NWHSU Biochem 1 - Exam 2 (Enzymes and Carbohydrates) Questions And Answers
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Course
NWHSU
Institution
NWHSU
NWHSU Biochem 1 - Exam 2 (Enzymes and
Carbohydrates) Questions And Answers
Reaction catalyzed by ADH Ethanol (substrate) - (remove 2 C-) -> Acetaldehyde
(Product)
Hyperbola What is the ADH (Vo vs [S]) plot form?
at the active site instead of the substrate A competitive inhibitor binds...
...
Proteases in the small intestine get activated by... proteolytic cleavage of C- and/or N-
terminus
, NWHSU Biochem 1 - Exam 2 (Enzymes and
Carbohydrates) Questions And Answers
3 types of reversible inhibition competitive
uncompetitive
mixed
Competitive Inhibition Inhibitor has to have similar structure to Substrate (e.g. methanol
(CH3OH) is seminal to ethanol (CH3CH2OH)
When the lines (with or without) intersect on y-axis on the LB graph, which inhibition is it?
competitive
Describe what you would see in a MM-plot of competitive inhibition. The Vmax of both
(with or without) will be the same and that the Km will increase once the inhibitor is attached.
Uncompetitive Inhibition - Inhibitor has it's own binding site (it's not the active site)
- Inhibitor can only bind to the Enzyme Substrate (ES) complex not Enzyme alone
, NWHSU Biochem 1 - Exam 2 (Enzymes and
Carbohydrates) Questions And Answers
On a LB-graoh, which inhibition is shown when both lines runs parallel to another and never
intersects? Uncompetitive Inhibition
Describe what is seen in an uncompetitive MM-plot graph? The Vmax and Km both
decrease from ES without Inhibitor to ES with Inhibitor
Mixed Inhibition - Inhibitor has it's own binding site
- Can bind to either ES or E
On a LB graph, which inhibition is shown when lines intersect in 2nd quadrant? Mixed
inhibition
Describe what is seen in a mixed MM-plot graph. The Vmax decreases and the Km
increases once the inhibitor attaches
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