Which of these is the largest portion of the human brain, receives sensory input, and regulates voluntary motor output?
A. cerebellum
B. thalamus
C. diencephalon
D. cerebrum
Answer: D. cerebrum
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A chemist adds a chemical to pure water and there is a 100 fold increase in the concentration of hydrogen ions. What is the best approximation of the new pH value?
A. 0 B. 5 C. 7 D. 9 E. 14
The overall purpose of DGGE is to
A) separate genomes that are less than 95% similar. B) measure activity of cells that use DGGE as an energy source. C) detect cells that utilize a specific radiolabeled substrate. D) separate genes of the same length that differ in their denaturing profile due to sequence variation.
Members of the genus Pseudomonas
A. are aerobes that mineralize a wide variety of organic compounds. B. form cysts when starved for nutrients. C. perform anaerobic photosynthesis. D. are obligate intracellular parasites.
There is a homeostatic or regulatory mechanism that turns appetite and metabolism high or low to maintain the "fat set point." This mechanism is influenced by which of the following?
A) the aroma of food cooking stimulating salivation B) the amount of time since your last meal C) a hormone called leptin D) using more calories than you eat