Lac operon Study guides, Class notes & Summaries

CBE 235 FinalLac 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 transcribed Gregor Mendel Experiment - correct a...

19.1 Discuss why beneficial mutations are rare & suggest a process that beneficial mutations underpin (4 MARKS) - ️️Majority of mutations are silent (1); idea that random change to protein structure is more likely to reduce function (1); idea that beneficial mutations increase chances of survival if environment changes (1); surviving organisms reproduce and pass new alleles to offspring (1); leading to evolution (1) 19.1 Outline why majority of mutations do not have an influence phenotype (...

BIO 111 FINAL EXAM QUESTIONS AND ANSWERS LATEST 2024/2025 (100% CORRECT) What is the first mRNA processing step? - ANSWER 5' capping Different mRNAs are made from the same initial pre-mRNA by ________. - ANSWER alternative splicing RNA transcription begins at a ________. - ANSWER promoter ________ protect(s) the pre-mRNA molecule. - ANSWER the 3' poly-a tail The process of pre-mRNA splicing removes ________. - ANSWER introns Spliced ________ differ in their exons. - ANSWER mRNAs Identif...

Final Exam- Lac Operon With Complete Solutions 2023

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...

In depth summary of the lac operon content covered

An alteration in the DNA from an AT base pair to a CG base pair is called a ___. - Answer-Transversion An alteration in the DNA from an CG base pair to a TA base pair is called a ___. - Answer-Transition Which repair mechanism(s) involve(s) the removal of a single nucleotide? - Answer-Proofreading repair; base excision repair An insertion of a single base pair in the DNA strand is called a ___ mutation. - Answer-Frameshift Which repair mechanism(s) involve(s) the removal of several nucleoti...

QBM Exam Questions And Answers With Complete Solutions 2024 What are the first three steps for starting a project? - answer1 ) Choose 2) Read literature 3) Obtain DNA sequence Once you obtain the DNA sequence in the beginning of a project, BLAST will allow what? - answer"Basic Local Alignment Search Tool" - To search for homology (duplication events) - Can predict protein, molecular weight, pI, and extinction coefficient - Predict the secondary/tertiary structure, transmembrane helice...

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...

Micro 201 Exam 3 (3) - Lac Operon With Complete Solutions 2023