Biology 1406 Blinn EXAM 3 questions
well answered to pass
metabolism - correct answer ✔✔ totality of an organisms chemical reactions
metabolic pathway - correct answer ✔✔ begins with a specific molecule and ends with a
product, each step catalyzed by a specific enzyme
catabolic pathways - correct answer ✔✔ release energy by breaking down complex molecules
into simpler compounds (exergonic)
anabolic pathways - correct answer ✔✔ consume energy to build complex molecule from
simpler ones (endergonic)
1st law of thermodynamics - correct answer ✔✔ energy can be transferred and transformed
but cannot be created or destroyed
2nd law of thermodynamics - correct answer ✔✔ every energy transfer or transformation
increases the entropy (disorder) of the universe
exergonic reaction - correct answer ✔✔ proceeds with net release of free energy and is
spontaneous (negative change in G)
endergonic reaction - correct answer ✔✔ absorbs free energy from its surrounds and is non
spontaneous; requires addition of free energy (positive change in G)
3 main kinds of work cell does - correct answer ✔✔ -chemical
, -transport
-mechanical
energy coupling - correct answer ✔✔ use of an exergonic process to drive an endergonic one;
coupled reactions are exergonic
how ATP drives endergonic reactions - correct answer ✔✔ phosphorylation (transferring a
phosphate group to some other molecule. or a phosphorylated intermediate)
ATP regenerated by - correct answer ✔✔ addition of phosphate group to ADP
ADP phosphorylated by _____ reactions in the cell - correct answer ✔✔ catabolic
activation energy - correct answer ✔✔ the initiation energy needed to start chemical reactions;
enzymes catalyze reactions by lowering this
enzymes do not affect the ______ - correct answer ✔✔ change in free energy
substrate - correct answer ✔✔ the reactant that an enzyme acts on
enzyme substrate complex - correct answer ✔✔ enzyme binds to its substrate
active site - correct answer ✔✔ the region on the enzyme where the substrate bonds
induced fit - correct answer ✔✔ substrate brings chemical groups of the active side into the
positions that enhance their ability to catalyze the reaction
well answered to pass
metabolism - correct answer ✔✔ totality of an organisms chemical reactions
metabolic pathway - correct answer ✔✔ begins with a specific molecule and ends with a
product, each step catalyzed by a specific enzyme
catabolic pathways - correct answer ✔✔ release energy by breaking down complex molecules
into simpler compounds (exergonic)
anabolic pathways - correct answer ✔✔ consume energy to build complex molecule from
simpler ones (endergonic)
1st law of thermodynamics - correct answer ✔✔ energy can be transferred and transformed
but cannot be created or destroyed
2nd law of thermodynamics - correct answer ✔✔ every energy transfer or transformation
increases the entropy (disorder) of the universe
exergonic reaction - correct answer ✔✔ proceeds with net release of free energy and is
spontaneous (negative change in G)
endergonic reaction - correct answer ✔✔ absorbs free energy from its surrounds and is non
spontaneous; requires addition of free energy (positive change in G)
3 main kinds of work cell does - correct answer ✔✔ -chemical
, -transport
-mechanical
energy coupling - correct answer ✔✔ use of an exergonic process to drive an endergonic one;
coupled reactions are exergonic
how ATP drives endergonic reactions - correct answer ✔✔ phosphorylation (transferring a
phosphate group to some other molecule. or a phosphorylated intermediate)
ATP regenerated by - correct answer ✔✔ addition of phosphate group to ADP
ADP phosphorylated by _____ reactions in the cell - correct answer ✔✔ catabolic
activation energy - correct answer ✔✔ the initiation energy needed to start chemical reactions;
enzymes catalyze reactions by lowering this
enzymes do not affect the ______ - correct answer ✔✔ change in free energy
substrate - correct answer ✔✔ the reactant that an enzyme acts on
enzyme substrate complex - correct answer ✔✔ enzyme binds to its substrate
active site - correct answer ✔✔ the region on the enzyme where the substrate bonds
induced fit - correct answer ✔✔ substrate brings chemical groups of the active side into the
positions that enhance their ability to catalyze the reaction
