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- Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter. This signals the DNA to unwind so the enzyme can ‘‘read’’ the bases in one of the DNA strands. The enzyme is now ready to make a strand of mRNA with a complementary sequence of bases.
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Initiation (promoters), elongation, and termination. Key points: Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the main transcription enzyme.
1) Initiation. After RNA polymerase binds to the promoter, the DNA strands unwind, and the polymerase initiates RNA synthesis at the start point on the template strand. 2) Elongation. The polymerase moves downstream, unwinding the DNA and elongating the RNA transcripts 5' --> 3'.
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- Sal Khan
- It can replicate at about 50 base pairs per second, but there isn't actually a set time for a strand of DNA, because all DNA is different in length.
- Yes, it is. For some proteins implied in these processes, they are not the same but they are similar. The most obvious difference is that in the DN...
- Excellent question – this has puzzled molecular biologists for a long time. Enzymes can also be made from RNA (https://en.wikipedia.org/wiki/Ribozy...
- The 't' stands for *transfer* because tRNA transfers amino acids to ribosomes for protein synthesis.
- Similar to regular fingerprinting, DNA fingerprinting is a way to unique identify an individual. Although about 99.9% of DNA between two people are...
- The amino acid was brought over to the mRNA by a transport RNA (tRNA). There are loads of different types of amino acids (22 are used in your prote...
- "t" in tRNA means "transfer". It is fitting here because this type of RNA is responsible for transferring amino acids during translation.
- In a DNA molecule adenine pairs with thymine while in a RNA molecule adenine pairs with uracil. There are no uracil in DNA and no thymine in RNA.
- To start with, a cell doesn't have 61 types of tRNA, it usually has like 30-40. This can happen thanks to "wobbling", that means base pairing on 3r...
Summarize the relationship between proteins and genes. This worksheet shows a diagram of transcription and translation and asks students to label it; also includes questions about the processes.
Define transcription. ............................................................................................................................................................................... Transcription is the process by which an RNA sequence is produced from a DNA template (gene
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Aug 21, 2019 · The process of translation occurs in three main stages: 1. Initiation. The small unit of the ribosome binds to the start of the mRNA sequence, at the location of the start codon. In all mRNA molecules, the start codon has a sequence of AUG, which codes for the amino acid methionine.
Study with Quizlet and memorize flashcards containing terms like Messanger RNA (mRNA), Transfer RNA (tRNA), Ribosomal RNA (rRNA) and more.
Jul 31, 2022 · Step 1: Initiation. Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter. This signals the DNA to unwind so the enzyme can ‘‘read’’ the bases in one of the DNA strands.
