The conversion of a diamond into graphite is a spontaneous reaction. Why are most women walking around with
diamond rings and not graphite rings?
a. inorganic substances, like diamonds, do not react like organic substances
b. the transition state is very stable
c. the energy of activation is very high
d. the free energy of this reaction is too low
e. the free energy of this reaction is too high
ANSWER: c
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The rigid chitinous exoskeleton of an arthropod has all of the following functions except it
A. provides a place for muscle attachment. B. protects the animal from predators. C. impedes water loss. D. maintains a uniform size for all individuals of that species. E. prevents injury to the animal.
What features of cephalopods have allowed some species to grow to large sizes relative to gastropods?
What will be an ideal response?
A binding site for RNA polymerase is called a _____
a. gene b. promoter c. codon d. protein
The euphotic zone is that region of the ocean where
A. photosynthesis occurs. B. there is a warm temperature. C. sessile organisms are supported. D. there is always light.