Increases in poly(A) tail length result in increased ____
a. transcription
b. translation
c. protein stability
d. mRNA degradation
e. alternative splicing
ANSWER: b
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. It’s Friday afternoon, which means it’s time to clean out the shared fridge in the break room. Besides the usual assortment of half-eaten sandwiches and stale diet cola, you discover a moldy orange in a drawer that looks like it’s been there forever. Next to it you find a scribbled note that turns out to be a limerick: My lunch last week was ricotta With a couple of oranges and a soda But yesterday my sweet oranges Sprouted fuzzy black sporanges And now all I’ve got is Deuteromycota Chuckling to yourself, you can’t help but notice that the poet is using outdated and inaccurate terminology. Assuming that the orange is covered in bread mold (Rhizopus stolonifer), to which phylum does it belong?
a. Chytridiomycota b. Basidiomycota c. Zygomycota d. Ascomycota
Energy stored in which of the following substances
is converted by mitochondria to a form usable by the cell? a. water b. organic compounds c. NAD+ d. ATP e. carbon dioxide
Which of the following stabilizes homophilic interactions between the extracellular domains of cadherins on neighboring cells?
A) hyaluronate B) proteoglycans C) Ca2+ D) integrins E) talin
Nucleic acid is found
A. only in animal cells. B. only in plant cells. C. in all living cells. D. only in carbohydrates.