VBS 2032 Tests|Bundle Set

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 nonse...

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 ...

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 targ...

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 f...

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 caus...

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 infe...

microbial intoxication Answer the toxin produced by a bacteria is ingested (rather than the bacteria itself) microbial infection Answer the bacteria multiplies in the body 4 phases of infectious disease Answer 1. incubation period 2. prodromal period (feel like something is off) 3. period of...

Why don't "normal" microbiota of the upper respiratory tract cause disease? Answer 1. Competition 2. Immunity 3. Protective effect 4. Non-pathogenic strain 5. Wrong place steps in the pathogenesis of infectious diseases Answer 1. Entry of the pathogen into the body 2. Attachment of the pa...