Which of the following performs a chemical digestion similar to that done by pepsin?
a. aminopeptidase
b. carboxypeptidase
c. trypsin
d. gastrin
e. lecithin
C
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About thirteen different species of finches inhabit the Galàpagos Islands today, all descendants of a common ancestor from the South American mainland that arrived a few million years ago
About thirteen different species of finches inhabit the Galápagos Islands today, all descendants of a common ancestor from the South American mainland that arrived a few million years ago. Genetically, there are four distinct lineages, but the thirteen species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was the warbler finch (genus Certhidea). Next to diverge was the vegetarian finch (genus Camarhynchus), followed by five tree finch species (also in genus Camarhynchus) and six ground finch species (genus Geospiza). If the six ground finch species have evolved most recently, then which of these is the most logical prediction? A) They should be limited to the six islands that most recently emerged from the sea. B) Their genomes should be more similar to each other than are the genomes of the five tree finch species. C) They should share fewer anatomical homologies with each other than they share with the tree finches. D) The chances of hybridization between two ground finch species should be less than the chances of hybridization between two tree finch species.
Carbon is incorporated into the skeletons of corals and other marine organisms through the process of _____________. The CaCO3 making up these skeletons, in turn, becomes a major component of sedimentary rocks after these organisms die
A. chemical weathering. B. subduction. C. biomineralization. D. inorganic mineralization. E. bacterial oxidation.
A plant systematist studies the physiological systems of plants
a. True b. False
To better understand which genes are involved in developmental pathways, geneticists use experimental analyses of mutant phenotypes. What is this analytic approach called?
What will be an ideal response?