Biology, 07.03.2020 04:31, salterappraisal5757
After transcription begins, several steps must be completed before the fully processed mRNA is ready to be used as a template for protein synthesis on the ribosomes. Which three statements correctly describe the processing that takes place before a mature mRNA exits the nucleus?1. A translation stop codon is added at the 3' end of the pre-mRNA.2. A cap consisting of a modified guanine nucleotide is added to the 5' end of the pre-mRNA.3. A poly-A tail (50-250 adenine nucleotides) is added to the 3' end of the pre-mRNA.4. Coding sequences called exons are spliced out by ribosomes.5. Noncoding sequences called introns are spliced out by molecular complexes called spliceosomes.
Answers: 3
Biology, 23.06.2019 00:00, goforthmusic235
Match each type of short-term climate change with its definition
Answers: 2
After transcription begins, several steps must be completed before the fully processed mRNA is ready...
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