You have 2 strains of bacteria. One is resistant to ampicillin and the other is resistant to spectinomycin. You mix together the 2 live strains, and to your knowledge, no phages are present in the mixture. After several hours, you plate the mixture on agar plates containing both ampicillin and spectinomycin and get several colonies of bacteria resistant to both antibiotics.Based on the information given, what is the most likely mechanism that has produced the strain now carrying both genetic markers?

_______ has a segmented RNA genome.

The genomic RNAs of the negative RNA viruses can be infectious once they get into permissive host cells.

If you want to make a fusion protein linking your protein of interest to a protein tag (e.g. GFP), you must remove _____ between the DNA sequences that code for the two proteins.

Which of the following techniques can be used to study protein-protein interactions? 1. Northern Blot 2. Yeast 2 hybrid 3. Phage dispaly 4. PCR 5. Sanger sequencing

Which statements are true?1- Electron carriers are located at ribosomes.2- ATP is a common intermediate between catabolic and anabolic pathways.3- ATP is used for the long-term storage of energy and so is often found in storage granules.4- Anaerobic organisms are capable of respiration.5- ATP can be generated by the flow of protons across the cell membrane.

Genes for which of the following functions would be constitutively expressed in a bacterial cell?

A retrovirus must have which of the following enzymes?

An inducer ligand binds to a repressor and causes it to fall off the operator DNA,permitting transcription of an operon. What will happen to the transcription ofstructural genes in each of the following scenarios? 1. If the repressor is mutated so that it cannot bind to the inducer ligand but can bind to the DNA.a. no transcription; b. constitutive transcription 2. The repressor is mutated so that it cannot bind to the DNA but can bind to theinducer ligand.a. no transcription; b. constitutive transcription. 3. The operator is mutated so that it cannot bind to the repressor.a. no transcription; b. constitutive transcription.

The virions (viral particles) of all animal viruses contain _______.