The process by which some bacteria convert nitrate to atmospheric nitrogen gas is called ________
Fill in the blank(s) with correct word
denitrification
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South American anteaters have no teeth and a long sticky tongue; they rip open anthills and termite mounds and capture insects with their tongues
An Australian marsupial known as the numbat (Myrmecobius fasciatus) is not closely related to anteaters, but it too has highly reduced teeth and a long sticky tongue, and it feeds by ripping open termite burrows and lapping the insects up. Such similarities between species that are not inherited from a common ancestor are known as ________. Fill in the blank(s) with correct word
Trichomes _____
A) absorb sunlight, increasing the temperature of leaves B) open and close for gas exchange C) repel or trap insects D) increase water loss from leaves
A pro- strain of bacteria, which has not been in contact with any other strains, develops the ability to produce the amino acid proline. This mutant "rescue" could have been caused by
A. addition of the pro+ gene via transformation. B. mutation of the pro- gene during phage integration. C. correction of the pro- gene by reverse transcriptase. D. addition of the pro+ gene via transduction. E. removal of the pro- gene during excision.
Where do Darwin stop on his voyage on the H.M.S. Beagle?
A. Australia B. Africa C. South America D. All of the above D. None of the above