Ara operon - Samenvattingen, Notities en Examens

Alle vragen werden opgelost door het handboek, de slides en nota's uit de hoorcolleges te gebruiken. Alle vragen tot professor Ley werden behandeld, alsook begrippen.

Suppose that you made a special mutation in the laci protein that blocked its binding to allolactose but did not affect its ability to bind to laco. What effect would this mutation have on: A) the expression of the lac operon? B) the ability the cell to use lactose as carbon source? a. Eliminate expression because it will not be transcribed B. Unable to use lactose as a carbon source Positive control Operons -have poor promoters (absent -35 promoter) -need transcriptional activators to assist ...

what was function of incubation on ice - Incubation slows down the movement of the bilayer in cell. slows fluid cell membrane- fluid mosatic model what was the function of adding calcluim chloride - Addition of calcium chloride solutionthe calcium has a positive charger so it shields the negative phosphate in the nucliotide. You nutrelize it so it can go through the cell membrane because it is non polar. Adding the calcium chloride serves to shield the negative charge of DNA phosphate groups...

BIO 1404 Test 5 (CH. 15,16, and 21) The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? - Answer-degeneracy How many nucleotides are in 12 mRNA codons? - Answer-36 Which event contradicts the central dogma of molecular biology? - Answer-Scientists use reverse transcriptase enzymes to make DNA from RNA. Which subunit of the E. coli polymerase confers specificity to transcription? - Answer-σ The -10 and -35 regions of prokaryotic ...

The lac operon is expressed when - ANSWER glucose is low and lactose is absent When in a complex with ________, the CAP protein binds to the CAP site and ________ the expression of the lac operon. - ANSWER cAMP ; switches on In the absence of lactose, the lac repressor is - ANSWER active and can bind to the operator The inducer of the lac operon is an isomer of lactose. - ANSWER True When RNA polymerase is bound to the lac promoter sequence, transcription of the lac operon is on - AN...

Zie jij door de bomen het bos niet meer? Wat moet je kennen en wat niet? Ik begrijp de powerpoint niet? Klinkt herkenbaar? Hier is u oplossing. Een volledige samenvatting tot en met hoofdstuk 7 met figuren om alles nog extra duidelijker te maken.

Complete samenvatting van de moleculaire biologie lessen in course 5, studie jaar 2. De samenvatting is per week geschreven en is dus gebaseerd op de stof die behandeld is per les. De samenvatting is volledig en bevat alle stof die men dient de leren voor het moleculaire biologie gedeelte in de kennistoets. Tevens wordt de samenvatting ondersteunt door handige figuren die meer verduidelijking geven bij de tekst. In de samenvatting komen de volgende onderwerpen aan bod: - DNA, het genetische mate...