Why is respiration considered a slow and controlled energy-releasing process compared with combustion?
Answer and explanation
Correct answer: Because glucose is oxidised through enzyme-controlled steps, releasing energy gradually.
In respiration, glucose is oxidised in many enzyme-controlled steps. Therefore, energy is released gradually rather than suddenly as heat and light, and part of it is captured in ATP. In contrast, combustion is usually a rapid oxidation process in which energy is released quickly, mainly as heat and sometimes light.
Frequently asked questions
What is the correct answer to this question?
Because glucose is oxidised through enzyme-controlled steps, releasing energy gradually.
Why is this the correct answer?
In respiration, glucose is oxidised in many enzyme-controlled steps. Therefore, energy is released gradually rather than suddenly as heat and light, and part of it is captured in ATP. In contrast, combustion is usually a rapid oxidation process in which energy is released quickly, mainly as heat and sometimes light.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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