If you are a meat eater, you are less likely to suffer from zinc deficiency as meats are one of the best foods rich in zinc. The meats that have the highest concentration of zinc include beef, lamb, pork, chicken and turkey. A 100 gram serving of cooked lean beef contains 12.3 mg or 82% DV of zinc.
Endothermic reactions absorb energy from the surroundings, while exothermic reactions release energy to the surroundings. Fuels release energy when they burn. The energy output of a fuel can be measured by calorimetry using a known mass of water.
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 ...