Which of the following schematics MOST likely describes the correct order of cellular changes that occur in the progression of malignancy?
a) Normal ? hyperplastic ? dysplastic ? neoplastic ? metastatic
b) Normal ? dysplastic ? hyperplastic ? neoplastic ? metastatic
c) Normal ? hyperplastic ? dysplastic ? metastatic ? neoplastic
d) Normal ? neoplastic ? dysplastic ? hyperplastic ? metastatic
Answer: a) Normal ? hyperplastic ? dysplastic ? neoplastic ? metastatic
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Which of the following does not occur during RNA processing?
A. the addition of a nucleotide cap to the 5' end of the newly transcribed RNA B. the addition of a poly(A) tail to the 3' end of the newly transcribed RNA C. the removal of all exons during RNA splicing D. the removal of all introns during RNA splicing E. the degradation of excised RNA
Where is a ganglion found?
a. brain
b. spinal cord c. peripheral nervous system d. brain stem e. interneurons
Four of the five organisms listed below belong to the same monophyletic group.
a. Amoeba proteus b. euglenoids c. plasmodial slime molds d. cellular slime molds e. Entamoeba histolytica
Refer to Figure 44-2. Which cell type is the source of antibodies?
a. A only b. B only c. C only d. D only e. both A and B