What protein influences the ability of RNA polymerase to transcribe genes?
A. snRNPs
B. DNA polymerases
C. DNA helicases
D. tRNA
E. transcription factors
Answer: E
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Saponin, polypropylene glycol, SPS, and ethylenediaminetetraacetic acid (EDTA) are all components in which blood culture system?
a. BACTEC system b. BacT/ALERT system c. ESP system d. Lysis centrifugation system
The respiratory system exchanges which gases?
A. Carbon dioxide is inhaled, while oxygen is exhaled. B. Both oxygen and carbon dioxide are inhaled, and only carbon dioxide is exhaled. C. Oxygen is inhaled and exhaled, the gas exchange does not include carbon dioxide. D. Oxygen is inhaled, while carbon dioxide is exhaled.
With ____, individual cells can be coaxed to divide and form embryos in a laboratory
a. in vitro fertilization b. sexual reproduction c. tissue culture propagation d. vegetative reproduction e. grafting
Which one of the following statements about RNA processing is true?
A) Exons are cut out before mRNA leaves the nucleus. B) Ribozymes may function in RNA splicing. C) RNA splicing can be catalyzed by tRNA. D) A primary transcript is often much shorter than the final RNA molecule that leaves the nucleus.