Nucleocapsid - Study guides, Class notes & Summaries

Virus: - ANSWER-obligate intracellular parasite What are 4 things that a virus lacks? - ANSWER-1. enzymes for chemical building blocks 2. enzymes for usable energy 3. enzymes, tRNA, and ribosomes for synthesis 4. membranes to localize key molecules ALL virus have.... - ANSWER-nucleic acid and capsid SOME viruses have... - ANSWER-envelope Capsid: - ANSWER-protein coat envelope: - ANSWER-lipid membrane from the host Virion: - ANSWER-a complete, infectious virus particle Bas...

Dmitri Ivanovsky - Answer -studied Tobacco Mosaic Disease to find a bacterial cause for it -saw that bacterial agent was not removed by bacterial filters -mottling of leaves, stunted leaves, wrinkles Beijerinck - Answer -studied Tobacco Mosaic Disease and also saw that the agent was not removed by bacterial filters -coined the term "virus" for something so small that it must pass through the filters Loeffler & Frosch - Answer -former Koch students -studied infectious Foot & Mouth Dis...

CDA Infection Control Exam 2021Terms - correct answer ———— oral surgery procedures - correct answer involve the incision, excision, or reflection of tissue that exposes the normally sterile areas of the oral cavity EXAMPLES ~biopsy ~periodontal surgery ~apical surgery ~implant surgery ~surgical extractions of teeth Droplet nuclei - correct answer Particles <5 µm in diameter formed by dehydration of airborne droplets containing microorganisms that can remain suspended in t...

WGU C-453 Clinical Microbiology Pre-Assessment OA Study, Questions and answers,100% Accurate. Graded A+ Which class of microbes are unicellular organisms that typically lack organelles? - -Bacteria It is determined that a bacterial sample grows robustly in low, moderate, and high concentrations of salt. What is most likely true about this organism? - -It is halotolerant What is the additional molecule contained in the cell walls of Gram-positive organisms that plays a role in the attac...

What are the antigens and antibodies to know for HBV infection? correct answers Antigen and Antibodies S= surface C= core E= nucleocapsid protein HBsAG= proteins on the surface of the cell Anti-HBs= antibodies on surface of the cell HBcAG= proteins in core of cell Anti-HBc= antibodies in core of cell HBeAG= nucleocapsid protein Anti-HBe= antibodies What does it mean to have surface antigens or antibodies? HBsAG or Anti-HBs correct answers HBsAG= positive during acute OR chron...

Micro Chapter 6 100% SOLUTION 2023//2024 3. Which is not true of viruses? A. They can exist in an intracellular or extracellular phase. B. They infect animal and plant cells only. C. They can be observed with an electron microscope. D. They are acellular. E. They replicate only inside host cells. - ANSWER B. They infect animal and plant cells only. 4. Which of the following is true of viruses in the extracellular phase? A. They possess many different enzymes. B. They can reproduc...

what does topoisomerase do? - ANSWERbreaks phosphate backbone to "un" supercoil DNA Another name for Topoisomerase II - ANSWERGyrase Helicase - ANSWERUn"zips" DNA at replication fork What makes up the primosome? - ANSWER1. primase 2. helicase 3. DNA C NASBA stands for... - ANSWERnucleic acid sequence based amplification NASBA - ANSWERRNA is target RNA-->cDNA Reverse transcriptase (RNA-->cDNA) followed by DNA dependent polymerase (cDNA-- >RNA) RNAse H degrades original RN...

Which of the following is an accurate description of a virion? - answer-an infectious particle of protein and nucleic acid outside a host cell The outermost layer of a virion fulfills which of the following functions of the virus? - answer-both protection and recognition A ________ is a virus that infects bacterial cells. - answer-bacteriophage Which of the following is present in cells only during virus infection? - answer-ssDNA Host specificity of a virus is due to - answer-interac...

what is a virus? enveloped vs naked - ️️- HAS TO have a capsid (protein shell that surrounds genome) and genetic material (RNA or DNA, SS or DS, + or - sense) = nucleocapsid - CAN have an envelope and accessory proteins - enveloped virus: outer layer of phospholipid bilayer and viral proteins, most animal viruses - naked virus: no additional layers, most bacterial and plant viruses Why are virion surface proteins important? - ️️- for host cell attachment - include enzymes import...

pseudopeptidoglycan - Answer component of archaea cell walls that is similar to peptidoglycan in structure/function but contains different sugars not susceptible to cell wall antibiotics N-acetylosaminuronic acid - Answer component of pseudopeptidoglycan found in cell walls of some types of Archae histone - Answer protein molecule around which DNA is tightly coiled in chromatin choanocyte - Answer Collar cells that line the body cavity and have flagella that circulate water and di...