Which of the following pollutants is generally stored in dry locations because they remain a potential problem for thousands of years?
A) radioactive waste
B) PANs (peroxyacyl nitrates)
C) CFCs
D) heavy metals
E) gasoline and oil
A
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Which reaction is most likely to have more products than reactants when it reaches equilibrium?
a. DG = -25 kcal/mol
b. DG = -50 kcal/mol c. DG = -75 kcal/mol d. DG = -100 kcal/mol e. They will all have the same ratio of products to reactants regardless of the DG value.
Which of the following generally makes skeletal muscle different from both smooth and cardiac muscle?
A) Skeletal muscles are made of cells called "fibers." B) Skeletal muscle cannot be contracted voluntarily. C) Skeletal muscle can be contracted voluntarily. D) Skeletal muscle cells have nuclei.
Homo sapiens is the name of a species. Homo is the name of a genus. Hominidae is the name of a family. Primate is the name of an order. Mammal is the name of a:
a) class. b) phylum. c) variety. d) kingdom. e) None of the above is correct.
Which of the following statements regarding dynamic instability is false?
(a) Each microtubule filament grows and shrinks independently of its neighbors. (b) The GTP cap helps protect a growing microtubule from depolymerization. (c) GTP hydrolysis by the tubulin dimer promotes microtubule shrinking. (d) The newly freed tubulin dimers from a shrinking microtubule can be immediately captured by growing microtubules and added to their plus end.