mollymalone98
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GCSE (Biology) Science Test sobre Respiration, creado por mollymalone98 el 22/12/2013.

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mollymalone98
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Respiration

Pregunta 1 de 10

1

Respiration releases energy...

Selecciona una o más de las siguientes respuestas posibles:

  • because it's fun

  • to build up larger molecules (proteins) from smaller molecules (amino acids)

  • to allow muscles to contract in animals

  • so animals can maintain a constant body temperature

  • so plants can build sugars, nitrates and other nutrients into amino acids where they are then built into proteins

  • so we can breathe

Explicación

Pregunta 2 de 10

1

When doing physical activity, your breathing rate increases and you breathe more deeply for maximum oxygen intake to be supplied to your muscles

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 3 de 10

1

Your heart pumps faster during excercise so more blood and thus oxygen can be pumped to your muscles

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 4 de 10

1

Glycogen..

Selecciona una o más de las siguientes respuestas posibles:

  • some glucose is stored from food as glycogen

  • glucose breaks down into glycogen

  • glycogen is mainly stored in the liver

  • muscles have their own store

  • muscles use glucose vigorously during exercise so some of the glucose stored as glycogen is reconverted back into glucose for respiration

  • glycogen combines with oxygen in respiration

Explicación

Pregunta 5 de 10

1

Anaerobic respiration happens only when your asleep

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 6 de 10

1

Anaerobic respiration is the incomplete breakdown of glucose due to insufficient oxygen supply to your muscles, with the equation..

Selecciona una de las siguientes respuestas posibles:

  • glucose -> lactic acid (+ a little energy)

  • glucose -> oxygen + lactic acid (+ a little energy)

  • glucose -> carbon dioxide + lactic acid (+ a little energy)

  • glucose -> lactic acid (+ a lot of energy)

Explicación

Pregunta 7 de 10

1

"Oxygen debt" is when...

Selecciona una de las siguientes respuestas posibles:

  • 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

  • you don't have any oxygen in your bloodstream

  • when you're suffocating

  • when you have such little oxygen in your muscles that they cannot work any longer

Explicación

Pregunta 8 de 10

1

lactic acid is removed by..

Selecciona una de las siguientes respuestas posibles:

  • oxidising it to harmless CO2 and water

  • passing it out through the blood stream

  • breathing it out

  • waiting until your heartrate is normal

Explicación

Pregunta 9 de 10

1

While high levels of CO2 and lactic acid are detected in the blood, your breathing and heart rate stay high to rectify the situation

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 10 de 10

1

mitochondria help make proteins by

Selecciona una de las siguientes respuestas posibles:

  • provided the energy required for protein synthesis

  • where protein synthesis takes place

Explicación

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