The light-independent reactions of plants function to make organic molecules using carbon dioxide as a carbon source. What is the electron source that helps reduce carbon dioxide to sugars and other organic molecules?
A) NADH
B) NADPH
C) ATP
D) electrons from oxygen
Answer: B
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Suppose that an induced mutation removes most of the end of the UTR of an mRNA. What is most likely to happen?
A) Removal of the UTR will have no effect because the exons are still maintained. B) Removal of the UTR also removes the 5' cap and the mRNA will quickly degrade. C) The UTR will duplicate and one copy will replace the end. D) The first exon will not be read because I1 will now serve as the UTR.
Analysis of a bacterial gene indicates that 24% of the nucleotides in the coding strand contain the base A, 18% contain the base T, 26% contain the base G, and 32% contain the base C. What percent of the nucleotides in the mRNA transcribed from this gene will contain the base U? (Enter your answer as a number only without the percent sign, e.g. enter 5 not5%.)
What will be an ideal response? 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 DNA and RNA? 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?
A plasmid vector typically has all of the following features except:
A. origin of replication B. selectable marker C. unique restriction sites D. a size range from 4–15 kbp E. par genes
What seagoing technology changed the course of navigation methods by providing an accurate means to determine the longitude of a ship?
a. Sextant b. Celestial charts c. Chronometer d. GPS