Operons - Study guides, Class notes & Summaries

nif cluster a genetically linked and coordinately regulated group of operons encoding genes required for nitrogen fixation What is the EBP for nif genes? NifA How does the activity of NifA differ from that of NtrC? The unmodified form of NifA is active NtrC needs to be phosphorylated to be active Under what 2 conditions does nif transcription occur? 1) Only in the absence of a fixed nitrogen source 2) Only if oxygen concentration not high enough to damage nitrogenase 2 What are th...

In bacteria, the sequence of bases in DNA that contains a promoter and one or more structural genes and often an operator or activator-binding site that controls their expression - Answer operon 1. A mechanism for the regulation of transcription termination of some bacterial operons by aminoacyl-tRNAs. 2. A procedure that reduces or abolishes the virulence of a pathogen without altering its immunogenicity - Answer attenuation

fimbriae/pili, afimbrial adhesins correct answers mechanisms of adhesion to host surfaces adhesins at tip that bind to specific glycoproteins/glycolipids on host cell membranes, long major filament that can extend beyond the capsule correct answers main features of pili/fimbriae molecules embedded in bacterial membranes, bind to glycoproteins or glycolipids on host membranes or can bind ECM such as fibronectin correct answers main features of afimbrial adhesins tracheal colonization fac...

locus correct answers any piece of DNA allele correct answers one or more alternative form of a gene dominance correct answers an allele masks the variation another allele produces linkage correct answers genes controlling two traits are located next to each other on a chromosome and they tend to me inherited with each other transcription correct answers making a copy of DNA to RNA translation correct answers turning RNA to a protein Why do cells in the body looks so different ...

MIBO 3500 Exam 3 Scott UGA Questions With Verified Solutions | Latest Updates With Rationales Archaeal phylogeny - ANSWER Difficult to culter & PCR Genomes are recombinogenic classifications are frequently under revision Archaeal Cell Wall does not have peptidoglycan but has - ANSWER pseudopeptidogylcan The archaea Cell wall stains - ANSWER gram positive or negative the archaeal cell wall has NAG and no NAM but - ANSWER NAcetyltasamunyronic acid T/F the archaeal cell wall is NOT ...

The order of priority for transmission of messages in the aeronautical service is: correct answers 1. Distress communications. 2. Urgency communications. 3. Communications relating to radio direction-finding. 4. Flight safety messages. 5. Meteorological messages. 6. Flight regularity messages. 7. Messages relating to the application of the United Nations Charter. 8. Government messages for which priority has been expressly requested. 9. Service communications relating to the workings of ...

Which is the purpose of transfer RNA? - to bring amino acids to the ribosomes to be assembled into proteins During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase? - transcription Which occurs during transcription? - mRNA is synthesized from a strand of DNA. What must first occur for transcription to begin? - RNA polymerase attaches to the promoter. Which does not occur during translation? - DNA is transcribed into a complementary strand of mRNA. Fra...

Prokaryote Can make multiple proteins from one operon Eukaryote -They have operons if they have a plastid or mitochondria -Operon like features have been found in organisms like yeast -Gene regulation in eukaryotic cells takes place at multiple levels transcriptional control Operon A unit made up of linked genes which is thought to regulate other genes responsible for protein synthesis Mus Musculus The most important model organism in human genetics Model for human diseases Immunogeneti...

Regulation of nitrogen fixation exam questions and answers nif cluster - Answer- a genetically linked and coordinately regulated group of operons encoding genes required for nitrogen fixation What is the EBP for nif genes? - Answer- NifA How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of NifA is active NtrC needs to be phosphorylated to be active Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence of a fixed nitrog...

Regulation of nitrogen fixation exam questions and answers nif cluster - Answer- a genetically linked and coordinately regulated group of operons encoding genes required for nitrogen fixation What is the EBP for nif genes? - Answer- NifA How does the activity of NifA differ from that of NtrC? - Answer- The unmodified form of NifA is active NtrC needs to be phosphorylated to be active Under what 2 conditions does nif transcription occur? - Answer- 1) Only in the absence of a fixed nitrog...