The avian erythroblastosis virus contains an oncogene called erbB that encodes ___________.
a) an underexpressed nuclear protein
b) an elongated auxillary protein of the cytoskeleton
c) an altered insulin receptor that binds insulin with lower affinity
d) an altered transcription factor that turns on hemoglobin synthesis
e) an altered EGF receptor that is missing part of the extracellular domain that binds to the growth factor
Ans: e) an altered EGF receptor that is missing part of the extracellular domain that binds to the growth factor
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When step "d" is completed, the two DNA molecules produced will be
a. identical to each other but not to the parent DNA. b. identical to the parent DNA but not to each other. c. different from each other and the parent DNA. d. identical to each other and to the parent DNA. e. identical to each other and almost the same as the parent DNA.
Mottled, discolored skin pigmentation is observed in patients with tinea versicolor.
Answer the following statement true (T) or false (F)
Write a one-sentence explanation for the role of each of the following plant hormonelike signaling
molecules: methyl salicylate and jasmonic acid. What will be an ideal response?
Which of the following levels of organization includes all of the others?
A. Population B. Ecosystem C. Community D. Organism E. Habitat