Multiple Choice
Organisms are described as thermodynamically open systems. Which of the following statements is consistent with this description?
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7. Energy and Metabolism
Introduction to Energy
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What is the primary biomolecule that cells use for energy?
A
Cholesterol
B
DNA (Deoxyribonucleic Acid)
C
RNA (Ribonucleic Acid)
D
ATP (Adenosine Triphosphate)
Verified step by step guidance1
Identify the primary function of each biomolecule listed in the options: Cholesterol, DNA, RNA, and ATP.
Understand that Cholesterol is a type of lipid that is important for cell membrane structure and hormone synthesis, not primarily for energy.
Recognize that DNA (Deoxyribonucleic Acid) is the molecule that stores genetic information in cells, not used directly for energy.
Acknowledge that RNA (Ribonucleic Acid) is involved in protein synthesis and gene expression, but not primarily used for energy.
Learn that ATP (Adenosine Triphosphate) is the main energy currency of the cell, providing energy for various cellular processes.
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