Metabolism Flashcards
homeostasis
metabolic condition resulting from dynamic processes to maintain a constant internal environment despite a changing external environment
negative feedback
acts to resist deviation, product inhibits reaction that produces it
Anabolic reactions
require energy to form bonds
Catabolic reactions
release energy by breaking bonds
Glucogenic amino acids
can be used to make glucose (a.a.–>pyruvate–>glucose)
ketogenic amino acids
can be converted to acetyl-CoA (a.a.–>acetyl-CoA–>f.a.)
Fed state
after eating
What happens when you overeat?
CHO–>glucose–>glycogen/fat stores
fat–>f.a.–>body fat
PRO–>a.a.–>urine N loss, fat stores
What happens during a short term fast?
glycogen stores–>glucose–>energy
body fat stores–>f.a.–>energy
What happens during long term fast?
body PRO–>a.a.–>glucose/N loss/ketones–>energy
body fat–>f.a.–>–>ketones–>energy
How are ketones formed?
condensation of two acetyl-CoA and removal of CoA
what transformations can happen to ketones?
losing a CO2, adding 2H+, keeps them as ketones just different types
