quiz 4

ATP is a good source of energy for a cell because 

• its breakdown is coupled with energy-requiring reactions.

•  it takes no energy to make it.

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ATP is made up of all the following EXCEPT… 

• a hydrocarbon backbone. 

• a five-carbon sugar. 

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Anabolism is to building as _____________ is to breaking.

• all of the above

• degradation

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Gibbs free energy is a method of measuring energy that…

• represents energy available after entropy has been accounted for. 

• does not describe the energy released by the breaking of chemical bonds.

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 Which of the following statements most accurately describes the first law of thermodynamics? 

• energy can be neither created nor destroyed but it can be changed from one form to another. 

•  one usable form of energy can be completely converted into another usable form.

The graph below shows a spontaneous reaction. Which letter best describes the activation reaction line of an uncatalysed reaction? (Choose all that apply)

• a

• c

• b

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Imagine you just finished cleaning your room and organizing all your things, you leave and 5 minutes later you come back to find your little brother has made a mess again, Which law of thermodynamics best explains this situation?

• The second law of thermodynamics, the more energy that is lost by a system to its surroundings, the less ordered and more random the system is.

• The first law of thermodynamics, it states that this total amount of energy is constant.

Which energy association is correct? 

• Kinetic energy is energy of motion. 

• Potential energy must be used immediately or it is lost. 

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Which of the following best illustrates the second law of thermodynamics?

• Most of the energy transferred to a light bulb is harnessed to produce light, but some of the energy escapes in the form of heat. 

• Solar panels do not really create energy, they simply transfer energy from sunlight into electricity. 

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Gibbs free energy is a method of measuring energy that…

• represents energy available after entropy has been accounted for. 

• is abbreviated with the letter G because of its development to measure G-force pressures experienced by fighter pilots.