LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cells obtain energy from glucose
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cells obtain glucose from water
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cells obtain energy from the sun
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Detailed explanation-1: -During glycolysis, a glucose molecule with six carbon atoms is converted into two molecules of pyruvate, each of which contains three carbon atoms. For each molecule of glucose, two molecules of ATP are hydrolyzed to provide energy to drive the early steps, but four molecules of ATP are produced in the later steps.
Detailed explanation-2: -During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Detailed explanation-3: -Cellular respiration is a metabolic pathway that uses glucose to produce adenosine triphosphate (ATP), an organic compound the body can use for energy. One molecule of glucose can produce a net of 30-32 ATP.
Detailed explanation-4: -Some amount of energy released during respiration is lost in the form of heat while the rest is converted into ATPs and stored in the cells, which are later utilised to carry out all the life processes like photosynthesis, growth and reproduction, etc.