SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It occurs only in plants during the day and usually involves the excahnge of gases.
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It occurs only in plants during the day and involves the taking in of preformed organic molecules.
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It occurs continuously in the cells of all organisms and involves the synthesis of carbohydrates.
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It occurs continuously in the cells of all organisms and often involves an exchange of gases.
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Detailed explanation-1: -The correct answer is (3) It occurs continuously in the cells of all organisms and involves the synthesis of carbohydrate molecules. The process of respiration is carried out by all living cells. This is how cells obtain the energy they need in order to perform their life functions.
Detailed explanation-2: -Answer and Explanation: Cellular respiration is best described as E) changing of stored chemical energy in food molecules to a form usable by organisms.
Detailed explanation-3: -Photosynthesis converts light energy into chemical energy, but cellular respiration converts light energy into heat energy.
Detailed explanation-4: -The correct answer is D. The energy from the sun enters the ecosystem when green plants, green algae, and phytoplankton conduct photosynthesis. Photosynthesis is a process that uses light energy in order to convert carbon dioxide and water into glucose and oxygen.
Detailed explanation-5: -The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.