Transcription in prokaryotes is carried out by ______, which unwind(s) and transcribe(s) the gene.
A. RNA synthetase
B. RNA polymerase II
C. RNA polymerase III
D. transcription factors
E. RNA polymerase
E. RNA polymerase
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A cell that responds to an environmental condition by the release of a chemical is an example of which of the following elements of cellular communication?
A. a signaling cell B. a signaling molecule C. a receptor molecule D. a responding cell E. None of these choices is correct.
What is the name of the class of enzymes that will recognize a specific sequence of DNA and cut it?
A. DNA polymerases B. topoisomerases C. restriction endonucleases D. helicases E. primases
Which one of the following is TRUE regarding deoxyhemoglobin?
A) Deoxyhemoglobin delivers oxygen to tissues that have a high oxygen demand. B) Deoxyhemoglobin has a bright red color. C) Deoxyhemoglobin is found in blood returning to the heart from the lower extremities. D) Deoxyhemoglobin would form in organs with a high concentration of oxygen, such as the lungs. E) Deoxyhemoglobin is located in white blood cells, unlike oxyhemoglobin.
DNA replication occurs without errors due to the complementary base pairing used in the copying process
Indicate whether the statement is true or false