Antigenic drift - Study guides, Class notes & Summaries

A heritable change in DNA sequence (or RNA sequence in RNA viruses) a. anomaly b. mutation c. DNA damage d. pyrimidine dimer correct answersb. mutation As a result of mistakes made by the RNA dependent RNA polymerases, influenza viruses demonstrate: a. antigenic confusion b. antigenic shift c. antigenic drift d. lysis correct answersc. antigenic drift Newly formed influenza viruses would naturally clump together if _____________is inhibited by "Tamiflu": a. sialic aci...

Exam 2: BIO205 / BIO 205 (Latest 2024 / 2025 Update) Microbiology Exam | Questions and Verified Answers | 100% Correct | Grade A - GCU Question: when protozoa are ingested into a host, what happens? Answer: pass through the stomach and EXCYST to release trophozoites Question: five step process of lytic phage Answer: Attachment genome entry synthesis assembly release Question: which phage replicates inside the host and then lyses its host during release? Answer: lytic ...

NMU CLS-M: Mycology, Virology, and Parasitology Practicum Exam Already Passed A germ tube-negative yeast is isolated in the laboratory. The isolate is found to be negative for urease and unable to assimilate dextrose, maltose, or sucrose. CMT agar morphology showed blastoconidia only. The organism is most likely: Select one: a. Candida albicans b. Candia parapsilosis c. Torulopsis glabrata d. Geotrichum candidum Torulopsis glabrata One of the most critical diagnostic criteria in...

a global epidemic of disease that spreads to more than one continent Ans: Pandemic the occurrence of disease in excess of what would normally be expected in a community, location, or time of year. May last a matter of days, weeks, or years Ans: Outbreak The separation and restriction of people who were exposed to contagious disease to see whether they become ill Ans: Quarantine seperation of sick people from those who are not ill Ans: Isolation the use of epidemiology to assess short...

ASCP RECALLS QUESTIONS WITH ANSWERS (ALL CORRECT)2024 pseudo aeruginosa vs putida - CORRECT ANSWER growth at 42C Characteristic of transudate - CORRECT ANSWER noninflammatory response Why vaccinate for influenza - CORRECT ANSWER Antigenic drift Foward 4+ 4+, Reverse 2+ 2+ Next step? (Warm sample, room temp incubation, ....) - CORRECT ANSWER warm sample Foward 0 2+/mf, Reverse 4+ 0 Cause of discrepancy? - CORRECT ANSWER Transfused with O cells or B subgroup? (Transfused with O ce...

Describe antigenic shift and antigenic drift and which causes isolated epidemics vs pandemics. Antigenic Drift - repeated minor antigenic changes' retains some resemblance to prevailing strains (Types A and B); able to cause isolated epidemics.1 Antigenic Shift - major change in one or both surface antigens; no serologic relationship with prevailing strain (only Type A) ; able to cause pandemics. Segmented genome of influenza 1. Genome is segmented - Genetic reassortment can occur when a...

Antigenic drift - correct answer Small changes (or mutations) in the genes of influenza viruses that can lead to changes in the surface proteins of the virus Antigenic shift - correct answer An abrupt, major change in an influenza A virus, resulting in new surface proteins and/or new HA and NA proteins in influenza viruses that infect humans Asymptomatic carriers - healthy - correct answer A person or other organism that has become infected with a pathogen, but that displays no signs or sy...

When looking at the schedule for vaccines that might be indicated for children and adolescents aged 18 years or younger based on medical indications, what does the orange bar represent? a. Contraindicated. b. Precautions for vaccination. c. Recommended if an additional risk factor is present. d. Additional doses may be needed based on condition. - b During which step of the Pharmacists' Patient Care Process would a pharmacist analyze a patient's need for certain vaccines? a. Collect b...

NURS 5315 FINAL EXAM WITH 100%VERIFIED COMPLETE SOLUTIONS. NURS 5315 FINAL EXAM Anion gap 3-10 normal osmol gap is < 10 mOsm/kg elevated = etoh Dehydration triggers renin Cirrhosis increases oncotic pressure HF decreases it. Elevated serum osmolality pulls potassium Thiazide diuretics cause metabolic alkalosis due to aldosterone stimulating reabsorption of Na and bicarb in proximal tubule. ACIDOSIS = hyperkalemia Crohn’s active IL-4. IL-4 is associated with inflammation. Diapede...

Rheumatic fever is a consequence of correct answers an immune reaction following strep throat, resulting in damage to heart valves Diseases caused by Streptococcus pneumoniae include correct answers otitis media, meningitis, lobar pneumonia, bronchial pneumonia Which group is at greatest risk for B Streptococcus infection? correct answers neonates Pertussis has all of the following characteristics: correct answers 1. the pathogen has virulence factors to destroy the action of respira...