A solution is a(n)
a) breaking of a chemical bond
b) chemical reaction
c) evenly distributed mixture of two or more substances
d) combination of two ore more liquids
Answer: c) evenly distributed mixture of two or more substances
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Which of the following sequences would be cleaved by a type II restriction endonuclease?
A) TTGCCGA AACGGCT B) GGGGGGG CCCCCCCC C) GTAATG CATTAC D) GAATTC CTTAAG
A nonnative species accidentally introduced into Lake Erie, ____ inadvertently helped restore the polluted lake by eating phytoplankton.
a. mayflies b. oligochaete worms c. phytoplankton d. salmon e. zebra mussels
An increase in which of the following will increase the rate of diffusion?
a. Temperature b. Solvent density c. Molecule mass d. Number of proteins
A faster-than-normal heart rate is called:
a. brachycardia b. atrial fibrillation c. tachycardia d. ventricular fibrillation e. stroke