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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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

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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

Biology & Microbiology