If Dam methylase is overproduced in E. coli would you expect it to have any effect...
Homework Answers
Overproduction of Dam methylase in E. Coli leads to an increased mutation rate because newly synthesized DNA becomes methylated before it can be correted and thus it leads to mutation in chromosome.
Add Answer to:
If
Dam methylase is overproduced in E. coli would you expect it to
have any effect...
1. On which plate(s) would you expect to find bacteria most like the E. coli on...
1. On which plate(s) would you expect to find bacteria most like the E. coli on the source plate? Explain. 2. On which plate(s) would you find only genetically transformed bacterial cells? Why? 3. What is the purpose of the control plates? Explain the difference between the controls and why each one is necessary. 4. Why would one compare the -DNA/+Amp and DNA/+Amp plates?
In order to maximize production of a human enzyme by E. coli during cloning, would you...
In order to maximize production of a human enzyme by E. coli during cloning, would you use an E.coli promoter or human promoter to synthesize the enzyme mRNA in E. coli cells? Briefly, why?
How much would you have to dilute 1x108 E. coli cells/ml so that when you plate...
How much would you have to dilute 1x108 E. coli cells/ml so that when you plate 200µl you obtain 200 E. coli cells on a LB Agar plate?
QUESTION 2 What qualitative effect would you expect each of the following to have on the...
QUESTION 2 What qualitative effect would you expect each of the following to have on the Pso of hemoglobin? Explain. a. Increase in pH from 7.2 to 7.4 b. Increase in Pco, from 20 to 40 mm Hg c. Dissociation into monomer polypeptide chains d. Decrease in 2,3-BPG concentration from 7 mM to 5 mM in red cells.
13. The rate of B-galactosidase synthesis in E. coli is influenced by the bacteria's genotype and...
13. The rate of B-galactosidase synthesis in E. coli is influenced by the bacteria's genotype and its growth conditions. Indicate whether you would expect the rate of β-galactosidase synthesis to increase, decrease, or remain the same after each of the following changes to the growth medium. Explain your answer. a. E. coli cells are cultured in minimal medium containing glycerol as the sole b. E. coli cells are cultured in minimal medium containing glucose as the sole c. E. coli...
You set up a transformation hoping that a strain of E. coli will take up a...
You set up a transformation hoping that a strain of E. coli will take up a plasmid containing an ampicillin resistance gene, making the strain able to grow on LB + amp. To see if the transformation worked, you set up four plates: (1) Untransformed E. coli cells on LB plate (2) Untransformed E. coli cells on LB + amp plate (3) Transformed E. coli cells on LB plate (4) Transformed E. coli cells on LB + amp plate. Your...
You have systematically mutagenized the lac operon in E. coli to produce a mutation that disrupts...
You have systematically mutagenized the lac operon in E. coli to produce a mutation that disrupts the function of each of the following elements: a. the promoter for LacI (P(I)) b. the LacI gene c. CRP binding site d. the promoter for the lac operon (P(lac)) e. the operator sequence f. a mutation in lacZ that disrupts the coding region but does not disrupt transcription g. a mutation in lacZ that blocks transcription For each of the above mutations, what...
1) Describe the similarities and differences between the lac operon in E. coli and the GAL...
1) Describe the similarities and differences between the lac operon in E. coli and the GAL system in yeast. 2) What effect does mutation at nucleotides within a silencer element have on the expression of the gene associated with the silencer? Why does it have this effect?
Would you expect an amorphous piece of solid polyethylene (PE) to be isotropic or anisotropic? Briefly...
Would you expect an amorphous piece of solid polyethylene (PE) to be isotropic or anisotropic? Briefly explain............(2 points) Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases. What is this structure called? What kind of effect does this structure have on the melting point of the alloy and why? (5 points)
2a. (4 pts) A potent mutagen was added to an E. coli culture growing in rich...
2a. (4 pts) A potent mutagen was added to an E. coli culture growing in rich broth. Prior experiments established that this F cell line, designated WWU113, could not synthesize leucine. You are interested in measuring the rate of induced reverse mutation. You plan to grow a liquid culture of the leu strain and then plate various dilutions of the culture onto selective media. What media should you use to grow up the liquid culture? This will be Media A...
1. On which plate(s) would you expect to find bacteria most like the E. coli on the source plate? Explain. 2. On which plate(s) would you find only genetically transformed bacterial cells? Why? 3. What is the purpose of the control plates? Explain the difference between the controls and why each one is necessary. 4. Why would one compare the -DNA/+Amp and DNA/+Amp plates?
QUESTION 2 What qualitative effect would you expect each of the following to have on the Pso of hemoglobin? Explain. a. Increase in pH from 7.2 to 7.4 b. Increase in Pco, from 20 to 40 mm Hg c. Dissociation into monomer polypeptide chains d. Decrease in 2,3-BPG concentration from 7 mM to 5 mM in red cells.
13. The rate of B-galactosidase synthesis in E. coli is influenced by the bacteria's genotype and its growth conditions. Indicate whether you would expect the rate of β-galactosidase synthesis to increase, decrease, or remain the same after each of the following changes to the growth medium. Explain your answer. a. E. coli cells are cultured in minimal medium containing glycerol as the sole b. E. coli cells are cultured in minimal medium containing glucose as the sole c. E. coli...
Would you expect an amorphous piece of solid polyethylene (PE) to be isotropic or anisotropic? Briefly explain............(2 points) Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases. What is this structure called? What kind of effect does this structure have on the melting point of the alloy and why? (5 points)
2a. (4 pts) A potent mutagen was added to an E. coli culture growing in rich broth. Prior experiments established that this F cell line, designated WWU113, could not synthesize leucine. You are interested in measuring the rate of induced reverse mutation. You plan to grow a liquid culture of the leu strain and then plate various dilutions of the culture onto selective media. What media should you use to grow up the liquid culture? This will be Media A...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago