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... Evidence from NASA mission to Mars indicates the planet has features similar to Earth that include volcanoes, deserts, canyons, ridges, valleys, and polar ice caps. Evidence from recent missions indicates that some surface features on Mars were formed from water. ...
CELL CHEMISTRY QUESTIONS 1. - Queensland Science Teachers
CELL CHEMISTRY QUESTIONS 1. - Queensland Science Teachers

... 22. Different types of cells have different proteins. How can this be used to identify cell types? 23. Is every protein composed of all possible amino acids? Explain. 24. Why are some amino acids called essential amino acids? 25. What are some of the many functions of proteins? 26. Nucleic acids are ...
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Protein Synthesis - mvhs

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02_-_translation___mutation_intro - Ms.Holli
02_-_translation___mutation_intro - Ms.Holli

... Ile = Isoleucine Leu = Leucine Lys = Lysine Met = Methionine Phe = Phenylalanine Pro = Proline Ser = Serine Thr = Threonine Trp = Tryptophan Tyr = Tyrosine Val = Valine ...
Protein Synthesis
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... 17. UAG is a stop codon. What might happen if the uracil in this codon was changed to cytosine? Glutamine would have been added to the polypeptide chain. 18. List the four different sets of DNA nucleotide sequences that code for the amino acid Valine. Explain why this redundancy in the genetic code ...
Regulation of gene expression: Prokaryotic
Regulation of gene expression: Prokaryotic

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protein synthesis

... mRNA READS: CAG UUC GUU CUA AUG Translation occurs ...
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... There are three main differences between RNA and DNA:  The sugar in RNA is ribose, the sugar in DNA is deoxyribose.  RNA is single stranded, DNA is double stranded.  RNA contains uracil (U) DNA contains thymine (T) ...
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DNA and Protein Synthesis

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DNA and Protein Synthesis PowerPoint
DNA and Protein Synthesis PowerPoint

... Proteins are the workhorses of the cell. They build all of the important structures and carry on most of the important cellular functions.  What types of proteins are made determine everything about the organism and how it functions. ...
2016_Heinrich-Wieland-Preis Schultz_PM_eng
2016_Heinrich-Wieland-Preis Schultz_PM_eng

... DNA using just four letters: A, C, G, and T – short for the bases adenine, cytosine, guanine, and thymine. They spell out 64 different three-letter words, the codons. With three of them not coding for an amino acid and thus functioning as stop signals, DNA can code for 61 different amino acids. Howe ...
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... translated into so many different amino acids? • The same way 26 letters of the alphabet can be translated into so many words. – ape – pea The four letters of RNA are put together in different combinations to form many different “words” –A U C G ...
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For teachers: Get four colours of beads or rubber bands. You can
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... 1. Read letters left to right in sets of three 2. Each three-letter code corresponds to an amino acid, such as “Leu” (see key) 3. T = U in the key* ...
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Gene Finding in Prokaryotes

... AGGAGG) that is present in the 5'untranslated region of prokaryotic mRNAs. • This sequence serves as a binding site for ribosomes and is thought to influence the reading frame. • If a subsequence aligning well with the ShineDalgarno sequence is found within 4-18 nucleotides of an ORF’s start codon, ...
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Protein Synthesis

... nucleus (take the code to ribosome) 3. mRNA tells ribosomes what proteins to make 4. mRNA attaches to ribosome and forms a pattern (codon) to make a protein 5. tRNA in cytoplasm comes to ribosome. It “translates” the code (codon=three base pairs) and goes and gets the specific amino acid that matche ...
Chapter 25: Molecular Basis of Inheritance
Chapter 25: Molecular Basis of Inheritance

... from the last tRNA by a release factor. A newly synthesized polypeptide may function alone or become part of a protein. ...
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Genetic code



The genetic code is the set of rules by which information encoded within genetic material (DNA or mRNA sequences) is translated into proteins by living cells. Biological decoding is accomplished by the ribosome, which links amino acids in an order specified by mRNA, using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms and can be expressed in a simple table with 64 entries.The code defines how sequences of these nucleotide triplets, called codons, specify which amino acid will be added next during protein synthesis. With some exceptions, a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. Because the vast majority of genes are encoded with exactly the same code (see the RNA codon table), this particular code is often referred to as the canonical or standard genetic code, or simply the genetic code, though in fact some variant codes have evolved. For example, protein synthesis in human mitochondria relies on a genetic code that differs from the standard genetic code.While the genetic code determines the protein sequence for a given coding region, other genomic regions can influence when and where these proteins are produced.
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