Cell Biology Day 20

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Author:
Jacqui
ID:
306261
Filename:
Cell Biology Day 20
Updated:
2015-08-11 00:05:59
Tags:
Biology
Folders:
Biology
Description:
Day 20 of cell biology glossary
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  1. Activated precursor
    Energised forms of monomers (or building blocks) used to make a polymer. For example ATP is an activated precursor used in RNA synthesis.
  2. Exon
    A coding region of a eukaryotic gene. Exons, which are expressed, are separated from each other by introns.
  3. gene expression
    The whole process of transcription and translation
  4. Intron
    A noncoding, intervening sequence within a eukaryotic gene.
  5. Promoter
    A specific nucleotide sequence in DNA that binds RNA polymerase and indicates where to start transcribing RNA.
  6. RNA polymerase
    An enzyme that links together the growing chain of ribonucleotides during transcription.
  7. Spliceosome
    A spliceosome is a large and complex molecular machine found primarily within the splicing speckles of the cell nucleus of eukaryotic cells. The spliceosome is assembled from snRNAs and protein complexes. The spliceosome removes introns from a transcribed pre-mRNA, a kind of primary transcript.
  8. splicing
    The most sophisticated type of RNA processing, known as splicing, occurs during the processing of eukaryotic mRNAs. Splicing occurs in RNA, NOT proteins, genes and/or DNA.
  9. Template strand
    The DNA strand that provides the template for ordering the sequence of nucleotides in an RNA transcript.
  10. Transcription
    The synthesis of RNA on a DNA template.
  11. Translation
    The synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. There is a change of "language" from nucleotides to amino acids.

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