In eukaryotes a series of ________ residues are added to the 3' end of an RNA molecule as part of the posttranscriptional processing used to produce functional mRNA.
A. guanine
B. cytosine
C. adenine
D. uracil
Answer: C
Biology & Microbiology
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A. direct selection. B. replica plating. C. penicillin enrichment. D. individual transfer.
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An example of a fluid feeder is a
a. hummingbird. b. lamprey. c. mosquito. d. snake. e. hummingbird and a mosquito.
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In which type of bacteria is the outermost layer of the cell a thick wall of peptidoglycan?
A. Proteobacteria B. Cyanobacteria C. Gram-positive bacteria D. Gram-negative bacteria E. Chlamydias
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Contraction of a muscle requires all the motor units to be undergoing tetanic contraction.
Answer the following statement true (T) or false (F)
Biology & Microbiology