BIO1022 Lecture Notes - Lecture 9: Metabolic Pathway, Mitochondrial Matrix, Homeostasis

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Enzymes & substrates: speed up reactions that might not be able to take place in the first place due to certain conditions (example : temperature) If (cid:449)e (cid:449)a(cid:374)t to go (cid:271)a(cid:272)k fro(cid:373) e to a, (cid:449)e do(cid:374)"t take the sa(cid:373)e path(cid:449)ay (cid:271)e(cid:272)ause (cid:449)e want to be able to regulate what happens next. Hence it takes e f g h . Isozymes & allozymes: slightly different forms of an enzyme, may come from different genes / allele, different levels of activity and regulation. 3: end goal : maintain homeostasis, steady state / maintains body function when there are small fluctuations, returns to normality after disturbance, negative and positive feedback. In the following metabolic pathway, which enzyme is most likely to have an allosteric binding site for e: enzyme 1, enzyme 2, enzyme 3, enzyme 4. A b c d e (1 is between a and b, and so on)