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Multiple Choice
Which of the following statements about metabolism is FALSE?
A
Metabolism only occurs in animal cells and not in plant cells.
B
Catabolic pathways release energy by breaking down complex molecules.
C
Anabolic pathways consume energy to build complex molecules from simpler ones.
D
Metabolism includes both anabolic and catabolic pathways.
Verified step by step guidance
1
Understand the definition of metabolism: Metabolism refers to all chemical reactions that occur within a living organism to maintain life. It includes both anabolic (building up) and catabolic (breaking down) pathways.
Review the characteristics of catabolic pathways: Catabolic pathways release energy by breaking down complex molecules into simpler ones, such as the breakdown of glucose during cellular respiration.
Review the characteristics of anabolic pathways: Anabolic pathways consume energy to synthesize complex molecules from simpler ones, such as the synthesis of proteins from amino acids.
Evaluate the statement 'Metabolism only occurs in animal cells and not in plant cells': This statement is false because metabolism occurs in all living cells, including both animal and plant cells. For example, plants perform photosynthesis (an anabolic process) and cellular respiration (a catabolic process).
Conclude that the false statement is the one claiming metabolism only occurs in animal cells, as metabolism is a universal process in all living organisms, including plants, animals, fungi, and microorganisms.