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NATS 1670 FINAL EXAM | QUESTIONS & ANSWERS | RATED A+
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NATS 1670 FINAL EXAM | QUESTIONS& ANSWERS | RATED A+
What was the life expectancy in the early 1900's? Correct Ans - Under
the age of 50, with a 25% child mortality rate.
When was the first vaccine created? Correct Ans - 1880
____________ _____________ can reduce life expectancy dramatically, due to the lack
of __________________. Correct Ans - INFECTIOUS DISEASES can reduce
life expectancy dramatically, due to the lack of CONTROL.
Upon early discover, microbes were viewed as? Correct Ans - Enemies,
until used in medicine.
What are the beneficial roles of microbes? Correct Ans - - waste
breakdown/food production
- provides protection against more virulent microbe
- drug preparation (penicillin, insulin)
- making vitamins
- digestion
What does mutual life mean, when in context with microbes? Correct Ans
- Microbes keep us alive and we keep them alive.
What is a chronic disease? Correct Ans - a disease that does NOT kill
its host quickly
What is an acute disease? Correct Ans - A disease that DOES cause
death quickly.
What does the natural evolution of a microbe operate on? Correct Ans -
The natural evolution of a microbe operates on its spreading capacity. NOT
the ability to cause disease
,What does microbial natural selection favour? Correct Ans - Microbial
natural selection favours less or non-violent microbes.
Which kind of microbes can live in a host WITHOUT causing damage?
Correct Ans - Microbes that are well-adapted to its host
What epidemics were caused by microbes? Correct Ans - - Small Pox
- Bubonic Plague
- Spanish Influenza
What were the three causes that moved society away from Infectious
Diseases? Correct Ans - - Better Sanitation
- Vaccines
- Antibiotics
Why will society never be clear of infectious diseases? Correct Ans - -
development of drug resistant strains
- outbreaks of existing diseases
- New disease causing agents
What does Dr. Margret Chan believe will happen in the future? Correct
Ans - -We risk entering a post-antibiotic era
- this will cause an end to modern medicine
What is Necrotizing Fasciitis Correct Ans - Flesh eating Disease
Who is to blame for the development of Drug-resistant strains? Correct
Ans - - Farmers
- Health Workers
- Patients
- Hospitals
What is the man/wild life origin of these dieseases
1) AIDS
2) Saars
3) West Nile Virus (WNV)
4) Influenza
5) Monkey Pox Correct Ans - Man Made Wild Life
1) Sexual Activity, Drug addiction, Chimpanzee (SIV)
, Blood
2) Restaurants, Hotels, Hospitals Bats, Palm civet
3) Tires from Africa Wild Birds
4) Poultry Farms Wild Aquatic Birds
5) Pet Retailers and Stores Wild Rodents in Africa
What is Bioterrorism? Correct Ans - The intentional release of bacteria
or toxins for the purpose of harming or killing
Why was the eradication of small pox so successful? Correct Ans - -
very good vaccine
- only has one host: humans
3) Very clear symptoms
What are the factors affecting the emergence of disease? Correct Ans -
- Microbial Adaptation
-Drug Resistance
-Human Behaviour
- International Travel
- Sexual Activity
- Human Susceptibility to infection
- Poverty, Malnutrition, Poor Sanitation
- Changing Ecosystems
- Global Warming
- Climate and Weather
- Wars
- Bioterrorism
What is Light Microscopy Correct Ans - - you can only see the shape of
the cell
Electron Microscopy Correct Ans - - allows you to see the inner parts,
allowing you to learn more
What is a cell Correct Ans - the basic unit of life
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