BIO-0007 Lecture Notes - Lecture 4: Main Source, Anaerobic Respiration, Kinetic Energy
13 Sep 2016
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Systems must use energy to maintain order against the constant tendency towards disorder. Thermoregulation: ability of an organism to manage its own body temperature o. I. e. humans: baby, child, adult all look similar. Plants and animals must store energy: humans store it in fat cells o. In the fall, they lose their leaves b/c they"re cutting off the supply of chlorophyll to save energy. Different methods of storage: hibernation, aestivation (during summer droughts, dormancy. Loss of body part functions due to age: makes survival/reproduction less likely. Definition: allocation of energy to produce & care for offspring. Small amount of energy used on eggs is involved. Plants: main source of protection is chemicals. Break down proteins: makes some things easier to digest. Led to evolution of human jaw; shape changed to be able to eat different foods. Get their energy from consumption of forms into organic carbon. Eroi = (energy obtained) divided by (energy used to obtain energy)
