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Multiple Choice
Which substance plays a major role in most of the chemical reactions that occur in a living cell?
A
Oxygen
B
Water
C
Carbon dioxide
D
Glucose
Verified step by step guidance
1
Identify the context of the problem: The question is asking about a substance that plays a major role in chemical reactions within a living cell.
Consider the role of each substance listed: Oxygen, Water, Carbon dioxide, and Glucose.
Understand the role of water in biological systems: Water is a universal solvent and is involved in many biochemical reactions, including hydrolysis and dehydration synthesis.
Compare the roles: While oxygen is crucial for respiration, carbon dioxide is a product of respiration, and glucose is a primary energy source, water is involved in almost all cellular processes.
Conclude that water's role as a solvent and participant in chemical reactions makes it the major substance in cellular reactions.