17.an allosteric protein is that type of protein in which multiple ligan-binding site some enzyme are allosteric protein and their activity is regulated through the binding of an effector to an allosteric site....and lc operon is not an allosteric protein..........18-between the promoter region and operator site
Hello! Please help with this genetics question! Question 17 (1 point) Which of the following is...
1) The lac operon is… a) Positive repressible b) Both negative inducible and positive repressible c) Positive inducible d) Negative inducible 2) An activator regulatory protein… a) Is involved in negative regulatory control b) Is a cis acting regulatory element c) Recruits RNA polymerase to the promoter d) Prevents RNA polymerase from binding the promoter 3) For the lac operon, the presence of the substrate (lactose) activates the repressor. True or False? a) true b) false 4) cAMP… a) Activates...
Fill in the blanks in the following sentences by selecting from the drop-down menus. When E.coli cells are grown in the presence of high glucose and high lactose, the lac repressor is not bound to the lac operator, CAMP levels in the cell are high and CAP is mostly bound to the CAP binding site in the lac promoter. Under these conditions, transcription of the lac operon Select When E.coli cells are grown in the absence of glucose and presence...
Answer these two questions carefully please
Question 3 Which of the following is true of the lac operon in E. coli? O The promoter is the binding site for the lac repressor ⓔ The lac operon messenger RNA is a polycistronic mRNA (it cames rformation for synthesis of several proteins) 0 The enzyme kalactosidase is only produced n large quantities when the lac repressor is bound to the operator. O The operon is only switched on in the absence of...
all them please
Question 23 (1 point) The A and B alleles in ABO blood types can give rise to an individual that is blog type AB. This specific blood type is an example of: A) multiple alleles B) epistasis C) codominance D) partial dominance Imagine the gene encoding the lac repressor was mutated so that lactose (more technically allolactose) no longer bound to the repressor. However, the lac repressor was still capable of binding DNA at the operator sequence....
gene regulation of bacteria operon systems. Protected View . Saved to this PG References Mailings Review View Help Tell me what you want to do ernet can contain viruses. Unless you need to edit, it's safe to stay in Protected View Enable Editing 5. What happens if lactose levels are low? Put the following list in order (1-5). RNA polymerase is blocked from transcribing the genes for the lactose metabolizing enzymes When RNA polymerase binds to the promoter, it cannot...
3. The CAP activator protein and the Lac repressor both control the Lac operon (see Figure 28-14). Fill out the table below with No expression, Low/Medium expression, or High expression to summarize when the Lac operon will be expressed in each of the three E. coli strains in the table. An example has been done for you. RNA polymerase- binding site (promoter) CAP binding site start site for RNA synthesis operator Lacz gene -80 -40 14080 nucleotide pairs Figure 08-14...
Which of the following features of the trp operon is most essential to the process of attenuation independent of the repressor protein? The order of the structural genes, E, D, C, B, A Allosteric modifications as a result of tryptophan binding. The operator sequence (trpO) The ability of sequences within the leader mRNA to pair with one another and form stem-lopp structures
Please help me with this
question and if you can explain why.
Which of the following statements are true for bacteria grown in the absence of glucose and absence of lactose? Select all that apply. High levels of cAMP CAP bound to CAP binding site Low or no levels of allolactose O High levels of lacZYA mRNA No transcription of lacZYA Lac repressor bound to operator CAP is not bound to binding site O High levels of allolactose Lac repressor...
Hello. I need some help with these genetics questions. Id grealty
appreciate the help!
Question 11 (1 point) An Of C) mutation results in O no transcription. inducible transcription. transcription but no translation. no translation constitutive transcription. Question 12 [1 point) What are the trans acting factors that control transcription in bacterial genes? cap. start codon, stop codon. O enhancers, Silencers, operator, promoter, polyadenylation signal 5 prime end of RNA, GU splice site, branch point. A. AG-splice site, polyadenylation signal...
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...