What is required for formation of the transcription initiation complex in eukaryotes?
A. binding of a transcription factor to the TATA box, followed by recruitment of additional transcription factors and recruitment of RNA polymerase II
B. binding of a transcription factor to the transcription bubble, followed by recruitment of additional transcription factors and recruitment of RNA polymerase III
C. binding of the sigma subunit to the start site followed by recruitment of RNA polymerase II
D. binding of RNA polymerase II to the TATA box, followed by recruitment of transcription factors
E. binding of the sigma subunit to promoter elements at -35 and -10, followed by recruitment of the core polymerase
A. binding of a transcription factor to the TATA box, followed by recruitment of additional transcription factors and recruitment of RNA polymerase II
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The discrepancy between the number of microbial cells observed by microscopic examination and the number of colonies that can be cultivated from the same natural sample may be due to ________.
A. microbial motility B. incorrect culture conditions C. nonviable organisms D. nonviable organisms and incorrect culture conditions
The morphological species concept would relate more to
a. prezygotic isolation. b. postzygotic isolation. c. both prezygotic and postzygotic isolation d. neither prezygotic nor postzygotic isolation e. it would depend on the species used for the study
what does neutrophil phagocytosis of fungi do?
What will be an ideal response?
Which biome is characterized by plants whose
leaves turn color and drop off in the autumn? a. coniferous forest b. tundra c. temperate deciduous forest d. tropical rain forest e. all of these