SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As activity increases, more oxygen is exhaled.
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As activity increases, breathing becomes more efficient.
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As activity increases, the oxygen needs of cells increase.
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As activity increases, the rate of the heart beating increases.
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Detailed explanation-1: -She counted the number of breaths per minute. Ava noted that the number of breaths increases as physical activity increases. Why is there an increase in the number of breaths per minute as activity increases? As activity increases, more oxygen is exhaled.
Detailed explanation-2: -Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body’s cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Detailed explanation-3: -Lactic Acid Buildup Causes Muscle Fatigue and Soreness. Anyone who has pushed themselves through an intense workout will be familiar with “feeling the burn”-that sensation of fatigue and pain that sets in when you subject your muscles to lifting heavy loads repeatedly or sprinting all-out.
Detailed explanation-4: -It’s best to take your respiratory rate while sitting up in a chair or in bed. Measure your breathing rate by counting the number of times your chest or abdomen rises over the course of one minute. Record this number.
Detailed explanation-5: -So glucose and oxygen are the product of photosynthesis which is used in cellular respiration.