________ nucleotides are common second messengers in animal cells
Fill in the blank with correct word.
Answer: Cyclic
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Which of the following represents a blind study?
A. The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do. B. Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected. C. The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected. D. The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.
Because peptidoglycan lies outside the plasma membrane, all steps in the complex synthesis process of this molecule takes place outside the cell.
Answer the following statement true (T) or false (F)
You are attempting to synthesize rRNA in a test tube using DNA isolated from mouse cells. In addition to the template DNA, ribonucleotides, and the necessary transcription factors, you should also add ________ to the test tube.
A. RNA polymerase III B. RNA polymerase II C. poly-A polymerase D. RNA polymerase I
A restriction enzyme that uses a six (6 ) base recognition sequence will cut DNA, on average, every ________ bases, if all four nucleotides are present in equal proportions
A) 4096 B) 256 C) 5000 D) 500 E) 1296