SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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just to make molecules such as proteins for growth and repair
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to sweat so we can lose heat when we get too hot
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just for muscle contraction to allow us to move
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for muscle contraction, growth and heat
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Detailed explanation-1: -Within two minutes of exercise, the body starts to supply working muscles with oxygen. When oxygen is present, aerobic respiration can take place to break down the glucose for ATP. This glucose can come from several places: remaining glucose supply in the muscle cells.
Detailed explanation-2: -Cellular respiration provides ATP during muscle contraction in A-Level Biology by breaking down glucose and other organic molecules to release energy. This energy is then used to produce ATP, which can be used to power muscle contractions.
Detailed explanation-3: -The energy required for muscle contraction is provided by the breakdown of ATP but the amount of ATP in muscles cells is sufficient to power only a short duration of contraction.
Detailed explanation-4: -Energy for Muscles Muscles use ATP from aerobic respiration to contract. However, depending on muscle type (below), anaerobic respiration may be carried out to provide energy very quickly.
Detailed explanation-5: -Muscle needs energy to contract and as stated previously the ‘universal energy currency’ of living systems is ATP (adenosine triphosphate). This is largely produced within mitochondria, organelles which are often referred to as the ‘powerhouse’ of the cell.