Why make three different mRNAs that all produce the same protein?Discuss

1.Why make three different mRNAs that all produce the same protein?
2Exercise/Discussion topic: In the Nucleotide database, type in:

16S
RNA
16S RNA
“16S RNA”
16S AND RNA

What is the preferred phrase for 16S and RNA?

3.( MeSH)Try entering “aminotransferase.” What is the preferred term? Limit to the subheading “drug effects.” Now search PubMed. How many records?

4.Exercise/Discussion topic: List number of PubMed records:
smith j
smith j AND hopkins [AD]
smith j AND ohio [AD] AND state [AD]

What field does [AD] limit to? What might you miss by using this limit?

Explain what is meant by viral host range. Also address what factors affect a virus’ host range, and what is meant by tissue tropism.

1. How did Edward Jenner test and create the first vaccine? Describe the steps of this
process from observation to hypothesis to testing and finally, establishment of a theory.
(100 words or less) (The word count on all the short answer questions is a SUGGESTED
word count. It is okay if you go over the word count. You will not lose points, but it
easier for me to grade if you stay within the word count.)
2. Explain what is meant by viral host range. Also address what factors affect a virus’ host
range, and what is meant by tissue tropism.
3. In your own words, describe the theory of endosymbiosis. (50 words or less).
4. Consider the following double-stranded DNA strands:
A)5′ ATG TTC ACA 3′
3′ TAC AAG TGT 5′
B)
5′ CCG GAG CTC 3′
3′ GGC CTC GAG 5′
Which DNA strand would require more energy to break the hydrogen bonds between its
bases? A or B? Why? (50 words or less).
5. Please transcribe the DNA sequence seen below into its complementary RNA sequence:
GCA CCA TTG GCC ATG TGG ACC ACG GCA AGA
Then using the RNA sequence that you transcribed, please translate it into its
corresponding amino acid sequence. Please write the amino acid corresponding to each
codon in the sequence. Use the amino acid chart to guide you.
6. Please describe how DNA replication occurs on the leading strand vs. the lagging strand
of DNA. Please be sure to mention how are these processes similar? How are they
different? (150 words or less).
7. Explain what is meant by the following diagram. (50 words or less). (You will need to
view the exam on Canvas to see the diagram).
8. Describe the different ways that a bacteria can acquire drug resistance genes.
(Remember that we discussed several various ways in class that this can occur, not just
one! Think about the case study!) (150 words or less)
9. Compare and contrast chickenpox and shingles. What is the name of the virus that
causes these diseases? How are chickenpox and shingles similar? How are they
different? How does chickenpox occur and how does shingles occur? Also explain why
someone who once had chickenpox would require a shingles vaccine in older age. (150
words or less)
10. What are the 3 means of horizontal gene transfer in bacteria? Please list them AND
describe them. (Be sure to describe them! Not only mention them

How does Bloom’s Taxonomy help teachers evaluate students today?

In 1956, Benjamin Bloom headed a group of educational psychologists who examined the way we evaluated student learning. He and his committee found that over 95% of the test questions required students to think at the lowest level, simple recall of information. Students were not expected to think, analyze, evaluate, etc. Together they developed a classification of levels of intellectual behavior important in learning.

Answer the following questions:
1. What is Bloom’s Taxonomy?

2. Why was it developed?

3. How does Bloom’s Taxonomy help teachers evaluate students today?

4. List the six levels and provide one verb for each.

Identify the category of thinking skill for each of the following:
5. Label all the parts of the Digestive System.

6. Argue the importance of adequate fluid intake.

7. Classify vegetables according to their nutrients.

8. Demonstrate proper handwashing technique.

9. Assemble the furniture according to the directions.

10. Analyze the contents of a Big Mac.

Describe four staining methods, show how they complement each other and think what types of questions each method could answer.

1)Based on laboratory observations (direct or indirect) draw following neurons or structures, provide spatial scale to each drawing:
1.1) Cortical pyramidal neuron

Purkinje neuron from cerebellum

6 layers of neocortex with different neuronal types

2)In a thought experiment, let’s imagine neuronal tissue enlarged 10,000 times in each direction. This way the objects of our study – neurons and neuronal networks – will reach dimensions of everyday objects we have experience with, and we will be able to visualize and understand their proportions and complexity better.

Make the following calculations:

actual dimension enlarged dimensions

neuronal cell body 10-20 micrometers in diameter ___________________
compare to everyday objects: ___________________

axon diameter ~1 micrometer ____________________

length of an axon millimeters, (up to 1 meter) ____________________
How far would the enlarged axon reach from your current location? ____________________

total dendritic length ~15 mm ____________________

size of a synapse 1-2 micrometers ____________________

synaptic gap 20-40 nanometers ____________________

density of synapses on dendrite ~1 per micrometer ____________________

density of neurons 100 000 per mm3 ____________________
How many enlarged neurons would fit into a telephone booth? ____________________

area of human neocortex 40 cm x 40 cm ____________________
How large area of your hometown would be covered by enlarged cortex? ____________________

3) Essay question: Describe four staining methods, show how they complement each other and think what types of questions each method could answer. (Provide one-page answer.)

Examine the historical context of botulinum toxin.

Description

Examine the historical context of botulinum toxin which may include; 1) history of bacterium Botulinum toxin 2) the discovery of BoNTA for therapeutic use 3)the discovery of BoNTA for aesthetic purposes. Your response should also include the historical content of dermal fillers which may include; 1) the historical use of dermal fillers first used for therapeutic indications 2)the use of dermal fillers agents for Hiv-associated facial lipoatrophy 3) the historical context and development of permanent and biodegradable dermal filler agents.

Describe the surgery that would be used to treat Kayla’s condition. What are the risks of the surgery?

Sara and Matt had a loving relationship and successful careers. With the birth of their daughter Kayla they felt their lives were complete. Kayla was a thriving1, beautiful, fair skinned baby with   sparkling blue eyes. Within the first few weeks of life she grew at an astonishing rate, developing the gentle, soft curves that make babies so lovable. Then suddenly the fairytale existence of the new family abruptly ended.

By the time Kayla was six weeks old her eyes were continually filled with tears. She cried throughout the day and most of the night. Kayla began to run intermittent2 fevers and Sara noticed that she had a lump that would periodically bulge from her groin. Motrin and Tylenol seemed to take care of the problem. Despite the use of cloth diapers and meticulous cleaning, Kayla also developed a raw redness and peculiar rash. Sara repeatedly called the pediatric nurse but she seemed to act as if Sara was just being an overly anxious new mother.

The physician, Dr. James, was not much more concerned. “I think it’s important for you to get back to work, so you have more diversity in your life. Kayla’s crying is most likely the result of colic3 causing her to experience indigestion. The rash is probably simply from not changing Kayla’s diapers enough. You may want to try some A&D ointment.”

Sara felt totally inadequate as a mother and vowed to do all she could to meet the needs of her daughter.
Sara began a bland, but balanced diet and routinely changed Kayla’s diaper every 30 to 60 minutes throughout the day. Sara noticed that her daughter’s diapers were never soaked and often were coated with a thick yellowish discharge4. This too was brushed off by one of the group pediatricians as probably due to a normal vaginal discharge caused by the withdrawal of maternal estrogen stimulation. When Kayla continued to cry and the rash worsened, Sara again called the doctor’s office.

“Continue to use the A&D and leave Kayla diaper-less for several hours a day,” the nurse advised.

Again Sara obliged. Kayla’s crying worsened and even her seasoned5 grandmothers were reluctant to hold or watch her. Sara decided to postpone returning to work for a year so that she could take care of Kayla.

By the time Kayla was three months old both she and Sara looked haggard6. The constant crying and sleepless nights had taken a toll on them. Matt insisted that they go to see the doctor. Kayla was no longer gaining weight or growing, and the groin bulge was now prominent enough for the doctor to acknowledge an inguinal hernia. Sara and Matt felt relieved, believing that this was the source of their daughter’s problems and the end to a nightmare existence, though they were worried about their daughter needing surgery.

“This type of surgery is routine,” Dr. Broward, the surgeon, said reassuringly. “It’s a simple, uncomplicated repair. When Kayla recovers she will feel much more comfortable.” The surgery went without incident and Kayla came home the next day, but the crying continued.  In fact, if anything, she seemed worse than before the surgery and now she was hardly taking in any nourishment.  Sara found that again Kayla was running a fever. She called the pediatrician, who advised her to call the surgeon. The surgeon felt that Sara was probably holding her too much and that the fever was unrelated to the surgery.

Sara was finally convinced by her mother that she needed to see a different doctor for a second opinion, so she found a doctor in a nearby town and managed to get an appointment.  By this time Kayla’s fever was climbing and her once pale skin was now a bright red.  In the waiting room, another mother made a comment to Sara, “you should really keep your baby protected from the sun.”   Sara again felt victimized and began to wonder if she would ever find anyone able to determine the cause of Kayla’s problems.

Questions

1. What symptoms has Kayla exhibited over the first months of her life?

2. What treatments were suggested by the nurses and physicians when the symptoms first appeared?

3. What is a hernia and why would this have been the source of Kayla’s medical problems?

4.  What was Sara feeling “victimized” by the ordeal?

5. For each of the underlined and numbered words in Part 1, suggest a short definition based on the context. If you are really stuck, you can google a definition but try to put it in your own words.

Part II – What’s Really Wrong with Kayla?

At the new office, the nurse weighed and measured Kayla, then took her temperature and reviewed her symptoms with Sara.   Doctor Hubble then came in to check Kayla. He had completed an internship and some research in pediatric urology and immediately recognized the symptoms.  He requested a urine sample, which was successfully accomplished with a catheter7, a procedure that was very uncomfortable for both Kayla and Sara. The specimen was loaded with pus and blood cells.

“I think that in light of the urinary tract infection, Kayla should immediately begin an antibiotic,” said Dr. Hubble. “She also needs a VCUG8.  This is a voiding cystourethrogram is an X-ray test that takes pictures of your bladder and urethra while your bladder is full and while you are urinating.

The doctor also ordered  an IVP8, or an intravenous pyelogram, used to detect anatomic abnormalities.  This X-ray image would show the kidneys, bladder, and ureters.

By the end of the week both tests had been completed and Sara, Matt, and Kayla were back at the pediatrician’s office for a consultation. The tests had revealed a diagnosis of bilateral duplicate collection systems (four ureters instead of the usual two), hydronephrosis (urine collecting in the kidney pelvis), and grades four and five reflux (urine doesn’t empty normally and backs up into the kidneys). Kayla’s kidney function was markedly decreased on the right and partially limited on the left.

“I feel that you need to take Kayla to a specialist,” Doctor Hubble advised. “I recommend Dr. Leftt, a surgeon who is an expert in pediatric urology. I also want you to be aware that within the pediatric urology community there is some disagreement on the course of treatment—medical versus surgical management. You may also want to consult with Dr. Wright. He’s equally as competent, but will most likely take a medical view of how Kayla should be managed. Perhaps you should meet with both doctors before making a decision. Right now I think Kayla should have a daily antibiotic to prevent further infections and damage to her kidneys.”

Questions

6. Three medical procedures are mentioned in this section (numbered above.) Explain the purpose of each of the procedures.

7.  The pediatrician suggested that Dr. Wright and Dr. Leftt would have differing viewpoints on how to treat Kayla.  How will their opinions differ based on Dr. Hubble’s warning here?

7. View a diagram showing a normal kidney with the location of the ureters, bladder. Sketch how Kayla’s urinary system looks in comparison.    →

Part III  –  How Should Kayla Be Treated?

Dr. Leftt asked Sara and Matt to sit down as he pulled out Kayla’s x-rays and explained that the four bulging tubes attached to odd-shaped masses were Kayla’s ureters and kidneys. He advised that the only course of treatment was surgery to move all four ureters higher into the bladder and the creation of a flap valve apparatus to prevent urine from reversing into the kidneys.

“The surgery is not risk free,” Dr. Leftt emphasized, “but without it Kayla’s kidneys may suffer irreversible damage. The severity of the reflux will be reduced, but not eliminated. This allows for growth, but leaves a continued risk of infection. Kayla will need to continue antibiotics, initially be monitored weekly and have periodic tests for several years until her urinary system functions normally.

Dr. Leftt had a kind but firm approach. He reviewed the number of surgeries he had done and advised that the surgery would take four to six hours, and Kayla would be in intensive care for two days followed by a week of hospitalization. If Sara and Matt opted out of surgery, Dr. Leftt felt that there was a good chance that Kayla’s kidneys would fail within a year. Dr. Leftt suggested the family should seek a second opinion before deciding on a course of treatment.

A few days later Sara and Matt met with Dr. Wright. Again the findings and x-rays were reviewed. Dr. Wright felt that there was no urgency to treat Kayla surgically. He explained some children had been successfully treated with long-term prophylactic use of antibiotics. “Some children like Kayla,” Dr. Wright gently explained, “will outgrow the reflux as their bladder grows. It’s foolish to rush into a surgical procedure with all the inherent complications if the infections can be managed medically.”

He reassured Sara and Matt that weekly urinalysis and periodic VCUGs would allow them to closely monitor the functioning of the kidneys. Dr. Wright ended by saying that if the reflux persisted beyond the age of eight, Kayla would then require surgery. Sara and Matt felt confused by the different recommendations proposed by Dr. Leftt and Dr. Wright.

8.  This section has no vocabulary words identified.  Find 2 terms you think some people might have trouble with and highlight or underline them.   Annotate a short definition or description for the words.

9. Describe the surgery that would be used to treat Kayla’s condition. What are the risks of the surgery?

10. On treatment suggested long-term prophylactic use of antibiotics.  What does this mean?

11.   If you were Kayla’s parents, which treatment option would you choose and why. Defend your choice
with evidence based reasoning from this case study. Attach page if necessary.

Discuss a virulence factor found on at least two different microbes. For each virulence factor, discuss how this helps the organism to cause disease in a host.

Pathogenic microbes often have specific proteins or chemicals that aid them in causing disease, referred to as virulence factors. Review the different types of virulence factors in the textbook (section 15.3 and 15.4). Discuss a virulence factor found on at least two different microbes. For each virulence factor, discuss how this helps the organism to cause disease in a host.

****Factors in text: Virulence Factors for Adhesion, Bacterial Exoenzymes and Toxins as Virulence Factors, Viral Adhesins, Antigenic Variation in Viruses, Virulence Factors of Eukaryotic Pathogens.****