biochemistry_midterm_exam

biochemistry_midterm_exam - :hdi1 . SGLT1 functions as .a )...

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hdi1 . SGLT1 functions as : a ) A glucose and galactose transporter . B ) A glucose catalyst . C ) A glucose and galactose analogue D ) A glucose and fructose receptors E ) A glucose and galactose source 2 . All these are true about glycogenolysis EXCEPT : A ) Active during Insulin deficiency B ) Stimulated by Glucagon and Epinephrine C ) Glucose is the final end product both in liver and muscle D ) Phosphorylase enzyme becomes more active when phsphorylated E ) It is active during fasting 3 . For glycogenesis Glycogen synthase requires one of the following substrate : A ) Glucose . B ) glucose -1-phosphate C ) glucose-6-phosphate D ) UDP-Glucose E ) GDP-Glucose 4 . The end-product of debranching & Phosphorylase in the muscle during glycogenolysis is mostly in the form of : A ) glucose-6-phosphate (G6P ( B ) glucose-1-phosphate ( G1P ( C ) Glucose D ) UDP-glucose E ) Glucose-1,6bisphosphate
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5 ( Epinephrine and glucagon have the following effect on glycogen metabolism in the liver : A ) The net synthesis of glycogen is increased B ) Glycogen Phosphorylase is activated while Glycogen synthesis is inactivated C ) Both Glycogen Phosphorylase and Glycogen Phosphorylase are activated D ) Glycogen Phosphorylase is inactivated while Glycogen synthase is activated E ) cAMP-dependent protein kinase is activated while Phosphorylase kinase is inactivated 6 . Phosphorylation activates one of the following enzymes : A ) Glycogen Phosphorylase B ) pyruvate kinase (PK ( C ) pyruvate dehydrogenase ( PDH ( D ) Glycogen synthase E ) Phosphofructokinase-1 ( PFK1 ( 7 All these are true about glycogenolysis EXCEPT : A ) Active during Insulin deficiency B ) Stimulated by Glucagon and Epinephrine C ) Glucose is the final end product in both liver and muscle D ) Phosphorylase enzyme becomes more active when phsphorylated E ) It is active during fasting 8 . Aerobic glycolysis occurs in one of the following : A ) RBCs B ) Retina C ) Lens
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D ) Brain E ) Adrenal medulla 9 . Glucokinase : A ) Is found in most extra hepatic tissues B ) Has low km for glucose C ) Inhibited by glucose-6 phosphate(G6P ( D ) Insulin stimulation its synthesis E ) Has high affinity to glucose 10 . Anaerobic glycolysis occurs in the following tissues' EXCEPT : A ) RBCs B ) Retina C ) Lens D ) Brain E ) Adernal medulla 11 . The Unique and major regulatory enzyme ( rate-limting enzyme ) for glycolysis is : A ) glyceraldhyde-3-phsphate dehydrogenease
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This note was uploaded on 10/25/2011 for the course ALL 101 taught by Professor All during the Spring '11 term at Cameron University.

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biochemistry_midterm_exam - :hdi1 . SGLT1 functions as .a )...

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