Which of the following is not a female component of a flower?
a. anther
b. carpel
c. stigma
d. style
A
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Characteristics that strongly indicate the presence of pigmented Prevotella or Porphyromonas in a clinical specimen include:
a. yellow-green fluorescence. b. rhizoid margins resembling a "Medusa head" on anaerobic blood agar. c. brick-red fluorescence under long-wavelength ultraviolet (UV) light. d. chartreuse fluorescens.
In flowering plants, gametes are produced by the process of mitosis
1.True 2.False
Analysis of mitochondrial DNA from different species of stickleback fish in three lakes disproves the hypothesis of a
common ancestor for all three species. __________________ Indicate whether the statement is true or false.
When you hold your breath, which of the following leads to the urge to breathe?
a. Falling blood O2 concentration b. Falling blood CO2 concentration c. Rising blood CO2 concentration d. Rising blood CO2 concentration and falling pH e. Rising blood pH