What is the effect of UV radiation on bacterial growth and how do things such as...
What is the effect of UV radiation on bacterial growth and how do things such as duration of exposure contribute to the growth patterns. Also, what is a possible experiment you could perform to re-confirm or validate your expectations?
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What is the effect of UV radiation on bacterial growth
and how do things such as...
and Lab Exer n this experiment you will evaluate effect of UV light on bacterial growth. UV light affects growth by interfering with DNA, resulting in thymine dimer formation. The dimerization...
and Lab Exer n this experiment you will evaluate effect of UV light on bacterial growth. UV light affects growth by interfering with DNA, resulting in thymine dimer formation. The dimerization is confined within adjacent thymine residues on same strand (intrastrand ). These dimmer lesions have consequence on DNA functions including interference in DNA replication, transcription etc, so UV exposure of cells can lead to lethal effects for bacterial multiplications. This forms the basis for UV method to control bacterial...
In Experiment 1, why is exposure to UV radiation an effective method of controlling bacterial growth?...
In Experiment 1, why is exposure to UV radiation an effective method of controlling bacterial growth? A. It damages DNA, inhibiting transcription and replication. B. It causes the cell membrane to rupture. C. It creates ions that damage biomolecules. D. It raises the temperature, killing temperature sensitive bacteria.
Results A. Effect of UV Radiation Record the results for each plate at follows (see images...
Results A. Effect of UV Radiation Record the results for each plate at follows (see images below): (-) no growth 1+ light growth 2+ medium growth 3+ heavy growth Also, note any differences in appearance of growth on cach of the plates. 15 30 60 ates) Bacteria Lid off UV light exposure time Lid off Lid off Lid off 15 sec 30 sec 60 sec O sec Lid on 60 sec (control) Serratia marcescens Based on these results, answer the...
Please complete all questions (1-5). For question 5, construct a x-y scatter plot graph with UV...
Please complete all questions (1-5). For question 5, construct
a x-y scatter plot graph with UV exposure time on x-axis and amount
of growth (0,1,2,3) on Y axis. use a different color or symbol per
organism and DO NOT connect the dots. Thank you!
answer questions 1-4 please.
2-12 The Effect of Ultraviolet Radiation on Microbial Growth OBSERVATIONS AND INTERPRETATIONS 1 Enter your class data in the table below using the following descriptions: 0 - no growth 1 individual colonies...
1. What component of a bacterial cell is injured by UV radiation? a. Cell wall b....
1. What component of a bacterial cell is injured by UV radiation? a. Cell wall b. Plasma membrane c. Ribosomes d. DNA Answer 2. Should everyone be sure to protect their eyes and skin from UV radiation? a. Yes b. No Answer 3. Which of the bacteria we are using in this lab is an endospore former? a. E. coli b. Bacills (cereus or subtilis) Answer 4. What is the purpose of using a 24 hour culture and 7 day...
Electromagnetic Waves UV Radiation Some of us are all too familiar with the ill- effects of...
Electromagnetic Waves UV Radiation Some of us are all too familiar with the ill- effects of over-exposure to ultraviolet (UV) electromagnetic radiation, namely, sunburns (solar erythema). UV radiation can kill the skin cells immediately below the surface (part of the epidermal layer). Over the course of several minutes or several hours, as enough skin cells are killed or damaged, the body's natural immune response is triggered. The body responds to the damage with increased blood flow to the capillary bed of...
How do antibiotics and antibiotic resistance influence bacterial growth curve and how will you make sure...
How do antibiotics and antibiotic resistance influence bacterial growth curve and how will you make sure that the antibiotics that you take do not lead to resistance?
Below is a figure of a typical bacterial growth curve. Use this to answer the questions...
Below is a figure of a typical bacterial growth curve. Use this to answer the questions below. Log Cell number 6. What stage is labeled A? 7. Name two things that are happening at the genetic and/or molecular level in the cell at this stage if cells in stationary phase were transferred from a media containing glucose to one containing lactose. 8. If the culture used to generate the growth curve above was started with 300 bacterial cells (generation 0),...
What things can a researcher do to try to increase the magnitude of the d effect...
What things can a researcher do to try to increase the magnitude of the d effect size? Suppose that you can increase the d effect size while holding group sizes n1 and n2 constant. How will an increase in d influence the magnitude of t ?
1)Discuss two things you could do in a lab setting to determine which type of substitution...
1)Discuss two things you could do in a lab setting to
determine which type of substitution reaction took place. Be
specific and explain each experiment. Discuss what outcomes you
would expect from your design.
Consider the reaction scheme shown below. Sn1 or SN2 + Nuc Substitution Product (S) solvent rate single enantiomer (optically active) Discuss two things you could do in a typical undergraduate lab to experimentally determine which type of substitution reaction took place. Be specific and briefly explain...
and Lab Exer n this experiment you will evaluate effect of UV light on bacterial growth. UV light affects growth by interfering with DNA, resulting in thymine dimer formation. The dimerization is confined within adjacent thymine residues on same strand (intrastrand ). These dimmer lesions have consequence on DNA functions including interference in DNA replication, transcription etc, so UV exposure of cells can lead to lethal effects for bacterial multiplications. This forms the basis for UV method to control bacterial...
In Experiment 1, why is exposure to UV radiation an effective method of controlling bacterial growth? A. It damages DNA, inhibiting transcription and replication. B. It causes the cell membrane to rupture. C. It creates ions that damage biomolecules. D. It raises the temperature, killing temperature sensitive bacteria.
Results A. Effect of UV Radiation Record the results for each plate at follows (see images below): (-) no growth 1+ light growth 2+ medium growth 3+ heavy growth Also, note any differences in appearance of growth on cach of the plates. 15 30 60 ates) Bacteria Lid off UV light exposure time Lid off Lid off Lid off 15 sec 30 sec 60 sec O sec Lid on 60 sec (control) Serratia marcescens Based on these results, answer the...
Please complete all questions (1-5). For question 5, construct
a x-y scatter plot graph with UV exposure time on x-axis and amount
of growth (0,1,2,3) on Y axis. use a different color or symbol per
organism and DO NOT connect the dots. Thank you!
answer questions 1-4 please.
2-12 The Effect of Ultraviolet Radiation on Microbial Growth OBSERVATIONS AND INTERPRETATIONS 1 Enter your class data in the table below using the following descriptions: 0 - no growth 1 individual colonies...
1. What component of a bacterial cell is injured by UV radiation? a. Cell wall b. Plasma membrane c. Ribosomes d. DNA Answer 2. Should everyone be sure to protect their eyes and skin from UV radiation? a. Yes b. No Answer 3. Which of the bacteria we are using in this lab is an endospore former? a. E. coli b. Bacills (cereus or subtilis) Answer 4. What is the purpose of using a 24 hour culture and 7 day...
Below is a figure of a typical bacterial growth curve. Use this to answer the questions below. Log Cell number 6. What stage is labeled A? 7. Name two things that are happening at the genetic and/or molecular level in the cell at this stage if cells in stationary phase were transferred from a media containing glucose to one containing lactose. 8. If the culture used to generate the growth curve above was started with 300 bacterial cells (generation 0),...
1)Discuss two things you could do in a lab setting to
determine which type of substitution reaction took place. Be
specific and explain each experiment. Discuss what outcomes you
would expect from your design.
Consider the reaction scheme shown below. Sn1 or SN2 + Nuc Substitution Product (S) solvent rate single enantiomer (optically active) Discuss two things you could do in a typical undergraduate lab to experimentally determine which type of substitution reaction took place. Be specific and briefly explain...
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