Textbook Notes (270,000)
CA (160,000)
SFU (5,000)
BPK (400)
BPK 110 (60)
Chapter 7

BPK 110 Chapter Notes - Chapter 7: Acetyl-Coa, Citric Acid Cycle, Pyruvic Acid


Department
Biomedical Physio & Kines
Course Code
BPK 110
Professor
Leah Esplen
Chapter
7

This preview shows page 1. to view the full 4 pages of the document.
KIN 110 CHAPTER 7 METABOLISM
ENERGY: FUEL FOR WORK
- Metabolism: Chemical reactions needed to maintain life. Catabolism and
anabolism
o Metabolites: Any substances produced through metabolism
- Chemical Energy: Energy in the bonds of atoms
- Photosynthesis: Plants’ way of using solar energy for food
- Energy is constant, no gain or loss, only different forms: Conservation of
Energy, First Law of Thermoynamics
- Lose half of our food energy as heat in the stages:
1. Digestion, Absorption and Transport
2. Breakdown of many small molecules to a few key metabolites
3. Complete transfer of energy to a form usable by cells
WHAT IS METABOLISM
- Metabolic Pathway: Series of chemical reactions of catabolism or anabolism
o Never completely inactive
- Catabolism: Breaking down of complex substances into simpler ones
- Anabolism: Build up simple substances to complex ones
THE CELL IS THE METABOLIC PROCESSING CENTER
- Cell: Living structural units of tissues, has two parts: nucleus and cytoplasm
- Nucleus: Contains genetic information, mRNA and rRNA
- Cytoplasm: Material inside the cell: cytosol, organelles, mitochondria
o Cytosol: Fluid inside cell membrane, does glycosis and makes fatty acid
o Organelles: Membrane-bound structures with special functions
o Mitochondria: Organelle, production of ATP “power plant” of cell
- Cofactors: Compounds needed to activate an enzyme, from vitamin or mineral
o Coenzyme: Cofactor made from vitamin, mainly vitamin B
WHO ARE THE KEY ENERGY PLAYERS?
- Adenosnie Triphosphate (ATP): Main energy fuel for cellular functions
- NAD(H): Coenzyme transporter of ATP
o From vitamin B Niacin
- FAD(H2): Coenzyme transporter of ATP
o From vitamin B riboflavin
- NADPH: Coenzyme deliverer of energy for biosynthesis
- Biosynthesis: Chemical reactions which turn simple molecules into complex
biomolecules
ATP
- ATP is Adenosine-Phosphate-Phosphate-Phosphate
- Energy is stored between the bonds of Phosphates
- ATP *Break 1 Bond* ADP *Break 1 Bond* AMP
You're Reading a Preview

Unlock to view full version