Your roommate is experiencing heartburn and asks you to purchase her an antacid. Chemically speaking, how do you know that the antacid will help eliminate her pain?
A) It is a buffer and will prevent the pH in her digestive tract from changing.
B) It has a higher OH- concentration to increase the pH in her digestive tract.
C) It is probably high in H+.
D) It has a low pH to balance the acidity in her digestive tract.
B
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The phenomenon in which one region of the body grows faster than another among different species is called...
A. paedomorphosis. B. Gremlin and BMP4 interaction. C. Hox gene translation. D. meroblastic cleavage. E. heterochrony.
Four of the five choices listed below are sources of
variation in a population. Select the exception. a. mutation b. sexual reproduction c. crossing over d. independent assortment e. law of dominance
Which of the following describes genome tiling arrays?
A) use of any DNA microchips B) use of any RNA microchips C) use of several microchips that together contain all sequences of a genome D) use of an entire series of SNP comparisons, including at least one per chromosome E) use of high-throughput technology
Which of the following is present during meiosis but not mitosis?
A. a chromatid B. a centromere C. a spindle D. a tetrad E. sister chromatids