Microbiology Exam 1

MICROBIOLOGY EXAM 1 (Graded A+)



Microorganism - CORRECT ANSWER-are organisms that are
too small to see with the unaided eye


examples of microorganisms - CORRECT ANSWER-bacteria
fungi
protozoa
microscopic algae
viruses


what kind of microscope do you use when you are working
with microorganisms you can't see? - CORRECT ANSWER-
bright field microscope


what are the different magnifications of a bright field
microscope - CORRECT ANSWER-4x
10x
40x
100x

,what is the kind of microscope that you use when looking at a
virus - CORRECT ANSWER-electron microscope


what are the different magnifications of the electron
microscope - CORRECT ANSWER-1 mil
2 mil
10 mil


How are microbes helpful - CORRECT ANSWER-decompose
organic waste
generate O2
produce chemical products such as ethanol and others
produce fermented foods ex: vinegar, cheese, and bread
produce products used in manufacturing ex: cellulose and
insulin


How many microbes are pathogenic out of all the
microorganisms - CORRECT ANSWER-70/10 mil


what knowledge do microbes give humans - CORRECT
ANSWER-prevent diseases
allow food storage and prevent food spoilages

, stop transmission of diseases


Microbiology - CORRECT ANSWER-the study of organisms too
small to be seen with the naked eye


microbial ecology - CORRECT ANSWER-the study of the
relationship between microorganisms and their environment


competitive exclusion - CORRECT ANSWER-a way to kill the
bad bacteria


- change in the pH
- secrete enzymes
- eat the food


bioremediation - CORRECT ANSWER-using microbes to clean
up pollutants


Bacillus thuringienisis - CORRECT ANSWER-can kill insects but
doesn't harm plants or animals


Order of the Scientific Method - CORRECT ANSWER-observe
hypothesis