An endemic species is one that
A. has been cultivated by humans.
B. functions as a keystone species.
C. is found in only one particular place or region.
D. can be used as an indicator species.
E. does not effect ecosystem function.
C. is found in only one particular place or region.
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The direction of genetic information transfer in a retrovirus (such as HIV) is
A. DNA to mRNA to protein. B. RNA to DNA to mRNA to protein. C. DNA to protein. D. RNA to mRNA to protein. E. RNA to protein. 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 the HIV infection cycle? 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?
Which of the following are found exclusively in the nucleus of a cell?
a. DNA b. mRNA c. proteins d. tRNA
In terrestrial and shallow-water ecosystems, the grazing food chain is dominant over the detrital food chain
Indicate whether the statement is true or false
Why are hypotheses never accepted as proven by scientists?
A) A hypothesis cannot ever be true or false because it is an opinion. B) Experimentation cannot support a hypothesis because it only tests predictions. C) Hypotheses change every time a new experiment is conducted. D) Alternative hypotheses might provide a better answer to the research question.