NCK Licensing Exam (Nursing) Bacteriology — practice questions
37 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NCK Licensing Exam (Nursing) Bacteriology in the app →Which material forms the cell wall of a bacterium?In a Gram-positive bacterium, peptidoglycan accounts for what share of the cell wall?What lies immediately outside the thin peptidoglycan wall of a Gram-negative bacterium?What holds the Gram-positive cell wall onto the plasma membrane beneath it?How does an archaean cell wall differ from a bacterial one?Water floods into a bacterium sitting in dilute fluid. What does its cell wall prevent?Which statement pairs a basic prokaryotic shape with the right description?Where does a prokaryote keep its single circular chromosome?A capsule around a pathogen contributes to infection mainly by doing what?Which prokaryotic appendage is used for locomotion?Many antibiotics hit bacterial wall construction because their structure mimics which molecules?What distinguishes the lipids of an archaeal plasma membrane from a bacterial one?Why does binary fission on its own leave a bacterial population genetically uniform?A harmless bacterium takes up loose DNA lying in its surroundings and turns pathogenic. Which process is this?Which agent carries chromosomal DNA from one bacterium to another during transduction?Conjugation moves DNA between prokaryotes using which structure?Bacteriophages shuttle genes between bacteria. What is the equivalent situation in archaea?Imprudent and excessive antibiotic use increases resistant bacteria by which mechanism?MRSA takes its name from resistance to which set of drugs?How does community-associated MRSA differ from MRSA seen inside healthcare facilities?Why does feeding livestock routine low doses of antibiotics worry clinicians?Why is prescribing an antibiotic for a cold or the flu treated as misuse?What holds the cells of a biofilm together?What share of infections acquired in hospital is attributed to biofilms?How much antibiotic can bacteria in a biofilm withstand compared with free-living cells?The Black Death is believed to have been an outbreak of which disease?DNA recovered from an Athenian mass grave pointed to which agent for the Plague of Athens?Which organism produces the toxin responsible for botulism?A patient develops bloody diarrhea days after eating raw spinach. Which agent fits best?A disease that is constantly present at low incidence in a population is described as what?High doses of antibiotics can let which organism overgrow the gut and cause chronic diarrhea?Roughly what proportion of recently emerging human infectious diseases are zoonoses?Which organisms carry out biological nitrogen fixation?Why must a legume root nodule stay free of oxygen?How do bacteria such as Pseudomonas aeruginosa help clear mercury pollution?Commensal bacteria on the skin and in the gut benefit their human host in which way?Which structure lets some soil bacteria survive heat and drought until conditions improve?