Nats 1670 Final Exam Questions with 100% Correct Answers | Latest Version 2024 | Verified

What was the life expectancy in the early 1900's? - Under the age of 50, with a 25% child mortality rate. When was the first vaccine created? - 1880 ____________ _____________ can reduce life expectancy dramatically, due to the lack of __________________. - INFECTIOUS DISEASES can reduce life expectancy dramatically, due to the lack of CONTROL. Upon early discover, microbes were viewed as? - Enemies, until used in medicine. What are the beneficial roles of microbes? - - 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? - Microbes keep us alive and we keep them alive. What is a chronic disease? - a disease that does NOT kill its host quickly What is an acute disease? - A disease that DOES cause death quickly.What does the natural evolution of a microbe operate on? - The natural evolution of a microbe operates on its spreading capacity. NOT the ability to cause disease What does microbial natural selection favour? - Microbial natural selection favours less or nonviolent microbes