Exam 13: Bacterial Genome Replication and Expression

A bacterial __________ is the nontranscribed region of the DNA to which RNA polymerase binds in order to initiate transcription.

On mRNA molecules,a nontranslated sequence called the ___________ usually precedes the initiation codon.

The Y-shaped part of the DNA molecule where the actual replication process occurs is called the replication __________.

DNA replication is a complex process,and as a result the frequency of error is quite high.

Bacterial chromosomes,unlike eukaryotic chromosomes,often consist of a single replicon.

The strand of DNA for a particular gene that is copied by the RNA polymerase to form mRNA is called the __________ strand.

Which of the following is not considered the final product of the expression of a gene?

The chromosomes of most bacteria are comprised of

As prokaryotes normally only have one set of genes,they are called __________.

The stop codons are translated codons; that is,they specify amino acids to be inserted into the last position of a growing polypeptide chain.

The unexpressed regions of split genes are called

Proteins that recognize unfolded polypeptides and help them fold into their proper conformations are called ______________.

The basic differences between RNA and DNA reside in their sugar and pyrimidine bases; RNA has ribose and uracil whereas DNA has deoxyribose and thymine.

The two strands of a DNA molecule are __________; that is,they are oriented in opposite directions.

The __________ reaction sequentially links adjacent amino acids into the growing polypeptide chain.

The genetic code is said to be __________ because more than one codon will specify a particular amino acid.

The coding sequence in the DNA of __________ is normally continuous; that is,it is not interrupted by noncoding sequences.

The genetic code is translated in groups of __________ bases.

The __________ describes the specific set of genes an organism possesses.

How many different termination codons are used in translation?