Photosynthesis occurs in _____, while respiration occurs in _____
a. plants, animals d. plants, plants and animals
b. animals, plants e. plants and animals, plants and animals
c. plants and animals, animals
D
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Suppose the protein specified by bicoid was injected into Drosophila embryos, so that a high concentration was present everywhere in the embryo. What might be the result of such an experiment?
A) The embryos would grow larger than normal. B) The embryos would show no development of posterior regions. C) The embryos would show no development of anterior regions. D) The embryos would halt their development.
Fishery effort combined with catch data is used to
a. determine if a fishery is in jeopardy. b. determine the pay rate for fishers. c. determine the economic value of a fishery. d. estimate the ocean's productivity.
When Cuvier considered the fossils found in the vicinity of Paris, he concluded that the extinction of species _____
A) occurs, but that there is no evolution B) and the evolution of species both occur C) and the evolution of species do not occur D) does not occur, but evolution does occur
A keystone species that is a predator will
A) maintain the species diversity in a community. B) harvest prey species to extinction. C) help many of its prey reproduce. D) reduce the diversity of the community.