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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Transcription |
The enzyme-catalyzed assembly of an RNA molecule |
Complementary to a strand of DNA Product may be messenger RNA, transfer RNA, or ribosomal RNA |
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RNA polymerase |
An enzyme that catalyze a the assembly of an RNA molecule |
Joins RNA nucleotides according to the base sequence in DNA Prokaryotes have one type of RNA polymerase.RNA processing |
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RNA processing |
When the RNA copy of a protein encoding gene is modified. |
It has to be modified in many different ways before moving out of the nucleus. |
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Intron |
A segment of DNA that is transcribed into precursor messenger DNA. |
Removed before the mRNA leaved the nucleus. Do not code for protein. |
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Exon |
A segment of DNA that is transcribed into RNA and translated into protein. |
Specifies the amino acid sequence of a polypeptide. Remain in the nucleus after introns are removed. |
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Splicing |
The process that joins exons after introns are removed. |
The joining of two pieces of DNA. Requires precise recognition of the site to be cut. |
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Translation |
The assembly of a protein on ribosomes. |
Uses messenger RNA to direct the order of amino acids. Happens with protein synthesis. |
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Tertiary structure |
The 3D folded structure of a polypeptide or protein molecule. |
Complex folding Not the first level of organization. |
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Translational error |
An error in the translation of RNA. |
Most errors are caught and corrected. Usually result from misreading the nucleotide sequence. |
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Frame shift mutation |
The insertion or deletion of one or more nucleotides in a gene. |
Causes disruption of the reading frame. Change every subsequent codon. |
