Which of the following conditions favor fossilization?
a. A dead organism remains exposed for a long time.
b. A dead organism is covered by soft sediment.
c. A dead organism is covered by water.
d. A dead organism is exposed to scavengers that clean the bones.
e. C and D.
B
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If a male silk moth lacked a receptor for bombykol, what deficit would likely be observed?
A. The male would have difficulty locating a mate. B. The male would have difficulty locating food. C. The male would have difficulty responding to alarm signals. D. The male would have difficulty attracting a female moth. E. The male would have difficulty molting.
Campylobacter thioglycollate broth serves which purpose when used in the bacterial fecal culture?
a. Evaluation of general flora and predomi-nant species b. Selection of enteric pathogens such as Salmonella, Aeromonas, and others c. Inhibition of normal flora and selection of enteric pathogens d. Enrichment for Campylobacter spp.
What part of the ATP synthase is responsible for catalyzing ATP formation?
a. the basal unit b. the headpiece c. the stalk d. the lollipop e. the electrons
An example of mutualism is:
a. remora fish attached to or following a shark. b. cleaner shrimp removing parasites from a fish. c. tapeworm living in the digestive system of a fish. d. hagfish feeding off a whale killed by an Orca. e. interactions between the barnacle species Semibalanus and Chthamalus