Q1. The number of membranes composing a mitochondrion is
a. one.
b. two.
c. three.
d. four.
e. different for different mitochondria.
Q2. The inner membranes of mitochondria are called
a. filaments
b. cilia.
c. chromatin.
d. cristae.
e. centrioles.
Q3. According to the first law of thermodynamics
a. although energy in the universe is constant, energy in an earthly system may accumulate.
b. the amount of energy in the universe grows constantly.
c. chemical reactions create or destroy energy.
d. energy can not change from one form to another.
e. all of these
Q4. The second law of thermodynamics holds that
a. matter can neither be created nor destroyed.
b. energy can neither be created nor destroyed.
c. energy of one form is converted to a less concentrated form whenever energy is transformed or transferred.
d. entropy decreases with time.
e. none of these
Q5. The removal of electrons from a compound is known as
a. dehydration.
b. oxidation.
c. reduction.
d. phosphorylation.
e. a nonreversible chemical reaction.