The σ54-RNA polymerase binds to the glnA promoter but does not melt the DNA strands and initiate transcription until it is activated by

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#Question id: 3735

#Unit 3. Fundamental Processes

The best enzyme to use in the Sanger method for DNA sequence determination is

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#Question id: 11537

#Unit 7. System Physiology – Animal

Testosterone is an example of a chemical signal that affects the very cells that synthesize it, the neighboring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.

 I) an autocrine signal

 II) a paracrine signal

 III) an endocrine signal

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#Question id: 10767

#Unit 8. Inheritance Biology

Chi square test is used to verify

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#Question id: 15338

#Unit 4. Cell Communication and Cell Signaling

Which cell generated on the receipt of SCF/c-Kit signaling lose the capacity for extensive self-renewal, but retain the potential to differentiate into several different hematopoietic lineages and also transiently express the molecule CD34?

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#Question id: 13085

#Unit 13. Methods in Biology

The most common microsatellite sequence encountered in human genome is the sequence