Biology
Grade-7
Easy
Question
Chemical reactions are connected in _____.
- Chains
- Cells
- Road
- None of these
Hint:
A chemical reaction involves the metabolism of a chemical molecule or a compound
The correct answer is: Chains
- A chemical reaction involves the metabolism of a chemical molecule or a compound
- The result of a chemical reaction can produce energy or produce a new molecule
- The reactions that occur inside a cell are a chain or sequence of reactions
- For example, glycolysis is a catabolic reaction that does not occur in a single step
- Initially, a glucose molecule is converted into glucose-6-phosphate, which undergoes a further sequence of reactions to produce the pyruvate and ATP
- The pyruvate formed is not the ultimate product but enters the Krebs cycle and further processes follow
- Hence, a chemical reaction is a chain of reactions
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STATEMENT-2:
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