Many factors are believed to reduce songbird breeding success in fragmented habitats. Select the
exception.
a. brood parasitism by cowbirds
b. nest predation by blue jays
c. lack of necessary habitat types
d. nest predation by domestic cats
e. increased connections between habitats
E
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You are working in a clinical laboratory in a hospital setting. You're handed a throat swab from a patient. You are told specifically that the physician is only interested in the presence and type of Gram positive cells
Identification isn't the main goal here-just a first step to work towards determining what Gram positive cells might be there.What might you do first to go about working towards this goal? A. Perform a Gram stain. B. Streak the sample for isolation on a tryptic soy agar general purpose medium plate. C. Streak the sample for isolation on a medium that is selective for Gram positive cells while suppressing Gram negative cell growth. D. Grow the microbes on the swab by inoculating a tryptic soy broth liquid medium tube. E. Perform an acid-fast stain.
The methanogens
A. are part of the Domain Archaea. B. oxidize hydrogen gas to produce methane. C. appear only in aerobic environments. D. use oxygen as a terminal electron acceptor. E. are part of the Domain Archaea AND oxidze hydrogen gas to produce methane.
Bacterial enzymes that are part of a rarely used catabolic pathway are usually organized into a(n) __________
a. inducible operon b. repressible operon c. inducible zinc finger d. repressible leucine zipper e. constitutive operon
Prior to hunting, the population likely had more alleles for the 47 genes.
a. true b. false