PRELIMINARY CONTEST 2024
ROUND 1
FIRST SET OF QUESTIONS
PREAMBLE
Indicate whether the given process is anabolic, catabolic, or amphibolic:
1. Glycolysis
ANSWER: Catabolic
EXPLANATION
Glycolysis breaks down glucose into pyruvate, releasing energy in the form of ATP, making it a catabolic pathway.
2. Krebs Cycle or Tri-Carboxylic Acid Cycle
ANSWER: Amphibolic
EXPLANATION
The Krebs cycle is amphibolic because it participates in both energy production (catabolic) and provides intermediates for biosynthesis (anabolic).
3. Oxidative Phosphorylation
ANSWER: Catabolic
EXPLANATION
Oxidative phosphorylation generates ATP by transferring electrons from NADH and FADH2 to oxygen, releasing energy, which makes it a catabolic process.
PRACTICE QUESTIONS
1. What is an anabolic pathway?
ANSWER: One that builds larger molecules and needs energy
2. What is a catabolic pathway?
ANSWER: One that breaks down molecules and releases energy
3. What is an amphibolic pathway?
ANSWER: One that has both catabolic and anabolic roles
4. Is glycolysis anabolic, catabolic or amphibolic?
ANSWER: Catabolic
5. Is the Krebs cycle anabolic, catabolic or amphibolic?
ANSWER: Amphibolic
6. Is oxidative phosphorylation anabolic, catabolic or amphibolic?
ANSWER: Catabolic
7. Is photosynthesis anabolic, catabolic or amphibolic?
ANSWER: Anabolic
8. Is protein synthesis anabolic, catabolic or amphibolic?
ANSWER: Anabolic
9. Is glycogen breakdown anabolic, catabolic or amphibolic?
ANSWER: Catabolic
10. Is gluconeogenesis anabolic, catabolic or amphibolic?
ANSWER: Anabolic
11. Is the pentose phosphate pathway anabolic, catabolic or amphibolic?
ANSWER: Amphibolic
12. Is fatty acid beta-oxidation anabolic, catabolic or amphibolic?
ANSWER: Catabolic