AP bio chapter 14 protein synthesis

A particular triplet of base in the template strand of DNA is 5' AGT 3' the corresponding codon for the mRNA transcribed is

3' UCA 5'

the genetic code is essentially the same for all organisms. for this, one can logically assume which of the following

A gene from a organism can theoretically be expressed by any other organism

a particular triplet of base in the coding sequence of DNA is AAA. the anticodon of the tRNA that binds the mRNA codon is

UUU

of the following which is the most current description of a gene

a DNA sequence that is expressed to from a functional product either RNA or a polypeptide

Which small-scale mutation would be most likely to have a catastrophic effect on the functioning of a protein?

a base deletion near the start of a gene

Accuracy is the translation of mRNA into the primary structure of a polypeptide depends on specificity in the

bonding of the anticodon to the codon and the attachment of amino acids to tRNA

which of the following types of mutation results in the error in the mRNA just after the AUG start of translation is likely to have the most serious effect on the polypeptide product

deletion of 2 nucleotides

A frameshift mutation could result from

either an insertion or a deletion of a base

What is the effect of a nonsense mutation in a gene?

introduces a premature stop codon into mRNA

which of following best describes the significance of the tata box in eukaryotic promoters

it is the recognition site for a specific transcription factor

Why might a point mutation in DNA make a difference in the level of a protein's activity?

it might substitute a different amino acid to the active side

a eukaryotic transcription unit that is 8000 nucleotides long many use 1200 nucleotides to make a protein consisting of approximately 400 amino acids. this is best explained by the fact

many noncoding stretches of nucleotides are present in eukaryotic DNA

which of the following experimental procedures is most likely to hasten mRNA degradation in a eukaryotic cell

removal of the 5' cap

Transcription in eukaryotes requires which of the following in addition to RNA polymerase?

several transcription factors

There are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that

the rules for base pairing between the third base of a codon and tRNA are flexible