Bio Transcription

Biology transcription.
Titin is the longest known protein which is responsible for the elasticity of muscles.
Transcription is a step of gene expression in which a segment of DNA is copied into RNA.
Translation is the process of protein synthesis from the information coded in a gene.
A promoter is a special sequence that defines where the transcription is going to begin, and the TATA box helps enzyme find the site to bind on the strand (CrashCourse, 2018).
Upstream
Downstream
RNA polymerase works in the 3’ to 5’ direction.
Uracil is the mRNA equivalent of thymine.
The termination signal stops mRNA from transcribing.
5’ cap and poly-A tail are the enzymes added to the ends of mRNA
RNA splicing is the process of removing non-coding parts of the mRNA right before the mRNA leaves the nucleus (CrashCourse, 2018).
Exons
Introns
After splicing the mRNA leaves the nucleus and goes to the ribosomes for translation.
Ribosomal ribonucleic acid (rRNA)
Transfer ribonucleic acid (tRNA)
A codon is a group of three nitrogenous bases coding for a single amino acid
AUG
Anticodon is the complementary sequence of a codon found on the tRNA
Translation starts at the 5’ end.
The codon that starts translation is AUG with the anticodon of UAC that codes for methionine
For UUA the anti-codon is AAU which codes for Leucine
For AGA the anti-codon is UCU which codes for arginine
Six different codons code for arginine. This is good since a few errors in the processes of transcribing or translating will not change the product.

Polypeptide chain

Reference
CrashCourse. (2018). DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology [Video File]. Retrieved from https://www.youtube.com/watch?v=itsb2SqR-R0&feature=youtu.be.