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PCB 3703H Fall 2007 Exam 1. If you have questions-ask. Please check the screen f

ID: 3519564 • Letter: P

Question

PCB 3703H Fall 2007 Exam 1. If you have questions-ask. Please check the screen for clarifications before you leave. Raspberry scantron Please provide name and PID on the scantron 1. Trae of enzymes a chemically changed by reactions they catalyze c. generally proteins e. increase activation energy of reactions decrease rates of chemical reactions inactivate allosteric inhibitors The induced fit model of enzyme activity involves changes in the conformation of the enzyme c. products none of the above 3. Can alter conformation (ertiary structure) of an enzyme a allosteric inhibitors b. d. Removal of a phosphate group by a protein kinase can result in activation or deactivation of a protein. b. Not characteristic of end product inhibition temperature all of the above 4. false also called sabstrate inhibition end product binds to enryme active site invelves allosteric inhibition results in enzyme deactivation S. c. form of negative feedback 6 May transport hydrogen atoms to the active site of enzymes all of the above .a and b 7. Gluconcogenesis refers to the production of from a glycogen, glucose b. glucose, glycogen c. glucose, lactic acid d. lactic acid, glucose . Typically stores glucose as glycogen brain liver skelctal muscle b. d aand b b and e 9. A IV infusion of which of the following solutions would result in a decrease in the plasma osmotic pressure (in the absence of compensatory mechanisms)? 0.1 osm 0.3 osm 0.5 osm

Explanation / Answer

True of enzyme is generally proteins

The induced fit model of enzyme activity involves changes in confirmation of the enzyme.

Can alter confirmation(tertiary structure) of an enzyme Allosteric inhibitor, cofactor, temperature.

Removal of a phosphate group by a protein kinase can result in activation or deactivation of protein:- True

May transport hydrogen atoms to the active site of the enzyme cofactor and coenzyme.

Gluconeogenesis refers to production of Glucose from lactic acid.

Typically stores Glucose as glycogen liver and skeletal muscle.