Respiration and Energy Transfer in Cells Flashcards

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In biology, what is respiration?

Respiration is a series of chemical reactions in cells that release energy from glucose.

Most respiration takes place in tiny parts of the cell called mitochondria.

Cells need energy to move, to make new molecules, to divide, and to keep warm.

Food molecules store chemical energy in the bonds between their atoms.

Respiration breaks down glucose and transfers its stored chemical energy so the cell can use it.

The small molecule that carries energy in cells is called ATP.

Respiration is exothermic. It transfers some energy to the surroundings as heat.

Energy from respiration is used to build new cells and larger body parts, so the organism can grow.

Both animals and plants respire, because all living cells need energy.

The rate of respiration increases so the muscle cell can release more energy.