B1.3.2 Flashcards

1
Q

Where does energy come from

A

It comes from the chemical stores in the food you eat.

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2
Q

How is the energy transferred

A

The energy is transferred from the food when glucose reacts with oxygen in a series of chemical reactions called aerobic respiration.

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3
Q

How is the oxygen carried

A

The oxygen is carried in the blood stream to the cells that need them for respiration

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4
Q

Respiration word and chemical equation

A

glucose + oxygen —> carbon dioxide + water
C6H12O6 + 6O2 —-> 6CO2 + 6H2O

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5
Q

What does respiration do

A

Respiration transfers energy from chemical stores in glucose to another chemical store for all processes in the cell.

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6
Q

What is the energy store called

A

The energy store is called ATP

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7
Q

What is ATP used for

A

To synthesise larger molecules from smaller ones to make new cell materials.
For movement
To stay warm

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8
Q

Where does respiration take place in the cell

A

Respiration takes place inside the mitochondria of a cell. Each chemical reaction that takes place during respiration is controlled by a specific enzyme.

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9
Q

What does the number of mitochondria in a cell show

A

The number of mitochondria in a cell tells you how active a cell in. Muscle cells have lots of mitochondria as they need to transfer lots of energy.

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10
Q

Is respiration endothermic or exothermic

A

It’s exothermic

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