BSCI 207 Lecture Notes - Lecture 5: Cellular Respiration, Photoheterotroph, Chemotroph

• School: University of Maryland
• Department: Biological Sciences Program
• Course: BSCI 207
• Professor: Leo Shapiro

Document Summary

Bsci207 - lecture 5 - thermodynamics of life. Nearly all energy of life comes from the sun. Co2 is reduced and incorporated into organic molecules. Photosynthetic organisms are consumed by non-photosynthetic organisms. Need energy to fuel growth and reproduction. Extract available energy and convert it to a usable form, atp (mainly) Energy gets stored as atp and energy is released when atp is broken down. Organisms give off leftover energy as heat. Organic compounds = energy and carbon source. Share energy currency of atp and reduced enzymes (nadh) Glucose/c6h12o6 + 6o2 6co2 + 6h20 + chemical energy. 6co2 + 6h20 c6h12o6 + 6o2. Fossil fuels have been stored in earth from millions of years, but humans are releasing those fossil fuels in such a short amount of time/too quickly. Humans are interrupting the carbon cycle by releasing massive amounts of carbon dioxide into the atmosphere by burning fossil fuels.