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Bio 219 – Questions With Complete Solutions (100%)
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Bio 219 – Questions With Complete Solutions (100%)
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Bio 219 – Questions With Complete Solutions (100%)What is an anabolic reaction? Right Ans - reaction in which larger
molecules are made from smaller molecules; requires energy to build new
bonds
What is a catabolic reaction? Right Ans - a reaction in which a larger
molecule breaks down into smaller molecules
What is an exergonic reaction? Right Ans - reactions that realize energy
What is an endergonic reaction? Right Ans - reactions that require energy
What type of reaction is protein synthesis? Right Ans - anabolic reaction
what type of reaction is the conversion go glycogen to glucose? Right Ans -
Catabolic reaction
what type of reaction is the oxidation of glucose (cellular respiration)?
Right Ans - exergonic reaction
what type of reaction is the formation of ATP from ADP? Right Ans -
endergonic reaction?
what are the 3 major classes of metabolic reactions? Right Ans -
1.)dehydration/hydrolysis
2.)phosphorylation/dephosphorylation
3. ) oxidation-reaction
dehydration reaction and example Right Ans - anabolic reaction that
removes h2o to join monomers
example: peptide bond formation : amino acid1 + amino acid2
-> dipeptide + h2o
hydrolysis reaction and example Right Ans - catabolic reaction that adds
h2o to break between monomers
example: sucrose + h2o -> glucose + fructose
, phosphorylation reaction and example Right Ans - reaction that adds a
phosphate group
example: atp synthesis ADP + Pi -> ATP + h2o
dephosphorylation reaction and example Right Ans - reaction that removes
a phosphate group
example: ATP hydrolysis ATP + h2o -> ADP +Pi
Kinase enzyme and example Right Ans - Catalyzes transfer of phosphate
groups from ATP
example- glucose (molecule) + ATP -> glucose-phosphate + ADP
Oxidation-reduction reaction Right Ans - -major energy source for cells
(oxidation of glucose, fatty acids and amino acids)
-Usually transfer hydrogen ATOMS (not ions)
-when one molecule is oxidized the other is reduced
Oxidation-reduction (redox) example Right Ans - pyruvate + NADH+ H ->
lactate + NAD+
pyruvate is reduced to form lactate (gains electrons) NADH is oxidized to
NAD+ (loses electrons)
coenzymes Right Ans - carriers of hydrogen atoms and their electrons in
pairs
properties and functions of enzymes Right Ans - Biochemical catalysts that
speed up chemical reactions
-most enzymes are proteins
-enzymes increase reaction rate by lowering the activation energy of the
reaction OR by providing an alternate chemical pathway for the reaction
How is enzyme function related to the three-dimensional structure of the
enzyme protein Right Ans - a complementary fit between substrate and
active site. shape, charge, polarity
What is the active site of an enzyme Right Ans - the part of an enzyme to
which substrates bind and where a reaction is catalyzed
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