How would you prepare adherence cells (tissue culture) in a flow cytometry?
In: Biology
Cells that accumulate misfolded proteins initiate a stress response that includes reducing protein translation by inhibiting the initiation stage of translation. First explain the three stages of initiation of protein translation in eukaryotic cells. Next explain the mechanism by which translation is inhibited as part of the stress response.
The three stages are 43S preinitiation complex, 48S initiation complex, and 80S initiation complex but I don't know how to explain them and what happens during each stage.
In: Biology
The 3 bacteria below each has different virulence factors/ mechanisms that allow them to counter the immune system. Briefly describe each case.
(1) Stahylococcus aureus
(2) Listeria monocytogenes
(3) Neisseria meningitidis
In: Biology
Complete the following questions. Illustrates the process of DNA transcription, translation, and protein synthesis.
1. The stages of transcription are initiation, elongation, and termination. Draw a representation of each of these stages . Be sure to include the names of important enzymes and locations.
2. Once mRNA is created through transcription, it is often processed. Explain how mRNA can be processed. Include the names of important enzymes or structures.
3. Translation is how mRNA gets used to create the peptide sequence. Draw what is going on inside a ribosome. Be sure to include the locations of mRNA, tRNA, each subunit of the ribosome, and where the amino acid sequence forms.
In: Biology
write10 to 15 slides with Graphs and diagrams and avoid full slide writing about this topic:
1-Genetic effect of radiation
-Definition of genetic effects
-Difference between genetic and somatic effect
-What are these genetic effects
-Table where you give the effects and the corresponding
dose
In: Biology
Which of the following are ultimate decomposers?
bacteria |
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fungi |
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millipedes |
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Collembolans |
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mites |
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earthworms |
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Only A and B. |
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C, D, E, and F are all reducer decomposers. So are vultures! |
Which of the following are reducer decomposers?
bacteria |
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fungi |
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millipedes |
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Collembolans |
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mites |
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earthworms |
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Only A and B. |
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C, D, E, and F are all reducer decomposers. So are vultures! You want to conduct an experiment on decomposition in the temperate deciduous forest. Which of the following would be usable variables for your experiment?
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In: Biology
Using model materials to demonstrate DNA replication
1. Present a detailed analysis of DNA replication at one replication fork. Use drawing, descriptions, and/or captions detailing the process.
2. In the analysis include the following:
a. Show how the leading and lagging strands are synthesized
b. Show the proteins (enzymes) involved in DNA replication and what their functions are
In: Biology
2. Which vaccine is a toxoid?
a. Influenza (Flu) vaccine. |
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3.What contributes to the diversity in the Influenza virus?
a.Antigenic drift. |
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b.Antigenic shift. |
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c.Segmented RNA. |
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d.All of the above. |
4. Mutations that occur in the Influenza virus contribute to:
a. Antigenic drift. |
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c. |
Segmented RNA. |
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d.All of the above. |
a. Antigenic drift. |
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b.Antigenic shift. |
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c.Segmented RNA. |
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d.All of the above. |
a.HA from the Influenza virus. |
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b.Capsule from Pneumococcus. |
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c.A-B toxin. |
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d.All of the above. |
a.Secretion of TGF-B. |
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b.Recruitment of Treg. |
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c.Lack of MHC expression. |
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d.Lack of tumor antigens. |
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e.All of the above. |
a.The activation of the T cell. |
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b.The suppression of the T cell. |
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c.Production of antibodies. |
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d.The killing of the tumor cell. |
a.Vaccines. |
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b.Therapies against tumor. |
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c.Inhibition of PD-1. |
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d.Production of antibodies. |
a.True
b.False
In: Biology
You are working in the ED at Harborview Medical Center. You are
seeing a 52-year-old male patient who reports cough, fever,
sweating, pleuritic chest pain and general malaise. Your
examination reveals a fever of 102F, respiration rate 24bpm,
rhonchi and decreased breath sounds, tachycardia with pulse of
116bpm, a tender one-inch mass on his right chest wall near his
shoulder and right eye injection with reported pain and normal
vision.
Your history indicates that he returned from Hawaii yesterday where
he participated in the Ironman competition. He was seen in the ED
in Kona, Hawaii two days earlier for similar symptoms that
initiated 12 hours prior to that visit. He had an appendectomy and
shoulder surgery in the past and reports episodic rashes over the
past few months. He is married with adult children and works at the
Fred Hutchinson Cancer Research Center in a molecular genetics
laboratory with no patient care responsibilities. List two
questions that you would ask the patient. For each, note your
rationale (i.e. note why you think that question will help you
diagnose this patients disease).
In: Biology
In the E. coli trp operon, what would be the effect of
a deletion in the region 2 sequence, which would prevent it from
forming stable RNA hairpin structure with either regions 1 or
3?
A) The Trp repressor could not bind to the operator and
trp transcription will be high, even in the presence of
high tryptophan concentration.
B) Translation of the leader sequence could not be initiated.
C) No effect on trp operon transcription.
D) Transcription of the trp operon could not be
initiated.
E) Hairpin 3:4 would form even when tryptophan is low, and this
would constitutively attenuate transcription of the Trp
operon.
In: Biology
How would you make E.coli bacteria cells produce human insulin for you? More than one answer can be correct
transform E. coli cells with a gene in which some parts would be from the human insulin gene and other parts from an E. coli gene. |
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you would replace the protein-coding part of a bacterial gene with the exons of the human insulin gene. |
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all the DNA sequences controlling gene expression (promoter, Shine-Dalgarno sequence, transcription terminator) should come from an E. coli gene. |
In: Biology
Describe the life cycle of Rhizopus stolonifer. Include the Class it belongs to and the structures found in their sexual and asexual stages. Name the four (include Fungi imperfecti) classes of fungi we dealt with in the laboratory and describe how these fungi are classified. Include the Latin definition for each of the classes named.
In: Biology
2. Spemann Organizer and the primitive knot. What is their relevance and how do they differ?
In: Biology
In: Biology