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Carbon-Based Molecules
Carbon-Based Molecules

... Carbon has unique bonding properties  Carbon = building block of life because it makes ...
Chapter 17 - Madeira City Schools
Chapter 17 - Madeira City Schools

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CH 13
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... Although some organisms show slight variations in the amino acids assigned to particular codons, the code is always read three bases at a time and in the same direction. Despite their enormous diversity in form and function, living organisms display remarkable unity at life’s most basic level, the m ...
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2009 WH Freeman and Company
2009 WH Freeman and Company

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REVIEW Protein Synthesis with Analogies

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Lecture 2: Biological Side of Bioinformatics
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Mutations - KingsfieldBiology

...  Any change to the quantity or structure of DNA of an organism is known as a mutation.  Mutations can occur in either somatic cells (body cell) and germ cells (those that produce the gametes (these can be passed on!)).  Changes in the structure or number of a whole chromosome is know as a chromos ...
jan4
jan4

... 4. Which ribosome (A or B) has the shorter nascent polypeptide? 5. Which end of the polypeptide (amino or carboxy) has not yet been synthesized? ...
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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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