Which of the following coliforms is the most common cause of non-nosocomial urinary tract infections?
A) Escherichia coli
B) Serratia marcescens
C) Proteus mirabilis
D) Klebsiella pneumoniae
E) Enterobacter
A
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Single-stranded miRNA targets the RISC complex to specific mRNA targets that contain sequences complementary to the miRNA
A. true B. false
A typical cell cycle consists of
a. mitosis and meiosis. b. G1, the S phase, and G2. c. prophase, metaphase, anaphase, and telophase. d. interphase, mitosis, and cytokinesis. e. meiosis and fertilization.
In ________ selection, individuals intermediate in a phenotypic distribution have greater reproductive success.
A. balancing B. negative frequency-dependent C. directional D. stabilizing E. disruptive
Which factor increases the likelihood of population extinction?
A. High genetic diversity B. Large population size C. Isolation of a population from sources of immigrants D. High resource availability E. Isolation of a population from density-independent effects