Which organism produces mostly shades of green or blue-green colonies? Microscopically, hyphae are hyaline and septate and produce brushlike conidiophores
a. Paecilomyces
b. Acremonium
c. Scopulariopsis
d. Penicillium
D
Colonies of Penicillium are most commonly shades of green or blue-green, but pink, white, or other colors may also be observed. The surface of the colonies may be velvety to powdery be-cause of the presence of conidia. Microscopically, hyphae are hyaline and septate and produce brushlike conidiophores (i.e., a penicillus).
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Indicate whether the statement is true or false
If you were given the task of choosing a biological control agent for a reed from eastern China that has become invasive in the southeastern U.S., what do you think would be the best choice? Consider both the effectiveness and the safety of the agent you be releasing.
A. A generalist beetle, native to the U.S., that can consume massive quantities of the reed in a few weeks. B. A nematode, native to eastern China, that specializes on the reed but can take up to two years to kill a plant. C. A caterpillar, native to the U.S., that normally eats close relatives of the weed, but has been found in lab trials to perform better on the Chinese reed. D. A fungal pathogen from eastern China that specializes on the reed and can kill a plant in a few months.
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A) organogenesis. B) fertilization. C) induction. D) cleavage. E) gastrulation.
For each polypeptide sequence listed, choose from the options given below to indicate which secondary structure the sequence is most likely to form upon folding. The nonpolar amino acids are italicized
A. Leu-Gly-Val-Leu-Ser-Leu-Phe-Ser-Gly-Leu-Met-Trp-Phe-Phe-Trp-Ile B. Leu-Leu-Gln-Ser-Ile-Ala-Ser-Val-Leu-Gln-Ser-Leu-Leu-Cys-Ala-Ile C. Thr-Leu-Asn-Ile-Ser-Phe-Gln-Met-Glu-Leu-Asp-Val-Ser-Ile-Arg-Trp amphipathic ? helix hydrophilic ? sheet amphipathic ? sheet hydrophobic ? helix hydrophilic ? helix