Lac operon - Guides d'étude, Notes de cours & Résumés

BIO 1A03 Test 2 Review (2023/2024) Already Graded A What is needed for prokaryote growth Nutrient-rich environment containing amino acids, carbohydrates, vitamins, nucleotides, favourable temperature housekeeping genes required all the time for vital functions Constitutively expressed includes structural proteins, ribosomal proteins, RNAP, DNAP allow for constant maintenance Regulated genes turned on/off when needed includes enzymes needed to channel growth/division Beta-Glalactosidase enzyme...

MileDown MCAT Biology Questions and Answers | Latest Update | 2024/2025 | 100% Verified What is the role of the myelin sheath in neural transmission? The myelin sheath insulates axons, allowing for faster transmission of electrical impulses along the neuron through saltatory conduction. Describe the process of endocytosis in cellular transport. Endocytosis is a process where the cell membrane engulfs extracellular material, forming a vesicle that brings the material into the ce...

Final Exam- Lac Operon With Complete Solutions 2023

Transcription of the lac operon is very high. - Answer-What is the phenotype of an E. Coli strain with a mutation in the lac operator that prevents the lac repressor from binding? Assume glucose is absent and lactose is present. Attenuation is a common regulatory strategy used to control the transcription of operons that code for: - Answer-Amino acid biosynthesis Phase variation of flagellar proteins in Salmonella enterica involves... - Answer-DNA rearrangements A quorum-sensing gene sy...

Why did DNA evolve to be the carrier of genetic information in cells as opposed to RNA? correct answersthe hydrogen at the 2' position in the deoxyribose of DNA makes it more stable than RNA In the mismatch repair process, enzyme complexes replace bases that were incorrectly inserted into the newly synthesized DNA strand. To function, they must be able to distinguish between the parent DNA strand and the new strand. How is this accomplished? correct answersthe parent strand is methylated ...

Draw out medically important bacteria Lac operon sequence lacl, codes for repressor, C-P-O, ZYA Example of a isoform tropomyosin, an actin filament binding protein 3 functions of RNAi naturally in body proliferation, differnetiation, apoptosis What is miRNA double stranded RNA with guide sequence, binds to mRNA and RISC to form RISC complex to degrade mRNA for gene regulation What is RISC RNA induced silencing complex Artifcial RNAi siRNA- short infererence RNAs Explain mRNA editin...

All of the following are characteristics that make plasmids good cloning vectors, except A. they are small B. they are well characterized C. they can be transferred into appropriate host cells D. they can carry genetic markers, such as antibiotic resistance genes E. they can accept a relatively large amount of foreign DNA Ans: E. they can accept a relatively large amount of foreign DNA Types of Plasmids: -Fertility Factors -Resistance Factors -Bacteriocin Factors -Virulence Plasmids ...

In depth summary of the lac operon content covered

operon - Answer a series of genes whose expression is co-regulated by controlling their common mRNA transcript lacZ gene - Answer structural gene in lac operon which codes for beta-galactosidase, to break down beta-galactosides (which includes lactose) into glucose and galactose lacY gene - Answer structural gene in lac operon which codes for permease, which transports beta-galactosides into the cell. permeases are membrane bound lacA gene - Answer structural gene in lac operon which co...

CBE 235 Final Question and answers rated A+ 2023/2024 Lac Operon - correct answer -involved in heating lactose: inducible operon 1) The lactose repressor protein coded by Lacl bound to the operator tightly near the mRNA start site, blocking the ability of RNA poly to bind 2) Lactose introduced--> Lac repressor binds to lactose and changes conformation such that it can no longer bond to the operator 3) RNA poly can access the promoter and transcription goes 4) LacZ,LacY,LacA are transcribe...