Respiration, Energy and Metabolism

What are some of the processes organisms use energy for?

• Growth, Repair and Movement

• Movement, Growth, Decay

• Repair, Decay, Growth

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Where does the Energy needed for living processes come from?

• Photosynthesis

• Protein Synthesis

• DNA Replication

• Respiration

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Why does anaerobic respiration takes place in muscles during exercise?

• Because the Liver and Brain cannot supply oxygen to the muscles cells quickly enough.

• Because the Lungs and Heart cannot supply oxygen to the muscles cells quickly enough.

• Because the Liver and Heart cannot supply oxygen to the muscles cells quickly enough.

• Because the Kidneys and Bladder cannot supply oxygen to the muscles cells quickly enough.

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Why do muscles become fatigued (tired) during long periods of vigorous activity?

• Citric acid builds up in the muscles from anaerobic respiration.

• Lactic acid builds up in the muscles from anaerobic respiration.

• Hydrochloric acid builds up in the muscles from anaerobic respiration.

• Lactic acid builds up in the muscles from aerobic respiration.

What is oxygen debt ?

• A temporary carbon dioxide shortage in the body tissues arising from exercise.

• A permanent oxygen shortage in the body tissues arising from exercise.

• A temporary nitrogen shortage in the body tissues arising from exercise.

• A temporary oxygen shortage in the body tissues arising from exercise.

When your body repays it's oxygen debt what is lactic acid broken down into?

• Oxygen and Water

• Carbon dioxide and Water

• Glucose and Water

• Carbon dioxide and Oxygen

Which organ removes lactic acid from the blood

• Kidneys

• Lungs

• Liver

• Bladder

What is Metabolism?

• All the chemical reactions involved in maintaining the living state of an organism and it's cells.

• The food we eat

• Chemical reactions in plants

• Chemical reactions in animals

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The energy transferred by respiration in cells is used by the organism for the processes of metabolism. What molecules speed up these reactions?

• Hormones

• Antibodies

• Antigens

• Enzymes