Eukaryotic cells contain
A. a nucleus.
B. cell membranes.
C. organelles.
D. All of these answers are true.
D. All of these answers are true.
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Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya?
a. A b. B c. C d. D e. E
A serous membrane lines a body cavity that opens to the outside of the body
____________________ Indicate whether the statement is true or false.
The earliest multicellular animals in the fossil record are
A) sponges. B) mammals. C) kelp. D) worms. E) trilobites.
You lead a research team challenged with the task of creating a regulatory protein able to shut off transcription of a particular gene. You focus your design around a binding site called an operator that is associated with the promotor. The physical location of the operator most likely to affect transcription would be
A. upstream of the gene promoter. B. downstream of the gene promoter. C. internal to the gene itself. D. internal to the gene promoter. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about operators and repressors? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?