Exam (elaborations)
BIOC 385 Exam 1 Questions & Detailed Answers
- Course
- BIOC 385
- Institution
- North Dakota State University
BIOC 385 Exam 1 Questions & Detailed Answersd
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BIOC 385 Exam 1 Questions & Detailed AnswersHow can an unfavorable reaction (delta G prime not > 0) - ANS Link it to a
favorable reaction
Binding of glucose to hexokinase causes a conformational change in the enzyme.
This is an example of the _____ model of enzyme catalysis. - ANS Induced-fit
Select the TWO true statements from the list below regarding the structure and
function of enzymes. - ANS Enzyme cofactors can increase the chemical
functionality of enzymes, which are otherwise limited by the R groups of amino
acids.
Enzymes increase the rates of biochemical reactions without changing the
equilibrium constant.
Shared intermediates are used so effectively in coupled reaction because they.... -
ANS None of these answers are correct.
In the five steps used by photosynthetic organisms to convert solar energy into
chemical energy, which molecules store the solar energy before sugar synthesis? -
ANS ATP and NADPH
What is the overall balanced reaction for the light reactions of photosynthesis? -
ANS 2 H2O + 8 Photons + 2 NADP+ + 3 ADP + 3 Pi -> O2 + 2 NADPH + 3 ATP
, R is the highly active form of an allosteric enzyme and T is the less active form of
enzyme. What would happen to [T]/[R] if substrate concentration is decreased? -
ANS Increase
The O2 generated from photosynthesis is derived from - ANS Water molecules that
directly reduce PSII
The Biosphere 2 project, in Tucson, Arizona, was an experiment involving a large
sealed terrarium with humans and photosynthetic plants living in balance. Why did
the project have to be interrupted after only a few months? - ANS Levels of CO2
rose to dangerous levels.
Which of the following defines the first law of thermodynamics? - ANS Total
amount of energy in the universe is a constant.
The enzyme in the photosynthetic A scheme that catalyzes the PQ cycle, which is
analogous to Complex III and the Q cycle in the mitochondrial electron transport
chain, is... - ANS cytochrome b6f
C4 plants are thought to be more efficient than C3 plants because they... - ANS Can
concentrate the CO2 in chloroplasts and therefore minimize side reactions with
O2.
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