452054
Descripción
Test por mollymalone98, actualizado hace más de 1 año
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Creado por mollymalone98
hace más de 10 años
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Pregunta 1
Pregunta
Respiration releases energy...
Respuesta
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because it's fun
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to build up larger molecules (proteins) from smaller molecules (amino acids)
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to allow muscles to contract in animals
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so animals can maintain a constant body temperature
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so plants can build sugars, nitrates and other nutrients into amino acids where they are then built into proteins
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so we can breathe
Pregunta 2
Pregunta
When doing physical activity, your breathing rate increases and you breathe more deeply for maximum oxygen intake to be supplied to your muscles
Respuesta
- True
- False
Pregunta 3
Pregunta
Your heart pumps faster during excercise so more blood and thus oxygen can be pumped to your muscles
Respuesta
- True
- False
Pregunta 4
Pregunta
Glycogen..
Respuesta
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some glucose is stored from food as glycogen
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glucose breaks down into glycogen
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glycogen is mainly stored in the liver
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muscles have their own store
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muscles use glucose vigorously during exercise so some of the glucose stored as glycogen is reconverted back into glucose for respiration
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glycogen combines with oxygen in respiration
Pregunta 5
Pregunta
Anaerobic respiration happens only when your asleep
Respuesta
- True
- False
Pregunta 6
Pregunta
Anaerobic respiration is the incomplete breakdown of glucose due to insufficient oxygen supply to your muscles, with the equation..
Respuesta
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glucose -> lactic acid (+ a little energy)
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glucose -> oxygen + lactic acid (+ a little energy)
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glucose -> carbon dioxide + lactic acid (+ a little energy)
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glucose -> lactic acid (+ a lot of energy)
Pregunta 7
Pregunta
"Oxygen debt" is when...
Respuesta
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you have to "repay" the oxygen that you didn't get to your muscles during exercise because your lungs couldn't keep up with the demand
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you don't have any oxygen in your bloodstream
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when you're suffocating
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when you have such little oxygen in your muscles that they cannot work any longer
Pregunta 8
Pregunta
lactic acid is removed by..
Respuesta
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oxidising it to harmless CO2 and water
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passing it out through the blood stream
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breathing it out
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waiting until your heartrate is normal
Pregunta 9
Pregunta
While high levels of CO2 and lactic acid are detected in the blood, your breathing and heart rate stay high to rectify the situation
Respuesta
- True
- False
Pregunta 10
Pregunta
mitochondria help make proteins by
Respuesta
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provided the energy required for protein synthesis
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where protein synthesis takes place
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