Exam 13: Bacterial Genome Replication and Expression

Each chromosome has one or more __________ site(s)where replication begins.

The noncoding sequences located between the start codon and the stop codon in interrupted genes are called introns.

All prokaryotes initiate the synthesis of proteins with formylmethionine.

________ molecules deliver amino acids to ribosomes during translation.

The B form of the DNA double helix contains a wider major groove and a narrower minor groove because the two polynucleotide strands are not positioned directly opposite one another in the helical cylinder.

Which of the following is true about the structure of DNA?

The transcribed and translated region of a gene is the __________ region.

Over twisting or under twisting of helical DNA generates

What is the minimum number of aminoacyl-tRNA synthetase enzymes needed to attach amino acids to all the various tRNA molecules?

Which of the following is in the coding region of a gene?

Which of the following nitrogenous bases is usually found in RNA but not in DNA?

A section of DNA that codes for a protein or other functional product is called a(n)

Which of the following is not a pyrimidine?

Which of the following is not a complementary base pair usually found in DNA molecules?

Hershey and Chase demonstrated that when the bacteriophage T2 infected its host cell,the __________ is injected into the host but the __________ remained outside.

Aminoacyl-tRNA synthetases catalyze covalent addition of __________ __________ to tRNAs.

During replication the 2 strands of the DNA molecule are unwound from one another by enzymes called

When RNA polymerase catalyzes the addition of a nucleotide to a growing mRNA chain,a byproduct of this reaction is

Key sequences exist within promoters,which vary somewhat among various promoters but are sufficiently constant that they can be represented by a sequence of bases most often found at each position.These representations are called __________ sequences.

The process by which the base sequence of an RNA molecule is used to direct the synthesis of a protein is called