1|Page
NVCC BIO 101 Exam 2 ||Verified Exam!!|| Most Recent
Exam Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Guaranteed Success!! Newest Exam!!!
How does an enzyme lowers the activation energy of the
substrate? - Answer-Enzyme can speed up a reaction by
lowering the EA barrier without itself being consumed, also
by right orientation of molecules.
Which factors affect enzyme activity? - Answer-
temperature
pH
substrate concentration
How competitive and non competitive inhibitors differ from
each other? - Answer-Competitive inhibitors bind to the
active site of an enzyme, competing with the substrate
Noncompetitive inhibitors bind to another part of an
enzyme, causing the enzyme to change shape and
making the active site less effective
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What are the examples of inhibitors? - Answer-toxins,
poisons, pesticides, and antibiotics
What is a feedback inhibition? - Answer-the end product of
a metabolic pathway shuts down the pathway
What are the laws of thermodynamics? - Answer-the
energy of the universe is constant, Every energy transfer
or transformation increases the entropy (heat) of the
universe,
What is metabolism? - Answer-the totality of an organism's
chemical reactions
What is a metabolic pathway? What is required in each
step? - Answer-is a series of chemical reactions which
begins with a specific molecule and ends with a product
Each step needs an enzyme
What is difference between anabolic and catabolic
pathways? - Answer-Catabolic pathways-release energy
by breaking down complex molecules into simpler
compounds
,3|Page
Anabolic pathways -consume energy to build complex
molecules from simpler ones
What is ATP molecule consists of? Why is it unstable? -
Answer-is composed of ribose (a sugar), adenine (a
nitrogenous base), and three phosphate groupsThe
triphosphate tail of ATP is the chemical equivalent of a
compressed spring
What is a catalyst? - Answer-is a chemical agent that
speeds up a reaction without being consumed by the
reaction
What are the parts of an enzyme? - Answer-substrate,
active site
What is the difference between oxidation and reduction? -
Answer-In oxidation, a substance loses electrons, or is
oxidized
In reduction, a substance gains electrons, or is reduced
(the amount of positive charge is reduced)
, 4|Page
What is the ultimate source of energy? - Answer-sun
What is phosphorylation? What are the three ways to
make ATP? - Answer-Light energy is converted to ATP
when the electrons (oxidation) from chlorophyll pass
through a system of carrier molecules
Glycolysis, Citric Acid Cycle, Oxidative phosphorylation
What are the endproducts of glycolysis? - Answer-is 2 ATP
plus 2 NADH per glucose molecule
What are the products of citric acid cycle? - Answer-2 ATP,
6 NADH, 2 FADH2
What are the stages of cellular respiration? write a flow
chart. - Answer-Glycolysis> Aerobic respiration> The
Krebs Cycle> The electron transport chain
Which molecules act as electron carriers and bring the
electrons to electron transport chain? - Answer-
NVCC BIO 101 Exam 2 ||Verified Exam!!|| Most Recent
Exam Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Guaranteed Success!! Newest Exam!!!
How does an enzyme lowers the activation energy of the
substrate? - Answer-Enzyme can speed up a reaction by
lowering the EA barrier without itself being consumed, also
by right orientation of molecules.
Which factors affect enzyme activity? - Answer-
temperature
pH
substrate concentration
How competitive and non competitive inhibitors differ from
each other? - Answer-Competitive inhibitors bind to the
active site of an enzyme, competing with the substrate
Noncompetitive inhibitors bind to another part of an
enzyme, causing the enzyme to change shape and
making the active site less effective
,2|Page
What are the examples of inhibitors? - Answer-toxins,
poisons, pesticides, and antibiotics
What is a feedback inhibition? - Answer-the end product of
a metabolic pathway shuts down the pathway
What are the laws of thermodynamics? - Answer-the
energy of the universe is constant, Every energy transfer
or transformation increases the entropy (heat) of the
universe,
What is metabolism? - Answer-the totality of an organism's
chemical reactions
What is a metabolic pathway? What is required in each
step? - Answer-is a series of chemical reactions which
begins with a specific molecule and ends with a product
Each step needs an enzyme
What is difference between anabolic and catabolic
pathways? - Answer-Catabolic pathways-release energy
by breaking down complex molecules into simpler
compounds
,3|Page
Anabolic pathways -consume energy to build complex
molecules from simpler ones
What is ATP molecule consists of? Why is it unstable? -
Answer-is composed of ribose (a sugar), adenine (a
nitrogenous base), and three phosphate groupsThe
triphosphate tail of ATP is the chemical equivalent of a
compressed spring
What is a catalyst? - Answer-is a chemical agent that
speeds up a reaction without being consumed by the
reaction
What are the parts of an enzyme? - Answer-substrate,
active site
What is the difference between oxidation and reduction? -
Answer-In oxidation, a substance loses electrons, or is
oxidized
In reduction, a substance gains electrons, or is reduced
(the amount of positive charge is reduced)
, 4|Page
What is the ultimate source of energy? - Answer-sun
What is phosphorylation? What are the three ways to
make ATP? - Answer-Light energy is converted to ATP
when the electrons (oxidation) from chlorophyll pass
through a system of carrier molecules
Glycolysis, Citric Acid Cycle, Oxidative phosphorylation
What are the endproducts of glycolysis? - Answer-is 2 ATP
plus 2 NADH per glucose molecule
What are the products of citric acid cycle? - Answer-2 ATP,
6 NADH, 2 FADH2
What are the stages of cellular respiration? write a flow
chart. - Answer-Glycolysis> Aerobic respiration> The
Krebs Cycle> The electron transport chain
Which molecules act as electron carriers and bring the
electrons to electron transport chain? - Answer-
