The counterstain used in the Gram stain is a basic dye
Indicate whether the statement is true or false
TRUE
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A microbiologist Gram stains a bacterium and finds the bacterium to be blue to purple in color. This identifies the
A. bacterium as gram-positive. B. bacterium as a disease-causing organism. C. bacterium as an endospore former. D. species of bacterium. E. bacterium as gram-negative.
Plasmodesmata are most similar to
a. gap junctions in animal cells. b. tight junctions in bacteria. c. basement membranes in animal cells. d. adhering junctions in heart muscle. e. both tight junctions in bacteria and adhering junctions in heart muscle
Which of the following is an example of a population?
1.all of the Bent-nosed clams in a mudflat in Elkhorn Slough, California 2.all of the invertebrates living in a mudflat in Elkhorn Slough, California 3.all of the organisms in a mudflat in Elkhorn Slough, California interacting with the physical and chemical environment 4.all regions of the Earth’s crust, waters, and atmosphere in which organisms live
Climate diagrams are valuable because they show
A) seasonal variation in temperature and precipitation. B) abundance of dominant vegetation. C) diversity of plant species present. D) variation in carbon availability.