Responsible for the majority of DNA replication
A. DNA ligase
B. DNA primase
C. Topoisomerase
D. DNA polymerase I
E. DNA polymerase III
E
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Which body site is preferentially infected by foodborne pathogens?
A) gastrointestinal tract B) respiratory tract C) cerebrospinal fluid D) liver
Diversification of mammals after the extinction of the dinosaurs is considered an adaptive radiation because a few mammal species rapidly evolved into most of the current mammalian lineages in a relatively short amount of time. This diversification was partially driven by the evolution of endothermic homeostasis in mammals, which is an example of
A. allopatric speciation. B. reproductive isolation. C. a key innovation. D. hybridization. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about adaptive radiation? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
An experimental test of the hypothesis to explain the origin of the first organic compounds on Earth might include all of the following sequential steps except
A. assembling an atmosphere with H2, CH4, NH3, and H2S. B. placing this atmosphere over liquid water. C. inoculating with a few bacteria to get the process started. D. increasing the temperature of the gases. E. providing energy with electrical spark discharges.
Which of the following plants were dominant
in the Carboniferous period?
a. club mosses b. peat mosses c. ferns d. liverworts e. more than one of these