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Bio 5th ch 38

QuestionAnswer
Protein synthesis The process of producing a protein in the cell, how genetic information flows from DNA the messenger RNA (mRNA) to protein in the cell. This takes place in 3 stages. 1. Initiation. 2. Transcription. 3. Translation
Initiation When a gene needs to be expressed, the enzyme DNA gyrase unwinds the section that contains the gene needed. The enzyme, DNA helicase, breaks down the hydrogen bonds in this section, separating the two strands.
Transcription DNA can’t leave the nucleus as it is too big to fit through pores. RNA nucleotides are free floating in the nucleus and connect to form mRNA in a process called transcription
Translation The process of converting the mRNA to a protein is called translation. Translation takes place in the ribosomes of the cytoplasm. These synthesis proteins that will be moved outside the cell.
Where does DNA replication begin DNA replication begins before mitosis and at the end of the interphase and it takes place in the nucleus
Name the enzyme involved in transcription and explain their role RNA polymerase, attaches free DNA nucleotides to the template strands
Name the three types of RNA associated with protein synthesis mRNA, rRNA (ribosomal RNA), tRNA (Transfer RNA)
Created by: Louie Masterson
 

 



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