Microbial Genetics

Which is the correct order of events when a protein is made in the process of translation?

Initiation, elongation, termination

Donor and recipient bacterial cells are connected by the sex pilus during ___

conjugation

A ___ binds to an inactive repressor to make an active repressor.

corepressor

Proteins that remove incorrect bases and replace them with correct ones are termed ____ repair enzymes.

excision

DNA sequences found within a gene that do not encode the protein corresponding to the gene

introns

a permanent inheritable alteration in the DNA sequence of a cell

mutation

complete set of chromosomes and genes in an organism is referred to as the

genome

Several DNA viruses are known to be initiators of cancers and are thus termed ___

oncogenic

another term for genetics--the study of inheritance in living things

heredity

During semiconservative ___ the DNA is duplicated prior to binary fission.

replication

The protein product of a repressor gene is the ___ which binds the operator to stop transcription.

repressor

Which type of mutation is due to random mistakes in replication?

spontaneous mutation

Which of the following are functions of RNA polymerase?

- synthesizes an RNA molecule from DNA template - unwinds the DNA so that transcription can take place

The first three events of translation in the correct order are ___, ___, ___ followed by protein folding and processing.

initiation, elongation, termination

The protein product of a repressor gene is the ___ which binds the operator to stop transcription. Listen to the complete question

repressor

DNA polymerases are responsible for

- building the DNA chain - proofreading/repair

What is the name of the specialized plasmid that directs conjugation in gram-negative cells?

F factor

In bacterial conjugation, which type of donor has the fertility factor integrated into the chromosome?

Hfr

DNA polymerase ___ is the main enzyme involved in the building of the new DNA chain, whereas DNA polymerase ___ is involved mostly with removing the primers and repairing damaged DNA. Multiple choice question.

III/I

The main enzyme responsible for transcription is ___

RNA polymerase

Genetic transfer of ____ to a methicillin-resistant Staphylococcus aureus (MRSA) strain produces vancomycin resistant enterococci (VRE).

a transposon containing the vanA operon

Uracil, the nitrogenous base unique to RNA molecules, pairs with the nitrogenous base ___

adenine