Lac operon - Study guides, Class notes & Summaries

TAMU bio 111 lab exam 2 review (2023/2024) already passed What is the difference between the coding and non-coding region? Coding region: comprised of genes that encode proteins (instructions that determine traits) and makes up 1-2% of human DNA. • Noncoding region: makes up 98-99% of human DNA, contains STRs and is responsible for regulatory functions such as gene transcription. What are STRs? Short-tandem repeats (STRs) are unique repeating patterns of the same nucleotide sequence. They can...

Please check the examination details below before entering your candidate information Candidate surname Other names Centre Number Candidate Number Pearson Edexcel Level 3 GCE Friday 16 June 2023 Morning (Time: 2 hours) Paper reference 9BN0/02 Total Marks Biology A (Salters Nuffield) Advanced PAPER 2: Energy, Exercise and Coordination You must have: Scientific calculator, pencil, ruler Instructions • Use black ink or ball-point pen. • Fill in the boxes at the top of this page wi...

ASU BIO 340 Exam 3 | WITH QUESTIONS AND ANSWERS 100% VERIFIED What will be the effect on transcription when an inhibitor is in play? A. Allow transcription B. Prevent transcription - B Explanation: An inhibitor prevents activator from binding to DNA; activators are used in positive regulation (increasing transcription) - thus, the inhibitor prevents the activator from positive regulating (increasing) transcription. What will be the effect on transcription when an inducer is in play? A. A...

Exam 3: BIO1201/ BIO 1201 (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: How are genes coordinately controlled in eukaryotic cells? Coordinately controlled genes in eukaryotic cells share a set of control elements. Coordinately controlled genes in eukaryotic cells are activated by the same chemical signals. Coordinately controlled genes in eukaryotic cells are located together on the same chromosome. Answer: Coordinately controlled...

True or False: Much research has been done on sRNAs (small noncoding RNA) and they have been extremely well-characterized for their function. FALSE TRUE/FALSE: A bacterium that can grow well on minimal medium is an example of a prototroph. TRUE Enzyme Acts as a catalyst for...to bring about a specific biochemical reaction Operon Clusters of genes and...under the control of a single promoter. Gratuitous inducer Activates genes but not be metabolized by the encoded enzymes Structural g...

Bio 115 WVU Final (Dr. Barry) Questions and Answers Graded A+ For e. coli , the lacl repressor gene is expressed when? The lacl repressor gene is always expressed Where does the lacl repressor gene attach The lacl repressor gene codes for a protein which attaches to the lac operon operator In the absence of lactose, does the lacl repressor gene bind to DNA Yes, in the absence of lactose, the lacl repressor gene binds to DNA preventing transcription; this is an example of negative...

negative regulation for the lac operon when ~ see a repressor positive regulation in lac operon when ~ camp cap what are camp cap and where to they bind? activator/repressor? trans/cis? pos/neg regulation? ~ operon, initiate transcription in absence of glucose. they are an activator. trans. and positive regulation restriction sites in normal genes ~ don't have them naturally, added through primers via PCR Predict what would happen if you swapped the location of the promoter and th...

Bio 115 Final Exam- WVU Questions and Answers Already Passed How can one eukaryotic gene lead to one transcript, but multiple different proteins? Alternative splicing What is the primary transcript of eukaryotic genes? mRNA What is the attachment site for RNA polymerase? Promoter region Gene regulation in both prokaryotes and eukaryotes is achieved by controlling which process? transcription A eukaryotic gene has all of the following except: introns, a promoter, an operator, ...

Biology 1000 – Principles of Biology ( BioS 115 Core II: Genetics) Exam Study Guide Questions With Answers. Explain the concepts of penetrance and expressivity Penetrance is the percentage of cases in which a certain phenotype is expressed. There are two types: i. Complete Penetrance: when 100% is correlated to the genotype. So, all express the same thing. ii. Incomplete: this is when some are identical, and others are different. Penetrance= # with genotype showing phenotype x 100 # wit...