Bio Ch. 12
What molecule indirectly provides the energy for translation?
ATP
The amino acids of a growing polypeptide chain are held together by what kind of bond during the elongation stage of translation?
peptide
Transcription begins near a site in the DNA called the ______.
promotor
What molecule(s) exhibits self-splicing?
rRNA and tRNA
More than one codon can specify the same amino acid.
true
RNA polymerase II of eukaryotes always requires more than one general transcription factor to initiate transcription.
true
The molecule mRNA, which contains the information to make a polypeptide, is constructed from a DNA template
true
The termination of translation occurs when a release factor recognizes the stop codon.
true
Evaluate the reasons ribosomal genes are useful for comparing evolutionary relationships among organisms?
because all organisms posses these genes and can be compared with each other
The most common eukaryotic ribosome carries out its function in the
cytosol
The processes of transcription and translation are collectively known as
gene expression
Intervening sequences that are transcribed, but not translated into protein are called
introns
The process that produces mRNA from DNA is called
transcription
What protein influences the ability of RNA polymerase to transcribe genes?
transcription factors
How many nucleotides are contained in a single codon?
3
A single gene always encodes for an enzyme.
false
As part of the transcriptional unit, regulatory sequences are the sites where RNA polymerase and transcription factors bind to regulate transcription.
false
In eukaryotes, 40S and 60S combine to form a 100S ribosome.
false
The cells of every organism make only a few different tRNA molecules encoded by the same gene.
false
Translation is a relatively slow process.
false
tRNA contains the genetic code for producing a polypeptide.
false