Homework Answers
The answers are
1. The lac operon of E.coli contains polycistronic mRNA, which is carries information for the synthesis of several proteins.
2. DNA replication requires that the bonds between nucleotides of the two strands break required for the proper synthesis of DNA molecules.
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Answer these two questions carefully please
Question 3 Which of the following is true of the...
The following activity will give you practice with the two operons we discussed - the lac...
The following activity will give you practice with the two operons we discussed - the lac operon and the trp operon. Below are two scenarios to consider. You will need to determine whether or not transcription is occurring and describe what is happening in the cell using our operon vocabulary words - regulatory gene, RNA polymerase, operator, promoter, repressor, and genes. 1. Bobby Joe just enjoyed an In and Out milkshake, how will the E. coli in her stomach respond?...
The following activity will give you practice with the two operons we discussed - the lac...
The following activity will give you practice with the two operons we discussed - the lac operon and the trp operon. Below are two scenarios to consider. You will need to determine whether or not transcription is occurring and describe what is happening in the cell using our operon vocabulary words - regulatory gene, RNA polymerase, operator, promoter, repressor, and genes. 1. Bobby Joe just enjoyed an In and Out milkshake, how will the E. coli in her stomach respond?...
3. The CAP activator protein and the Lac repressor both control the Lac operon (see Figure...
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...
The gene machine program shows you what happens when lactose is present in E. coli, and...
The gene machine program shows you what happens when lactose is present in E. coli, and how the lac operon is under negative control. However, the lac operon is also under positive control from a protein called CRP, eAMP Receptor Protein. The absence of the lac repressor is essential but not sufficient for effective transcription of the lac operon. RNA polymerase also depends on the presence of CRP. Like the lac repressor, which can bind to the DNA and lactose....
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...
Please help me with this question and if you can explain why. Which of the following...
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...
Fill in the blanks in the following sentences by selecting from the drop-down menus. When E.coli...
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...
all them please Question 23 (1 point) The A and B alleles in ABO blood types...
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....
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...
26. The lac operon in E. coli consists of genes that code for enzymes necessary for...
26. The lac operon in E. coli consists of genes that code for enzymes necessary for the breakdown of lactose. When lactose is absent, the operon is inactive because a repressor protein binds to a specific site in the lac operon. When lactose is present, lactose molecules bind to the repressor protein, causing the repressor protein to dissociate from the binding site. In the absence of glucose (a preferred energy source for bacteria), the protein CAP binds to a regulatory...
The following activity will give you practice with the two operons we discussed - the lac operon and the trp operon. Below are two scenarios to consider. You will need to determine whether or not transcription is occurring and describe what is happening in the cell using our operon vocabulary words - regulatory gene, RNA polymerase, operator, promoter, repressor, and genes. 1. Bobby Joe just enjoyed an In and Out milkshake, how will the E. coli in her stomach respond?...
The following activity will give you practice with the two operons we discussed - the lac operon and the trp operon. Below are two scenarios to consider. You will need to determine whether or not transcription is occurring and describe what is happening in the cell using our operon vocabulary words - regulatory gene, RNA polymerase, operator, promoter, repressor, and genes. 1. Bobby Joe just enjoyed an In and Out milkshake, how will the E. coli in her stomach respond?...
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...
The gene machine program shows you what happens when lactose is present in E. coli, and how the lac operon is under negative control. However, the lac operon is also under positive control from a protein called CRP, eAMP Receptor Protein. The absence of the lac repressor is essential but not sufficient for effective transcription of the lac operon. RNA polymerase also depends on the presence of CRP. Like the lac repressor, which can bind to the DNA and lactose....
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...
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...
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...
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....
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...
26. The lac operon in E. coli consists of genes that code for enzymes necessary for the breakdown of lactose. When lactose is absent, the operon is inactive because a repressor protein binds to a specific site in the lac operon. When lactose is present, lactose molecules bind to the repressor protein, causing the repressor protein to dissociate from the binding site. In the absence of glucose (a preferred energy source for bacteria), the protein CAP binds to a regulatory...
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