CELLS 7.1 Cellular Respiration- Pre AP Biology Study Notes - New Syllabus.
CELLS 7.1 Cellular Respiration- Pre AP Biology Study Notes
CELLS 7.1 Cellular Respiration- Pre AP Biology Study Notes – New Syllabus.
LEARNING OBJECTIVE
CELLS 7.1(a) Explain why the cellular energy processes in producers and consumers are dependent on one another.
CELLS 7.1(b) Create and/or use models to explain how consumers obtain usable energy from the products of photosynthesis.
CELLS 7.1(c) Describe how consumers store the energy acquired through cellular respiration.
Key Concepts:
- CELLS 7.1.1 Cellular respiration is a series of enzymatic reactions that utilize electron carrier molecules to synthesize ATP molecules.
a. Transfer of energy through cellular respiration begins with the carbon compounds generated by producers during photosynthesis.
b. Glycolysis, an anaerobic process that occurs in the cytoplasm, uses glucose and two molecules of ATP to produce NADH, pyruvic acid, and four molecules of ATP.
c. The Krebs cycle, an aerobic process that occurs in the mitochondria, uses pyruvic acid to produce ATP and electron carriers called NADH and FADH₂. Carbon dioxide is produced as a waste product during these chemical reactions.
d. The electron transport chain transfers the high-energy electrons from NADH and FADH₂ to oxygen, producing H₂O.
e. The build-up of hydrogen ions in the inner mitochondrial space produces a gradient that allows the production of 36–38 ATP molecules from each glucose molecule.