Making a Protein

ReplicationReplication is the

process of copying DNA for new cells

Steps in Replication

1)The DNA unzips2)Free floating nitrogen bases come in and match up with the exposed nitrogen bases3)Free floating sugar and phosphates come in and finish the sides of the DNA.4)Two identical DNA strands are made

Team Check Answer the following questions in your journal….

1. Where does replication occur?

2. Why does DNA need to replicate?

3. How many strands of daughter DNA make from one parent DNA?

4. List the steps in DNA replication.

Transcription Using DNA to make RNA

RNA is…

* Ribonucleic Acid

* Single Stranded

* Has Uracil (U) instead of

Thymine (T)

TranscriptionUsing DNA to make

RNA

Steps in Transcription1)DNA unzips2)RNA nitrogen bases bond to the exposed DNA bases3)Sugar and Phosphates bond to complete the sides of the mRNA.4)The new mRNA releases and goes into the cytoplasm

Team Check Answer the following questions in your journal….

1. Where does transcription occur?

2. What is the name of the RNA that is made from DNA?

3. List the steps in transcription.

4. List three ways that RNA is DIFFERENT from DNA.

Translation

Reading the RNA and creating a protein

Steps in Translation1)RNA travels to the cytoplasm where a ribosome attaches to it.2)tRNA reads the RNA strand by threes “CODON”3)tRNA adds nitrogen bases to the RNA strand. Each set of 3 nitrogen bases codes for an amino acid4)The amino acids string together to form a protein

Team Check Answer the following questions in your journal….

1. Where does translation occur?

2. What is the name of the RNA that brings the amino acids?

3. A set of three nitrogen bases is called a _______.

Protein Practice

1. Copy the DNA strand into your journal. 2. Transcribe the strand in mRNA.3. Translate the strand using tRNA.4. List the amino acids that are strung together to create

a protein.

DNA = A T G C G G T G AmRNA = tRNA = Amino Acid =