Question
In the human body,muscle cells have an increased need for energy during exercise. To help supply this energy, the body will immediately increase - F the need for waste products to be retained G available for respiration food intake to increase the substances H intake of carbon dioxide activity in the nervous system to stimulate (H) the breathing rate to supply more oxygen to
Answer
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Kevin
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Answer
The correct response is related to the respiratory system's immediate reaction to exercising muscles' increased demand for energy.
Explanation
## Step 1Muscle cells require more energy during exercise to function effectively. This is due to the increased muscle activity that demands more ATP (adenosine triphosphate), which is the cell's energy currency.## Step 2Aerobic respiration within the cells uses glucose and oxygen to produce the necessary ATP. This process is essential for providing the energy needed for exercise.## Step 3To supply the oxygen needed for this elevated energy production, the body reacts by speeding up the rate of breathing. This is a direct response to the increased demand for oxygen by the muscle cells.## Step 4An increased breathing rate delivers more oxygen to the bloodstream. This oxygen is then transported to the muscles to aid in the production of ATP.## Step 5The cardiovascular system also plays a role, as the heart rate increases to pump more oxygenated blood to the exercising muscles.## Step 6Waste retention (option F) is not a direct or immediate response to an increased need for energy. Food intake (option G) would not provide an immediate effect during exercise since digestion and absorption are slower processes. Increased activity in the nervous system (option H) is too vague a statement without specifying that the nervous system activities that will increase are signalling the respiratory and circulatory systems to deliver more oxygen to the muscles, not to stimulate intake of carbon dioxide.