General ---------Biology----------------------------------------------------- ------------------Online-----------------------------wilcox@sunline.net Ch. 6  Metabolism of carbohydrates, fats, proteins, nucleic acids

Which of the following would decrease the entropy within a system?
     a. dehydration synthesis
     b. hydrolysis
     c. respiration
     d. digestion
     e. catabolism

Which of the following is part of the first law of thermodynamics?
     a. Energy cannot be created or destroyed.
     b. The entropy of the universe is decreasing.
     c. The entropy of the universe is constant.
     d. Kinetic energy is stored energy that results from the specific
        arrangement of matter.
     e. Energy cannot be transferred or transformed.

Whenever energy is transformed, there is always an increase
     a. in the free energy of the system.
     b. in the free energy of the universe.
     c. in the entropy of the system.
     d. in the entropy of the universe.
     e. in the enthalpy of the universe.

Which of the following is true for exergonic reactions?
     a. The products have more potential energy than the reactants.
     b. The products have less potential energy than the reactants.
     c. Reactants will always be completely converted to products.
     d. A net input of energy from the surroundings is required for the
        reactions to proceed.
     e. The reactions upgrade the chemical energy in the products at the
        expense of energy from the surroundings.

What is the general process of breaking down large molecules into
     smaller ones called?
     a. catalysis
     b. metabolism
     c. anabolism
     d. dehydration
     e. catabolism

What is the general process of breaking down large molecules into
     smaller ones called?
     a. catalysis
     b. metabolism
     c. anabolism
     d. dehydration
     e. catabolism

All of the following statements are representative of the second law
     of thermodynamics EXCEPT
     a. Energy transfers are always accompanied by some loss.
     b. Heat energy represents lost energy to most systems.
     c. Systems tend to rearrange themselves toward greater entropy.
     d. Highly organized systems require energy for their maintenance.
     e. Every time energy changes form, there is a decrease in entropy.

All of the following are synonymous with the term entropy EXCEPT
     a. randomness.
     b. disorder.
     c. low free energy.
     d. equilibrium.
     e. organized. 

answers