Unformatted text preview: 29. Which of the following statements about the regulation of enzyme activity is (are) TRUE? ~ ,r a) "a competitive inhibitor binds at the active site of the enzyme «1' b) an allosteric enzyme exhibits a sigmoidal rate of enzyme activity as- a function of substrate concentration -r c) a noncompetitive inhibitor binds to a site away from the active site d) both a and c are correct
all of the above are correct Dd! ~91 k“ k 7
30.. Oxidation: %
‘r a) is the loss of one or more electrons V . . ,9 m ’k
b) is usually an exergonic process \/ NM) H * H 5» D
4' c occurs when a molecule loses hydrogen atoms g
, (. ( "
H, noth 'a and c are correct A’ 5‘ (MW 31; Which of the following statements about NAD+ is (are) TRUE? ' 1s a reducing agent _ _ V
@ er'Ves as a coenzyme " .7 - - [\
” is present in mitochondria but not in cytoplasm ‘ d) both a and c are __correCt e“)— aﬂ‘of the ab‘oVe are correct 32 Which statement about glycgjysis is FALSE?
.1 results in the oxidation of glucose \/
‘~ jequires oxygen 7(
,Vc’ occurs in the cyt yplasm/
K d) generates ATP
4 e) leads to formation of pyruvate ./ l 33. Which statement(s) about the Krebs cycle is (are)TRUE? ..
Ira) produces C02 / 4' b) occurs in the mitochondrial mauix / ,V-c) produces GTP */
d both a and c are correct
Wall of the above are correct _ 7/ ...
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- Summer '09