How many unique mRNA codons can be constructed from the four different RNA nucleotides?
A. 61
B. 64
C. four
D. 12
E. 16
Answer: B
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If the primary somatosensory cortex is destroyed by
a stroke, what is impaired? a. movement on both sides of the body b. reception of sensory information from skin and joints c. movement by the right side of the body d. movement by the left side of the body e. none of these
As cytokinins are primarily produced in roots, what route would they travel to influence lateral shoot formation in a recently topped tree?
A) symplastic B) trachieds/vessels C) phloem D) apoplastic
In meiosis I, cytokinesis usually occurs after telophase I and produces
a)one diploid cell with sister chromatids still attached. b)two haploid cells with sister chromatids still attached. c)four haploid cells. d)two diploid cells. e)one haploid cell.
In a branched pathway with many end products, an abundance of one of the end products will usually inhibit ________.
A. the first committed step in the branch of the pathway leading to the production of that particular product B. the last step before the branch leading to the production of that particular end product C. the last step in the production of that particular product D. the first step in the set of pathways