These are the sections of the Lac operon.
I is the repressor, O the operator, Z is the lac Z gene
please explain what the / means? I understand what I+O+Z+ means but I don't understand what I+O+Z+/Oc means. I don't understand what the / means in general if you can explain.
Homework Answers
Normally the bacteria in which lac operon is present are haploid organisms. But sometimes the organism where lac operon is present may be a partial diploid. This condition is called a merozygote. Thus the alleles which are written before / represents the allelic configuration of one chromosome and the alleles written after the symbol / denotes the alleles which are present on its homologous chronosome.
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These are the sections of the Lac operon.
I is the repressor, O the operator, Z...
If the operator is mutated, how would the lac operon be affected under the condition that...
If the operator is mutated, how would the lac operon be affected under the condition that lactose is absent? The lac i repressor would bind to the operator and the operon is on The lac i repressor would not bind to the operator and the operon is on The lac i repressor would bind to the operator and the operon The lac i repressor would not bind to the operator and the operon is off
In the lac operon, 1 codes for the repressor protein, P is the promoter which is...
In the lac operon, 1 codes for the repressor protein, P is the promoter which is necessary for binding RNA polymerase, O is the operator, and Z codes for the B-galactosidase. Assuming (+) denotes the wild type for a particular locus, (-) denotes a lack of a particular gene product or function, O^c is a constitutive operator, and I^s is a super repressor. Use a "+++" sign to indicate that significant quantities of functional B-galactosidase are present, a '+' sign...
For each region of the lac operon on the F' plasmid, I+ P+ Oc Z− Y+...
For each region of the lac operon on the F' plasmid, I+ P+ Oc Z− Y+ , determine whether the region is wild type (that is, it produces a functional protein or it's a correct protein binding sequence) or whether the region is mutated. Select all that apply. Select all that apply. The promoter sequence is correct/functional. The repressor protein is produced. The operator sequence is correct/functional. Beta-galactosidase is produced from the lacZ gene. Permease is produced from the lacY...
In the lac operon, what are the likely effects on operon transcription of the mutations listed...
In the lac operon, what are the likely effects on operon transcription of the mutations listed below? PLEASE EXPLAIN your answers. I think I answered the first part of the question but need help explaining why. Mutation of the consensus sequence in the lac promoter. i. Transcription is blocked. Mutation of the repressor binding sites in the operator sequences. i. Transcription is constitutive. Mutation of the lacI gene affecting the allosteric site of the protein. i. Transcription is blocked. Mutation...
Lactose (or rather, its derivative allolactose) can lift the Lac Repressor protein from the Operator site...
Lactose (or rather, its derivative allolactose) can lift the Lac Repressor protein from the Operator site in DNA, thus allowing for expression of the genes coded by the Lac Operon. However, lactose cannot cross the bacterial cell membrane without the help of the Permease protein channel, which is coded by the lacY gene in the Lac Operon. So, it appears that we have a case of "what's first, the chicken or the egg?" - how can lactose enter the cell...
for 1-5 define those The Lac operon is an inducible set of genes found in bacteria...
for
1-5 define those
The Lac operon is an inducible set of genes found in bacteria cells that helps the bacteria to metabolize the disaccharide lactose. When it is turned on it produces proteins that pump lactose into the bacteria cell and break it down into glucose and galactose, which can then be used by the bacteria as a source of energy The two figures below show the Lac Operon along with the lacl gene (which regulates the Lac operon...
In this problem you will explore how to solve problems involving partial diploid lac operon bacterial...
In this problem you will explore how to solve problems involving partial diploid lac operon bacterial strains. Bacterial strains that are "partially diploid" have two copies of the lac operon because they aquired a plasmid carrying just the lac operon region. One copy of the lac operon region is on the recipient's bacterial chromosome, and the other copy is on the P plasmid that was introduced into the cell by conjugation. Partial diploid genotypes are written with the P segment...
The lac operon contains three genes: lacZ, lacY, and lacA for β‑galactosidase, galactoside permease, and thiogalactoside transacetylase, respectively.
The lac operon contains three genes: lacZ, lacY, and lacA for β‑galactosidase, galactoside permease, and thiogalactoside transacetylase, respectively. The operon also contains a promoter site and an operator site. The regulatory gene includes the I gene for the Lac repressor protein and a promoter for that gene.The lac operon undergoes negative regulation. In the normal condition, the Lac repressor protein is active. Allolactose, an isomer of lactose, is the signal molecule that binds to the Lac repressor. Determine which events...
The lac operon consists of a promoter that initiates transcription of the gene i, which encodes...
The lac operon consists of a promoter that initiates
transcription of the gene i, which encodes a repressor protein. A
seperate promoter, p, within the operon initiates transcription of
z, which encodes B-galactosidase, and y, which encodes permease.
The operator, o, where the repressor protein binds to inhibit
transcription, is positioned between mutations, whereas superscript
c denotes a constitutively active mutant. The table below sea fives
the activity of B-galatosidase and permease for haploid and diploid
mutant strains. Match the...
a) For the lac operon, will the repressor or RNA polymerase be bound to the operon in this situation? Draw what wil...
a) For the lac operon, will the repressor or RNA polymerase be bound to the operon in this situation? Draw what will be happening on the operon below. PROMOTER OPERATOR Lactose Enzyme 1 Lsctose Enzyme2 Lactose Enzyme 3 NO b) Will transcription occur? c) Describe what is happening (with vocabulary words). YES 2. Bobby Joe is fasting today, how will the E. coli in her stomach respond to the lack of Tryptophan? a) For the trp operon, will the repressor...
If the operator is mutated, how would the lac operon be affected under the condition that lactose is absent? The lac i repressor would bind to the operator and the operon is on The lac i repressor would not bind to the operator and the operon is on The lac i repressor would bind to the operator and the operon The lac i repressor would not bind to the operator and the operon is off
In the lac operon, 1 codes for the repressor protein, P is the promoter which is necessary for binding RNA polymerase, O is the operator, and Z codes for the B-galactosidase. Assuming (+) denotes the wild type for a particular locus, (-) denotes a lack of a particular gene product or function, O^c is a constitutive operator, and I^s is a super repressor. Use a "+++" sign to indicate that significant quantities of functional B-galactosidase are present, a '+' sign...
for
1-5 define those
The Lac operon is an inducible set of genes found in bacteria cells that helps the bacteria to metabolize the disaccharide lactose. When it is turned on it produces proteins that pump lactose into the bacteria cell and break it down into glucose and galactose, which can then be used by the bacteria as a source of energy The two figures below show the Lac Operon along with the lacl gene (which regulates the Lac operon...
In this problem you will explore how to solve problems involving partial diploid lac operon bacterial strains. Bacterial strains that are "partially diploid" have two copies of the lac operon because they aquired a plasmid carrying just the lac operon region. One copy of the lac operon region is on the recipient's bacterial chromosome, and the other copy is on the P plasmid that was introduced into the cell by conjugation. Partial diploid genotypes are written with the P segment...
The lac operon consists of a promoter that initiates
transcription of the gene i, which encodes a repressor protein. A
seperate promoter, p, within the operon initiates transcription of
z, which encodes B-galactosidase, and y, which encodes permease.
The operator, o, where the repressor protein binds to inhibit
transcription, is positioned between mutations, whereas superscript
c denotes a constitutively active mutant. The table below sea fives
the activity of B-galatosidase and permease for haploid and diploid
mutant strains. Match the...
a) For the lac operon, will the repressor or RNA polymerase be bound to the operon in this situation? Draw what will be happening on the operon below. PROMOTER OPERATOR Lactose Enzyme 1 Lsctose Enzyme2 Lactose Enzyme 3 NO b) Will transcription occur? c) Describe what is happening (with vocabulary words). YES 2. Bobby Joe is fasting today, how will the E. coli in her stomach respond to the lack of Tryptophan? a) For the trp operon, will the repressor...
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