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DNA to mRNA

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mRNA is transcribed from DNA, carrying information for protein synthesis. Three consecutive nucleotides in mRNA encode an amino acid or a stop signal for protein synthesis (see Genetic Code). The trinucleotide is know as a codon.

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MRNA

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MRNA

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AYYYE

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Protein synthesis

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Protein synthesis - Science at Benicia Middle School with Mrs. Tuttle

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MRNA

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what enzyme helps the process of separating weak hydrogen bonds?

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Enzyme that put together the nitrogen bases

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RNA Nucleotide

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What Is DNA Polymerase?

Our body is composed of millions of cells that contain their own copy of our DNA. The amazing thing is that we all started out as one cell with the original copy of our DNA. From that one cell, other cells were produced, and each received a copy of the DNA. So, how did this amazing thing happen? Well, just before a cell splits into two cells, the DNA is copied in a process known as DNA replication. There is replication machinery which includes the enzyme DNA polymerase. DNA polymerase has the responsibility of creating new copies of our DNA. Let's take a closer look at how this happens.

Function of DNA Polymerase

Before DNA polymerase can start copying the DNA, it has to have access to the nucleotide bases that compose the DNA. Our DNA is made of two strands of DNA that are connected to each other by hydrogen bonds. As you may recall, our DNA is normally in the double-helix formation, which looks a lot like a winding staircase. In order for the nucleotides to be exposed, DNA helicase comes in and unwinds the DNA by breaking the hydrogen bonds that hold the two strands together.

This allows the nucleotides on both strands of DNA to be read and used as templates by DNA polymerase. The next thing that has to happen is that an RNA primer attaches complementary nucleotide bases, which starts the process of replication on both strands. An RNA primer is essentially just a short strand of RNA bases, usually around 20 bases long, that is needed by DNA polymerase to start replication.

Now DNA polymerase is ready to go to work. DNA polymerase will use the template strands as a guide to attach the bases that are complementary on the newly synthesized strand of DNA. The nucleotides are added to the 3'OH end of the previous nucleotide.

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dna polymerase: definition & function - video & lesson transcript | study.com

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DNA Polymerase: Definition & Function - Video & Lesson Transcript | Study.com

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Our body is composed of millions of cells that contain their own copy of our DNA. The amazing thing is that we all started out as one cell with the original copy of our DNA. From that one cell, other cells were produced, and each received a copy of the DNA.

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amino acid and proteins - destiny vargas

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Every human being shares 99% of their DNA with every other human.

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Amino acids

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A self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information. 

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A self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information. 

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They are the directions for building all the proteins that make our body function- Kenneth Gil

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They are the directions for building all the proteins that make our body function- Kenneth Gil

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http://learn.genetics.utah.edu/content/basics/dnacodes/images/dnatoprotein.jpg

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Protein synthesis is the process whereby biological cells generate new proteins. -Valerie