HCC Biology 1306 Final Exam Review: Biology 1306 Final Exam Review: Updated Solution

What is the 1st Law of Thermodynamics? (Ans- The first law, also known as the Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. What is the 2nd Law of Thermodynamics (Ans- The second law of thermodynamics states that the entropy of any isolated system always increases. Know dehydration synthesis, a condensation reaction. (Ans- look at chart Thermodynamics vs. Kinetics; what is the difference? (Ans- Kinetic - how unwillingly something reacts. Thermodynamic - the energies involved, amount of gradient. For example, aluminum metal is kinetically much more stable than iron metal in damp air (it doesn't rust), but thermodynamically much less stable (if it did oxidize, it would give out more energy) Understand Photosynthesis. C3, C4, CAM. (Ans- 6CO2 + 6H2O + Energy (in) ---> C6H12O6 + 6O2 C3 and C4 indicate the number of carbon atoms in the sugar molecules produced by photosynthesis. CAM is Crassulacean acid metabolism in which carbon dioxide CO2 is fixed at night. Generally, C3 plants are suited to cool, moist conditions, C4 to hot and dry, and CAM to arid conditions.