Two modular elements that appear as consensus sequences upstream from RNA polymerase II transcription start sites are ________
A) enhancers and telomeres
B) TATA and CAAT
C) rDNA and nucleolar organizers
D) TTAA and CCTT
E) microsatellites and transposons
Answer: B
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Which of the following produces muscle tetanus?
a. low levels of acetylcholine b. high levels of creatine phosphate c. anaerobic metabolism d. repeated stimulations over short periods of times e. decreased levels of calcium
The level of depolarization at which an action potential will be triggered is referred to as the
A. refractory potential. B. threshold potential. C. resting potential. D. membrane potential. E. cationic potential.
Which of these is not an organic molecule?
a. carbohydrate b. minerals c. proteins d. glucose e. lipids
Which of the following is associated with groundwater mining?
A. standing water (lakes and ponds) B. ice C. aquifers D. runoff E. ocean