Nocardia spp. form branched filaments that extend along the agar surface, which are called _____ hyphae
a. surface
b. substrate
c. aerial
d. topical
B
Nocardia spp. form branched filaments that extend along the agar surface and are referred to as substrate hyphae.
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Mutations of keratins in the ________ that resist tensile forces in the skin cause the blistering disease known as epidermolysis bullosa simplex
A) intermediate filaments B) microtubules C) microfilaments D) actin filaments E) crescentin filaments
Through what process do deciduous plants drop their leaves?
A) thigmotropism B) gravitropism C) abscission D) photoperiodism
Viruses are ________ -coated fragments of DNA or RNA.
Fill in the blank(s) with the appropriate word(s).
Upon observing the 12 types of finches he encountered on the Galápagos Islands, Charles Darwin knew immediately that they were closely related.
a. true b. false