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info 3.4
potential questions for 3.4
Question | Answer |
---|---|
cells full complement of proteins. | proteome |
a functional segment of DNA that provides the genetic information necessary to build a protein. | gene |
which transforms the information coded in a gene to a final gene product, ultimately dictates the structure and function of a cell by determining which proteins are made. | Gene expression |
are polymers, or chains, of many amino acid building blocks. | proteins |
a section of three DNA bases in a row that codes for a specific amino acid. | triplet |
single-stranded nucleic acid that carries a copy of the genetic code for a single gene out of the nucleus and into the cytoplasm where it is used to produce proteins. | messenger RNA (mRNA) |
which is the synthesis of a strand of mRNA that is complementary to the gene of interest. | transcription |
a three-base sequence of mRNA, so-called because they directly encode amino acids. | codon |
—a particular sequence of nucleotides | promoter |
enzyme that adds new nucleotides to a growing strand of RNA. | RNA polymerase |
removes non-coding regions from the pre-mRNA transcript | splicing |
—a structure composed of various proteins and other molecules/attaches to the mRNA and “splices” or cuts out the non-coding regions. | spliceosome |
removed segment of the transcript | intron |
a segment of RNA that remains after splicing. | exon |
the process of synthesizing a chain of amino acids called a polypeptide | Translation |
The substrate on which translation takes place is the | ribosome. |
a type of RNA that, together with proteins, composes the structure of the ribosome. | Ribosomal RNA (rRNA) |
a type of RNA that ferries the appropriate corresponding amino acids to the ribosome, and attaches each new amino acid to the last, building the polypeptide chain one-by-one. | Transfer RNA (tRNA) |
This sequence of three bases on the tRNA molecule is called an | anticodon |
a string of ribosomes translating a single mRNA strand. | polyribosome |