Q.Give the significance of respiration.
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Start your 14-day free trial to unlock the full solution →Respiration oxidises food to release the chemical energy (as ATP) that powers all cellular activities — growth, movement, synthesis, transport — and is therefore essential for maintaining life processes.
Respiration is significant because it is the cell's universal source of usable energy (ATP).
Cellular respiration breaks down complex organic food molecules (mainly glucose) step by step, releasing the chemical energy locked in their bonds and trapping a large part of it in a readily usable form, ATP. This ATP powers virtually every energy-requiring activity of the cell and organism — muscle contraction and movement, active transport across membranes, biosynthesis of macromolecules (proteins, nucleic acids, lipids), nerve impulse conduction, growth, and repair. Respiration also produces several metabolic intermediates tha …
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