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Which of the following statements about metabolism are true? 1) Catabolism is the process in which...

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Biology

Which of the following statements about metabolism are true?

1) Catabolism is the process in which complex substances arebroken down, yielding a net output of energy.
2) Metabolism is an integrated system in which many of the samereactions participate in degradative (catabolic) and biosynthetic(anabolic) pathways.
3) Anabolism involves the synthesis of polymeric biomolecules andcomplex lipids from monomers such as fatty acids andnucleotides.
4) All organisms require an external source of energy, such asglucose or sunlight, for metabolic energy.

Answer & Explanation Solved by verified expert
4.3 Ratings (593 Votes)
The following statements are true1 Catabolism is the process in which complex substances arebroken down yielding a net output of energyExplanation Catabolism is the set of biochemical reactionsthat break down complex molecules into simpler ones Catabolicprocesses are thermodynamically favorable and spontaneous so cellsuse them to generate energy or to file anabolism Catabolism isexergonic meaning it releases heat and works via hydrolysis andoxidation Cells can store useful raw materials in complexmolecules use catabolism to break them down and recover thesmaller molecules to build new products For example    See Answer
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