DNA isolated from Aspergillis has an adenine content of 25%. Based upon this information, what is the %G + C within the Aspergillis DNA?
A) 0%
B) 25%
C) 50%
D) 75%
E) The answer cannot be determined from this information.
C) 50%
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MacConkey agar is
A. a selective agar. B. a differential agar. C. a selective and differential agar. D. used to distinguish between bacteria by the type of hemolysis observed.
Can a virus be killed?
A. Yes, destroying its genome kills it. B. No, viruses are capable of self-assembly and cannot be permanently killed. C. Yes, separating the genes from the capsid kills it. D. No, viruses are non-living and cannot die. 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 viruses as organisms? 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?
Humpbacks sometimes employ a unique method of feeding which entails: a. filtering amphipods from the mud
b. head-lunging. c. creating bubble nets. d. constantly skimming the surface of the ocean.
A scientist wants to determine whether a mutant phenotype is due to the loss of gene C or gene D, which are both deleted in a mutant fly with abnormal eyes. Mutant flies with transgenic gene C have wild-type eyes, whereas mutant flies with transgenic gene D have abnormal eyes. What can be concluded from these results?
A) Either gene C or gene D is required for normal eye development. B) Both gene C and gene D are required for normal eye development. C) Gene C is required for normal eye development. D) Gene D is required for normal eye development.