Denitrification
What will be an ideal response?
•Strictly anaerobic process, N species used as alternate electron acceptors.
•Nitrate (NO3-) è Nitrite (NO2-) è Nitric Oxide (NO) è Nitrous Oxide (N2O) è Dinitrogen (N2).
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Cells conserve energy and resources by making active proteins only when they are needed. If a protein is not needed, which of the following methods of control would be the most energy-efficient?
A. block transcription B. degrade the mRNA after it is made C. prevent translation of the mRNA D. degrade the protein after it is made 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 transcription and translation? Consider Possibilities · What other information is related to the question? · What other information is related to the question? Which information is most useful? · Consider the different answer options. Which can you rule out? 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?
Members of the Archaea differ from members of the Bacteria (or eubacteria) in that only the members of the Archaea have
a. different lipids in their membranes. b. a nuclear membrane. c. enzymes to carry out respiration in their plasma membranes. d. a peptidoglycan cell wall. e. a variety of morphologies, including cocci and vibrios.
Before a cell divides, it must ____ its genetic information
a. duplicate b. translate c. isolate d. protect e. distribute
In an organism, X, it is found to be impossible to generate loss-of-function mutants for most genes. There is an alternative method of introducing random mutations that can later be screened for the gene(s) in question
This can be accomplished by using insertions due to what structures?