The genetic material of a prokaryotic cell is stored in a small nucleus located adjacent to the plasma membrane
Indicate whether the statement is true or false
FALSE
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A scientist makes three artificial mRNA strands:
(x) 5' AAAUUUAAAUUUAAAUUUAAAUUUAAA 3' (y) 5' UUUCCCUUUCCCUUUCCCUUUCCCUUU 3' (z) 5' AUAUAUAUAUAUAUAUAUAUAUAUAU 3' When he analyzes the polypeptides produced, he finds that: x produces a polypeptide that is 50% phenylalanine and 50%lysine. y produces a polypeptide that is 50% phenylalanine and 50% proline. z produces a polypeptide that is 50% isoleucine and 50% tyrosine. Based on these results only, the best conclusion to make is that A. AUA codes for isoleucine B. AAA codes for phenylalanine C. AAA codes for lysine D. AAA codes for lysine and AUA codes for isoleucine E. AAA codes for phenylalanine and AUA codes for isoleucine 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 the genetic code? Consider Possibilities · 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?
The amniotic egg was a key adaptation allowing vertebrates to make the transition to life on land where diffusion to/from a watery environment could not allow a developing embryo to meet its metabolic needs
Its three membranes are the _____, which surrounds the embryo in a watery sac; the _____, which sequesters metabolic waste away from the developing embryo; and the _____, which surrounds the embryo and other sacs. A. amnion; chorion; allantois B. chorion; amnion; allantois C. chorion; allantois; amnion D. amnion; allantois; chorion E. allantois; chorion; amnion
Each of the following is inoculation of normal biota to a newborn except
A. bottle feeding. B. contact with hospital staff. C. the birth process through the birth canal. D. breast feeding. E. All of the choices are correct.
Anti-human antibodies (specific for human IgG antibodies) with fluorescent molecules covalently attached are used for
A) direct fluorescent antibody tests. B) indirect fluorescent antibody tests. C) direct ELISAs. D) indirect ELISAs. E) immunodiffusion tests.