In what order do these layers occur in deep lakes in the temperate zone during the summer?
A. thermocline - epilimnion - hypolimnion
B. hypolimnion - epilimnion - thermocline
C. epilimnion - thermocline - hypolimnion
D. epilimnion - hypolimnion - thermocline
Answer: C
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Suppose a new species of bacterium is discovered. It contains a form of DNA pol III that can add new nucleotides to either the 5' end or the 3' end of an existing strand. All other properties of the enzyme remain unchanged. How would DNA replication in these bacteria differ from normal replication?
A. Both new strands could be synthesized continuously like the leading strand. B. The same polymerase molecule could synthesize both strands at the same time. C. Helicase would no longer be required for replication. D. DNA gyrase would no longer be required for replication. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about DNA replication? 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?
True or false: some RNA molecules possess catalytic activity
A. true B. false
Your daughter probably has strep throat caused by Streptococcus pyogenes. The traditional method of diagnosis involves culturing on blood agar, but this process is time consuming. Your doctor wants a more rapid identification of the infectious agent using a specimen directly obtained from the patient's throat. He would prefer to use a test that can be read in his office without having to culture and isolate the organism. He would likely choose the
A. immunochromatographic test. B. Western Blot test. C. direct fluorescence test. D. pulse-field gel electrophoresis.
Sphincter muscles regulate the opening and closing of the capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.
Answer the following statement true (T) or false (F)