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14% of the DNA nucleotides from a certain organism contain T. What amounts of the other bases would you expect to be present in this particular DNA?
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14% A, 36% C, 36% G
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A deoxyribose nucleotide is a
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Deoxyribose plus a nitrogenous base and a phosphate
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Double stranded DNA looks a little like a ladder that has been twisted into a helix, or spiral. Ths side supports of the ladder are
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Alternating sugars and phosphates
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The strands that make up DNA are antiparallel. This means that
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The 5' to 3' direction of one strand is counter to the 5' to 3' direction of the other strand
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Why is RNA incorporated into the DNA molecule during DNA replication
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DNA polymerases can only add on to an existing strand
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One stand of DNA has the sequence 5'-ATTCCG-3' the complementary strand for this is
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5'-CGGAAT-3'
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Semiconservative replication of DNA involves
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Each of the original strands acting as a template for a new strand
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In bacteria, the enzyme that removes the RNA primers is called
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DNA polymerase 1
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Amino Acids are transported to the ribosome for use in building the polypeptide by
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TRNA molecules
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The nucleotide sequence of mRNA codon is composed of how many bases
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3
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Protein synthesis takes place on
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Ribosomes
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Ribosome movement along the mRNA transcript is called
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Translation
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Eukaryotic mRNA molecules are occasionally interspersed with non-coding sequences that must be removed before protein synthesis. These are called
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Introns
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Transciption in prokaryotes is carried out by the enzyme____, which unwinds and transcribes the gene.
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RNA polymerase
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In eukaryotes, the empty RNA molecules exit the ribosome from the
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E site
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