34 DUTY TO WARN it is really a Type B special relationship based on a profes-sional's general obligation to the community he serves.
Endothermic reactions: Heat is absorbed. 1) Photosynthesis: Plants absorb heat energy from sunlight to convert carbon dioxide and water into glucose and oxygen. 2) Cooking an egg: Heat energy is absorbed from the pan to cook the egg. Exothermic reactions: Heat is released.
The fact is that you could not live except for a huge number of both exothermic and endothermic reactions. Thinking and reading this both involve reactions such as ATP hydrolysis and alkene isomerization. Glycolysis, the TCA cycle, electron transport and phosphorylation capture energy through a succession of endothermic and exothermic reactions. Energy is saved for future use by turning it into fat which is ultimately an endothermic process coupled to other exothermic processes. Even emotions must ultimately be chemical process even though they probably involve electrical processes as well. However, the electrical processes are made possible by chemical reactions. As you study any aspect of biology, keep in mind that it all depends on chemical reactions and essentially all chemical reactions are either exothermic or ...