Which of the following statements concerning decomposers is false?
a. They act with detritivores to break down and recycle organic matter.
b. They are microbial heterotrophs.
c. They include bacteria but not fungi.
d. They use the products of decomposition to supply themselves with energy.
e. They are also called saprotrophs
C
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A light microscope can clearly resolve two
structures in a cell if they are no closer together than __________ percent of the shortest wavelength of visible light. a. 90 b. 80 c. 75 d. 60 e. 50
In endotherms, an increase in mass-specific metabolic rate lowers production efficiency
Indicate whether the statement is true or false
As a botanist working for a field museum, you spend many hours in the field looking for new species. On a recent trip you may have discovered a new plant species. Your observations of the new plant include small leaves with a single, unbranched vein and roots that seem to be simple extensions of the stem. Your new plant species is probably a(n):
A. Gnetophyte B. Fern C. Liverwort D. Angiosperm E. Lycophyte
A radial immunodiffusion test is helpful for
A) quantifying the amount of an antigen or of diverse antibody isotypes in a sample, or testing the patient's serum for diverse antigens. B) testing the patient's serum for diverse antigens. C) quantifying the amount of an antigen present in a sample. D) quantifying the amount of an antigen or of diverse antibody isotypes in a sample. E) quantifying the amount of different antibody isotypes in a sample.