Which term refers to a structure with stems and leaves that arise from apical meristems?
a. protonema
b. rhizome
c. shoot system
d. vascular system
Answer: c. shoot system
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In addition to S. aureus, impetigo may also involve
A. M. luteus. B. S. pyogenes. C. S. epidermidis. D. Pseudomonas spp.
If a stretch of human double stranded DNA contains 47% G + C, then
a. it contains 47% A + T b. there are more pyrimidines than purines c. there are more purines than pyrimidines d. it contains 53% A + T e. there are no genes in this stretch of DNA
You discover a butterfly that has some similarity to members of the species Faunis canens, but it also has a few important differences. What taxonomic level would best describe your new discovery?
A) order B) family C) species D) genus
Which of the following segments of DNA would likely have the fastest molecular clock rate?
a. Noncoding DNA that has a regulatory function b. A pseudogene (a gene that has lost sequences needed for expression) c. A gene for an essential enzyme d. A gene for rRNA e. A gene for a cytochrome involved in cellular respiration