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GCSE Biology > B8 - Respiration > Flashcards

B8 - Respiration Flashcards

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1
Q

What are the products of aerobic respiration?

A

Carbon Dioxide and Water

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2
Q

What are the reactants of aerobic respiration?

A

Glucose and Oxygen

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3
Q

How are muscle cells adapted for higher levels of aerobic respiration?

A

Greater number of mitochondria

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4
Q

Why does your heart rate increases during exercise?

A

Increase the flow of oxygenated blood to the exercising muscles.

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5
Q

What is the main purpose of respiration?

A

Release energy from glucose

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6
Q

How does the oxygen used for respiration enter our cells?

A

Diffused into the bloodstream and carried by haemoglobin

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7
Q

What type of reaction is aerobic respiration?

A

Exothermic

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8
Q

In which cell organelle does aerobic respiration take place?

A

Mitochondrion

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9
Q

What do our bodies need energy for?

A

Muscle contractions, growth and cell division

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10
Q

Why might aerobic respiration stop at very high temperatures?

A

Enzymes which control aerobic respiration become denatured.

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11
Q

Which produces more energy, Aerobic or Anaerobic respiration?

A

Aerobic

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12
Q

True or False: Lactic acid can cause cramp

A

True

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13
Q

What acid does Anaerobic respiration produce?

A

Lactic

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14
Q

Where does anaerobic respiration take place?

A

Cytoplasm

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15
Q

What does anaerobic mean?

A

Without oxygen

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16
Q

Equation of fermentation (anaerobic respiration by plant cells)

A

Glucose -> CO2 + Ethanol

17
Q

Explain why anaerobic respiration is less efficient than aerobic respiration

A

The glucose is not completely broken down, so less energy is released by the process.

18
Q

Why does breathing stay high after intense exercise?

A

To break down the lactic acid that has been produced

19
Q

Explain how breathing rate is linked to fitness

A

Fit people have lower resting breathing rates that do not increase as much during exercise

20
Q

Describe the effect of anaerobic respiration on cells

A

Production of lactic acid lowers the pH of the cell

GCSE Biology (14 decks)

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