Multiple Choice
Which of the following best describes the field of biochemistry?
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1. Introduction to Biochemistry
What is Biochemistry?
Multiple Choice
In biochemistry, metabolism can be defined as the ________.
A
conversion of light energy into chemical energy in chloroplasts
B
movement of water across a semipermeable membrane down its concentration gradient
C
process by which DNA is copied to produce identical daughter molecules during cell division
D
sum of all chemical reactions occurring in a cell or organism, including both anabolic and catabolic pathways
Verified step by step guidance1
Understand that metabolism refers to the entire set of chemical reactions that occur within a living cell or organism.
Recognize that metabolism includes two main types of pathways: anabolic pathways (which build complex molecules from simpler ones) and catabolic pathways (which break down complex molecules into simpler ones).
Note that metabolism is not limited to a single process like photosynthesis, osmosis, or DNA replication, but encompasses all chemical transformations that sustain life.
Recall the definition: metabolism is the sum of all chemical reactions occurring in a cell or organism, integrating both energy-producing and energy-consuming processes.
Therefore, the correct description of metabolism is the comprehensive network of chemical reactions that maintain cellular and organismal function.
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