JMU Bio 140 Exam 3 | 211 Questions with 100% Correct Answers
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Course
JMU Bio 140
Institution
JMU Bio 140
Acetyl-CoA enters into what? Correct Answer: citric acid cycle
What do all cells require? Correct Answer: -a way to encode/transmit information
-a membrane separating inside from out
-energy
What does Adenosine Triphosphate (ATP) do? Correct Answer: provides energy in a form that all ce...
jmu bio 140 exam 3 | 211 questions with 100 correct answers
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JMU Bio 140 Exam 3 | 211 Questions
with 100% Correct Answers
Acetyl-CoA enters into what? Correct Answer: citric acid cycle
What do all cells require? Correct Answer: -a way to encode/transmit information
-a membrane separating inside from out
-energy
What does Adenosine Triphosphate (ATP) do? Correct Answer: provides energy in a form that
all cells can readily use to perform the work of the cell
Where does the molecule ATP contain energy? Correct Answer: in its chemical bonds
What part of ATP has high energy potential? Correct Answer: phosphate group
All organisms are split into what two basic categories? Correct Answer: -phototrophs
-chemotrophs
Phototrophs get energy from where? Correct Answer: sunlight
Chemotrophs get energy from what? Correct Answer: chemical compounds
What are the two types of ways organisms receive carbon? Correct Answer: -autotrophs
-heterotrophs
Autotrophs receive carbon from where? Correct Answer: inorganic sources
Heterotrophs receive carbon from where? Correct Answer: organic compounds
Define metabolism Correct Answer: building up and breaking down of carbon sources
What are the two types of metabolism? Correct Answer: -catabolism
-anabolism
Does catabolism produce or require ATP? Correct Answer: produces
Does anabolism produce or require ATP? Correct Answer: requires
What are examples of work which metabolism helps with in the cell? Correct Answer: -
synthesizing DNA, RNA, and proteins
, -moving vesicles in a cell
-pumping substances across membranes
Define kinetic energy Correct Answer: energy in motion
What are forms of kinetic energy? Correct Answer: -movement
-light
-electricity
-thermal energy
Define potential energy Correct Answer: stored energy
Potential energy depends on what two things? Correct Answer: structure and position
Potential energy can be released when what happens? Correct Answer: structure or position is
changed
Chemical energy is a form of what type of energy? Correct Answer: potential
Strong bonds have ________ potential energy than weak bonds. Correct Answer: less
Why are phosphate bonds so weak? Correct Answer: the negatively charged oxygens repel one
another
What is the first law of thermodynamics? Correct Answer: energy is neither created nor
destroyed, it simply changes from one form to another
How would you calculate the kinetic energy of a ball which rolled down the steps? Correct
Answer: potential energy at the top minus the potential energy at the bottom of the stairs
How is energy released in electrons? Correct Answer: heat or lights
Define the second law of thermodynamic Correct Answer: the amount of disorder (entropy)
increases when energy is transformed -> some energy is unable to do work
Define entropy Correct Answer: A measure of disorder or randomness (energy not available to
do work)
In the universe, the degree of disorder can only _________? Correct Answer: increase
Define gibbs free energy Correct Answer: energy available to do work
∆G= what Correct Answer: G products-G reactants
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