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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
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BIO 101 EXAM 2 NVCC ACTUAL EXAM 100 REALEXAM QUESTIONS AND CORRECT DETAILED
ANSWERS
Terms in this set (56)
What is metabolism? the totality of an organism's chemical reactions
What is a metabolic is a series of chemical reactions which begins with a
pathway? What is required specific molecule and ends with a product
in each step? Each step needs an enzyme
Catabolic pathways-release energy by breaking down
What is difference between
complex molecules into simpler compounds
anabolic and catabolic
Anabolic pathways -consume energy to build complex
pathways?
molecules from simpler ones
is composed of ribose (a sugar), adenine (a nitrogenous
What is ATP molecule
base), and three phosphate groupsThe triphosphate tail
consists of? Why is it
of ATP is the chemical equivalent of a compressed
unstable?
spring
is a chemical agent that speeds up a reaction without
What is a catalyst?
being consumed by the reaction
What are the three things
required for any reaction to
occur?
How does an enzyme Enzyme can speed up a reaction by lowering the EA
lowers the activation energy barrier without itself being consumed, also by right
of the substrate? orientation of molecules.
temperature
Which factors affect
pH
enzyme activity?
substrate concentration
, Competitive inhibitors bind to the active site of an
How competitive and non enzyme, competing with the substrate
competitive inhibitors differ Noncompetitive inhibitors bind to another part of an
from each other? enzyme, causing the enzyme to change shape and
making the active site less effective
What are the examples of toxins, poisons, pesticides, and antibiotics
inhibitors?
What is a feedback the end product of a metabolic pathway shuts down the
inhibition? pathway
the energy of the universe is constant, Every energy
What are the laws of
transfer or transformation increases the entropy (heat) of
thermodynamics?
the universe,
What are the parts of an substrate, active site
enzyme?
What is the difference In oxidation, a substance loses electrons, or is oxidized
between oxidation and In reduction, a substance gains electrons, or is reduced
reduction? (the amount of positive charge is reduced)
What is the ultimate source sun
of energy?
Light energy is converted to ATP when the electrons
What is phosphorylation?
(oxidation) from chlorophyll pass through a system of
What are the three ways to
carrier molecules
make ATP?
Glycolysis, Citric Acid Cycle, Oxidative phosphorylation
What are the endproducts is 2 ATP plus 2 NADH per glucose molecule
of glycolysis?
What are the products of 2 ATP, 6 NADH, 2 FADH2
citric acid cycle?
What are the stages of Glycolysis> Aerobic respiration> The Krebs Cycle> The
cellular respiration? write a electron transport chain
flow chart.
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