Some fungi are called rusts because:
A. they give a reddish cast to soils in which they grow
B. they have reddish spores that emerge from the leaves of infected plants
C. the enzymes they produce for breaking down wood also causes iron to rust
D. they produce rust-colored mushrooms as fruiting bodies
E. none of the other choices provided
B. they have reddish spores that emerge from the leaves of infected plants
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The following species, P. aeruginosa, P. fluorescens, Pseudomonas putida, P. veronii, Pseudomonas monteilii, and Pseudomonas mosselii, all produce a water-soluble, yellow-green pigment called:
a. pyocyanin. b. pyomelanin. c. pyorubrum. d. pyoverdin.
A homozygous recessive where “A” represents the
trait has two recessive alleles __________. Fill in the blank(s) with the appropriate word(s).
Nitrogen gas in the atmosphere is converted to forms of nitrogen usable by vegetation via:
A) assimilation. B) fixation. C) denitrification. D) nitrification. E) decomposition.
The formation of a D-loop is associated with which of the following models of recombination?
A. Double-stranded break model B. Holliday model C. Single-stranded break model