Respiration as an Exothermic Reaction Flashcards

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In biology, what is meant by respiration?

Respiration is a chemical process in cells that releases energy from glucose.

What does it mean when we say respiration is an exothermic reaction?

It means respiration releases energy to the surroundings, mainly as heat.

In which part of the cell does most respiration take place?

Most respiration happens in tiny structures in the cytoplasm called mitochondria.

Does respiration happen only during exercise or all the time?

Respiration happens all the time in living cells, even when you are resting or asleep.

Why do living cells need the energy released by respiration?

They need it for things like muscle contraction, keeping warm and building larger molecules.

How does respiration help mammals and birds keep a constant body temperature?

The heat released during respiration warms the body and helps keep body temperature steady.

Are both aerobic and anaerobic respiration exothermic?

Yes. Both are exothermic because both release energy, but aerobic respiration releases more energy per glucose molecule.

How is respiration different from breathing?

Respiration is a chemical reaction in cells that releases energy, while breathing is moving air into and out of the lungs.