Micro Bio 3050 {Clemson University}
Actual Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!
1. Distinguish between the three domains of life and explain their relatedness -
ANSWER 1.Bacteria
2.Archean
3.Eukarya
-Bacteria and Archean are prokaryotic
-Eukarya is Eukaryotic
2. Domain Bacteria - ANSWER -Prokaryotes
-Usually single-celled
-Majority have cell wall with peptidoglycan.
--We only find this is members of bacteria, nowhere else.
-Abundant in soil, water, air, and in/on other organisms.
-Some live in extreme environments
3. Domain Archaea - ANSWER -Prokaryotes
-Distinguished from Bacteria by unique rRNA sequences.
,-Lack peptidoglycan in cell walls (as we said, it is only in bacteria).
-Have unique membrane lipids.
-Some have unusual metabolic characteristics.
-Many live in extreme environments
4. The Microorganisms of Domain Eukarya - ANSWER -Eukaryotes
-Protists- generally larger than members of Bacteria and Archaea.
--Algae
--Protozoa
--Slime molds
--Water molds
----Caused potato famine in 1886.
-Fungi
--Yeast
--Mold
*Do not have highly differentiated tissues
4. Current theories of microbial evolution and the evidence used to support these
theories. - ANSWER -Microbial fossils:
--Swartkoppie and Archaean Apex chert (australia).
--3.5 billion years old
--Fossil record sparse
, -Indirect evidence and scientific method.
-Study of extant organisms
--They are alive today and act similarly as they did in the past.
5. Define the prokaryotic "species" and the microbial strain - ANSWER -Since
Bacteria and Archaea do not reproduce sexually, the term "species" has a different
meaning:
--not defined as a interbreeding natural population
6. A microbial Species is defined as - ANSWER A collection of strains that
share many stable properties and differ significantly from other groups of strains.
7. Microbial Strain (subset of a microbial species) is: - ANSWER A strain
consists of the descendants of a single, pure microbial culture.
-Ex
--Species= E.Coli
---Strain name=K12
----nonpathogen
---Another strain name= 0157;H7
----deadly
-One strain is designated as the type strain (the standard strain).
--Permanent example
--Usually one of the first strains of a species studied.
--Often most fully characterized.
Actual Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!
1. Distinguish between the three domains of life and explain their relatedness -
ANSWER 1.Bacteria
2.Archean
3.Eukarya
-Bacteria and Archean are prokaryotic
-Eukarya is Eukaryotic
2. Domain Bacteria - ANSWER -Prokaryotes
-Usually single-celled
-Majority have cell wall with peptidoglycan.
--We only find this is members of bacteria, nowhere else.
-Abundant in soil, water, air, and in/on other organisms.
-Some live in extreme environments
3. Domain Archaea - ANSWER -Prokaryotes
-Distinguished from Bacteria by unique rRNA sequences.
,-Lack peptidoglycan in cell walls (as we said, it is only in bacteria).
-Have unique membrane lipids.
-Some have unusual metabolic characteristics.
-Many live in extreme environments
4. The Microorganisms of Domain Eukarya - ANSWER -Eukaryotes
-Protists- generally larger than members of Bacteria and Archaea.
--Algae
--Protozoa
--Slime molds
--Water molds
----Caused potato famine in 1886.
-Fungi
--Yeast
--Mold
*Do not have highly differentiated tissues
4. Current theories of microbial evolution and the evidence used to support these
theories. - ANSWER -Microbial fossils:
--Swartkoppie and Archaean Apex chert (australia).
--3.5 billion years old
--Fossil record sparse
, -Indirect evidence and scientific method.
-Study of extant organisms
--They are alive today and act similarly as they did in the past.
5. Define the prokaryotic "species" and the microbial strain - ANSWER -Since
Bacteria and Archaea do not reproduce sexually, the term "species" has a different
meaning:
--not defined as a interbreeding natural population
6. A microbial Species is defined as - ANSWER A collection of strains that
share many stable properties and differ significantly from other groups of strains.
7. Microbial Strain (subset of a microbial species) is: - ANSWER A strain
consists of the descendants of a single, pure microbial culture.
-Ex
--Species= E.Coli
---Strain name=K12
----nonpathogen
---Another strain name= 0157;H7
----deadly
-One strain is designated as the type strain (the standard strain).
--Permanent example
--Usually one of the first strains of a species studied.
--Often most fully characterized.
