alleryStart learning →Respiration, in which glucose combines with oxygen to release energy, is best described as a(n)
Aendothermic reaction
Bexothermic reaction
Cphotolytic reaction
Ddisplacement reaction
Answer & Solution
Correct answer: B. exothermic reaction
1. Respiration breaks down glucose using oxygen and gives out energy.
2. Since energy is released, it is an **exothermic** reaction.
3. This energy powers all life processes.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch1 'Chemical Reactions and Equations', §1.2_
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