Write a single sentence, using no more than 25 words, to summarize each of the following cellular processes:

e. Transcription

Video transcript

Hey, everyone. Let's take a look at this question together. What is the initial prerequisite that precedes the synthesis of complementary RN A molecules in the transcription process? Is it answer choice. A the presence of termination sequence in the strand? Answer choice B the unwinding of the DNA double helix. Answer choice C the removal of introns and joining of exxons or answer choice D the addition of a seven methyl guanosine cap. Let's work this problem out together to try to figure out which of the following answer choices is that initial prerequisite which precedes the synthesis of complementary RN A molecules in the transcription process. So in order to solve this question, we have to recall what is required in the synthesis of complementary RN A molecules or transcription to occur to determine what is the initial prerequisite that occurs before the synthesis of those RN A molecules. And we have to recall the process of transcription, which we can recall that the process of transcription, which includes a DNA strand that is copied to make RN A molecules requires the use of a single DNA strand. And we know that the DNA strand is a double helix. So in order for transcription to occur, that double helix has to be separated into two individual strands. And we can recall that the double helix unwinds with the use of the enzyme DNA hela case. So DNA heli case unwinds the DNA strand to separate the DNA strands into single DNA strands from that double helix, allowing RN A poly rays to access the single DNA strand in order to synthesize those RN A strands and allow transcription to occur. Therefore, the initial prerequisite that precedes the synthesis of complementary RN A molecules or the process that must occur before RN A polymerase can access the single strand is the unwinding of the double helix of DNA. So answer choice B, the unwinding of the DNA double helix is the correct answer. Since the DNA double helix must be separated into single strands allowing RN A polymerase to access the single strand and synthesize those complementary RN A molecules. So answer choice B is the only correct answer. Choice. I hope you found this video to be helpful. Thank you and goodbye.