Sea urchins and sand dollars fall into which of the following Echinoderm classes?
a. Ophiuroidea
b. Crinoidea
c. Echinoidea
d. Holothuroidea
c. Echinoidea
Biology & Microbiology
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Which of the following is a novel antimicrobial target?
A) disruption of lipid biosynthesis B) inhibition of protein synthesis C) inhibition of cell wall biosynthesis D) inhibition of peptidoglycan crosslinking
Biology & Microbiology
Which of the following is NOT a densitydependent
limiting factor?
a. disease b. parasitism c. lack of living space d. dramatic change in climate e. all of these are density-dependent limiting factors
Biology & Microbiology
All of these flower structures are modified leaves EXCEPT
A) sepals. B) petals. C) stamens. D) carpels. E) pollen.
Biology & Microbiology
The counterstain in the Gram stain is
a. A negative stain. b. A mordant. c. An acid dye. d. A basic dye. e. Necessary to determine the Gram reaction.
Biology & Microbiology