Which of the following reactions or pathways is catabolic?
A. Converting glucose to carbon dioxide and water (cellular respiration)
B. Making starch from many glucose monomers
C. Photosynthesis, which builds glucose from carbon dioxide using energy from light
D. Making ATP from ADP and phosphate
Cells have two basic types of metabolic reactions, anabolic and catabolic. Anabolic reactions join smaller molecules to form larger, more complex molecules. Catabolic reactions do the opposite, breaking apart larger, more complex molecules into smaller, simpler molecules. Anabolic reactions require energy whereas catabolic reactions release stored energy.
Answer and Explanation:
The correct answer is A, cellular respiration. This catabolic process is summarized by the equation:
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Learn more about this topic:
from Fundamental BiologyChapter 3 / Lesson 19