces lactic acid - Alcoholic fermentation produces ethanol and carbon dioxide
Step 4:: Identify Common Reactants
Looking at the given options: a) ✓ Glucose is the common reactant b) ✓ Carbon dioxide and water are common reactants c) ✗ Incorrect - ethanol is a product, not a reactant d) ✗ Incorrect - oxygen is not involved in these fermentation processes
Final Answer
Glucose (C_{6}H_{12}O_{6}) is the common reactant in both lactic and alcoholic fermentation.
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