Course

Introductory Biology

Study Pack

Set 6 Metabolism Energy And Enzymes

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Question 1

(Multiple Choice)

Free
A living organism represents stored energy in the form of chemical compounds.When an organism dies,what happens to this stored energy?

A)All chemicals immediately lose their high-energy bonds.
B)All molecules immediately degrade into basic elements.
C)All energy immediately leaves,and that is one manifestation that the organism is dead.
D)The chemical compounds in cells lose their organization over time because there is no longer an input of energy to maintain the organized state.
E)The chemical compounds remain exactly intact and ready to start up again unless digested by a consumer or decay organism.

Answer

Question 2

(Multiple Choice)

Free
Which of these statements is NOT a consequence of the second law of thermodynamics?

A)While the total amount of energy is unchanged,the energy lost as heat is no longer useful to the cell in doing work.
B)Reactions that occur spontaneously are those that increase the amount of useful energy in a system.
C)The amount of disorder in the universe is always increasing.
D)To maintain organization of a cell,a continual input of energy is required.

Answer

Question 3

(Multiple Choice)

Free
Which best describes the first law of thermodynamics?

A)Energy can be created or destroyed and it cannot be changed from one form of energy to another.
B)Energy is not created nor destroyed,but it can change from one energy form to another.
C)Energy can be created from matter or used to produce matter.
D)Some useful energy is lost as heat whenever an energy transfer occurs.
E)Energy transfers are always 100% efficient in changing energy from one useful form to another.

Answer