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2. When transcribing an mRNA strand, RNA polymerase uses the strand of DNA to match complementary bases with. RNA polymerase

6. Using the answers to questions 2-5 and the below DNA sequence, predict the mRNA sequence, the tRNA anticodons, and the ami

7. You are interested in a gene that codes for a 20 amino acid-long protein. (1.5 points) a. What is the minimum number of nu

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Answer #1

Question 2:

Answer: DNA consists of two strands, coding strand and non-coding strand. The coding strand base sequence corresponds to mRNA sequence produced. it is presented in 5' to 3' direction. non-coding strand is presented in 3' to 5' direction and used as template strand to produce mRNA during transcription. RNA polymerase enzyme binds to the template stand and synthesis mRNA in 5' to 3' direction.

Hence, when transcribing an mRNA strand RNA polymerase uses template strand/non-coding stand of DNA to match complementray bases with. RNA polymerase always read this strand in 3' to 5' direction and always builds the mRNA in 5' to 3' direction.

Question 3

The +1 site is an initiation site on the DNA from which transcription begins and first RNA nucleotide is transcribed.

Question 4

Answer: When translating mRNA, ribosomes binds to ribosomal binding site of mRNA and begins translation at the start codon (ATG codes for methionine).

Question 5

Answer: When translating mRNA, stop codons in the mRNA signals ribosomes to end translation. termination factros release the growing polypeptide chain. No tRNA is found to be involved in termination.

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