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JMU BIOS 280 Exam 1 with Complete Solutions
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JMU BIOS 280 Exam 1 with Complete Solutions
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JMU BIOS 280 Exam 1 with Complete SolutionsWhy are microorganisms beneficial and useful to humans? Correct Ans-Biotechnology
Agriculture
Food and chemical production
Mineral extraction
Waste water treatment
Bioremediation
Give an example of how a microorganism can be useful in agriculture. Correct Ans-Certain
bacteria can make the nitrogen in the atmosphere useful to plants which can benefit humans
when they eat those plants
Give an example of how a microorganism can be useful in food and chemical production.
Correct Ans-Many food additives are derived from microorganisms and they can be used
to produce insulin and vaccines
Why are microorganisms useful in a laboratory setting? Correct Ans-They grow fast, are
small in size, and are amenable to genetic study
, JMU BIOS 280 Exam 1 with Complete Solutions
What are the six types of microorganisms that are encompassed by microbiology? Correct
Ans-Bacteria
Viruses
Protozoa
Microscopic fungi
Microscopic algae
Helminths and other parasites
When do scientists believe the bacteria first existed? Correct Ans-About 4 billion years ago
When do scientists believe oxygen was introduced into the atmosphere? Correct Ans-
About 2 billion years ago
Describe a prokaryote and give two examples. Correct Ans-Single celled in chains or
clusters
No true nucleus
No membrane-bound organelles
, JMU BIOS 280 Exam 1 with Complete Solutions
Archaea and Bacteria
Describe a eukaryote and give four examples. Correct Ans-Single or multicellular
Cells can organize into tissues
Have a nucleus
Have many membrane-bound organelles
Animals, plants, fungi, protozoa
Which eukaryotic organelles originated from prokaryotic cells? Correct Ans-Mitochondria
and chloroplasts
What is an example of endosymbiosis? Correct Ans-Bacteria growing inside an amoeba for
protection
What is taxonomy? Correct Ans-A formal system of organization created by Linnaeus
List the primary concerns of taxonomy. Correct Ans-Classification
Namin
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