Vbs 2032 - Study guides, Class notes & Summaries

Define an antibiotic and an antimicrobial agent. Answer Antibiotic: a low molecular substance produced by a MO that at a low concentration inhibits or kills other MOs Antimicrobial agent: any substance of natural, semisynthetic or synthetic origin that kills or inhibits the growth of MOs but causes little or no damage to the host... all antibiotics are antimicrobials, but not all antimicrobials are antibiotics. What are the targets of antibiotics? Answer Cell wall synthesis, folate synthes...

Epidemiology Answer the study of the distribution and causes of disease in populations Contagious/communicable Answer an infectious disease that can be transmitted from one host to another can be direct or indirect Non-communicable disease Answer disease that typically cannot be transmitted from one host to another - usually caused by normal microbiota or the environment Attack rate Answer the number of susceptible persons developing illness in a population exposed to an infectious age...

What is the difference between an asymptomatic carrier and a person with a latent infection? Answer -A carrier: is asymptomatic but is still shedding the pathogens, making the people around them sick. (Eg. Typhoid Mary; a cook for wealthy families. Had Typhoid Fever, but instead of her body ridding the salmonella typhi, the organism continued to proliferate in her gallbladder. Poor handwashing before food preparation, got families sick. High mortality rate). -latent infection: pathogen is not ...

VBS 2032 Exam 2 With Complete Questions and Answers...

Describe some features that maintain the sterility of a healthy urinary tract? Answer Flushing action of urine Low pH Urine composition Mucous Inhibitory peptides and antibodies Anatomy- one way valves Peristalsis Sphincter muscles keep system closed most of the time How can a primary infection lead to a secondary infection? Answer cells are damaged from the primary infection and so you can get a secondary infection from bacteria you already carry- i.e. pneumonia Primary pathogen An...

VBS 2032 FINAL EXAM 2023...

VBS 2032 Exam 4 Studyguide 2023...

Antibiotic Answer Produced by a microorganism that, at a low concentration, inhibits or kills other microorganisms Antimicrobial Answer Any substance, natural, semisynthetic or synthetic that kills or inhibits the growth of microorganisms with little or no damage to the host. What are the targets of antibiotics? Answer They target and exploit pathways that a slightly different in bacteria than in mammalian or eukaryotic cells What is the target of b-lactam drugs? Answer Target cell wall...

VBS 2032 Exam 1 -2023...

What are two main reasons that bacteria change so rapidly? Answer They can reproduce very quickly and have horizontal gene transfer. What are the different kinds of mutations and what are the results of these mutations? Answer Reading frame shift, base mutation can cause missense, silent or nonsense. What is the difference between vertical and horizontal transmission? Answer Vertical transmission is through reproduction such as binary fission while horizontal transmission is through uptaki...