©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
Bacteriology Ch. 1 HW- Connect Exam
Study Guide.
Label the flow chart below showing the classification of microorganisms studied by
microbiologists. - Answer✔Cellular-Fungi
-Protists
-Bacteria
-Archaea
Acellular-Viruses
-Prions
Match the characteristics to each domain of microbial life - Answer✔Bacteria-Usually single-
celled
-No nucleus
-Has peptidogylcan
-Found in all environments
-Prokaryotic in structure
Archaea-Usually single-celled
-No nucleus
-No peptidoglycan
-Found in all environments
-Prokaryotic in structure
Eukarya- Can be single-celled or
multicellular
-Has a nucleus
-No Peptidoglycan
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, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
-Found in non-extreme
environments
-Not prokaryotic in structure
Prior to the work of _________, scientists did not distinguish between members of the Archaea
and the Bacteria. - Answer✔Carl Woese
Differentiate between the types of microorganisms studied by microbiologists. -
Answer✔Eukaryote
An organism characterized by having cells containing DNA in a membrane-bound organelle
Prokaryote
An organism characterized by having a cell lacking a membrane-bound nucleus
Prion
An infectious agent consisting of only protein
Viroid
An infectious agent consisting of only RNA
Virus
An infectious agent made up of protein, nucleic acids and sometimes a lipid membrane
The first direct evidence of primitive cellular life was the 1977 discovery of microbial ________
in the Swartkoppie chert - Answer✔fossils
These findings have been dated at about 3.5 _______ years old - Answer✔billion
How did early cells arise? Modern cells consist of a _______ membrane enclosing water in
which numerous chemical are dissolved and subcellular structures float. - Answer✔plasma
It seems likely that the first self-________ entity was much simpler than even most primitive
modern living cells. - Answer✔replicating
based on a number of considerations, it is hypothesized that at some time in the evolution of life,
there must have been a single molecule that could do both cellular work and replicate itself. A
possible molecule that has been suggested is a catalytic RNA molecule, now called a ____ -
Answer✔ribozyme
The initial statement of the _______________ hypothesis proposed that over time a bacterial
endosymbiont of an ancestral cell in the eukaryotic lineage lost its ability to live independently. -
Answer✔endosymbiotic
The endosymbiont then became either a _________________, if the intracellular bacterium used
aerobic respiration, or a _______________, if the endosymbiont was a photosynthetic bacterium
- Answer✔mitochondrion, chloroplast
2|Page
Bacteriology Ch. 1 HW- Connect Exam
Study Guide.
Label the flow chart below showing the classification of microorganisms studied by
microbiologists. - Answer✔Cellular-Fungi
-Protists
-Bacteria
-Archaea
Acellular-Viruses
-Prions
Match the characteristics to each domain of microbial life - Answer✔Bacteria-Usually single-
celled
-No nucleus
-Has peptidogylcan
-Found in all environments
-Prokaryotic in structure
Archaea-Usually single-celled
-No nucleus
-No peptidoglycan
-Found in all environments
-Prokaryotic in structure
Eukarya- Can be single-celled or
multicellular
-Has a nucleus
-No Peptidoglycan
1|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
-Found in non-extreme
environments
-Not prokaryotic in structure
Prior to the work of _________, scientists did not distinguish between members of the Archaea
and the Bacteria. - Answer✔Carl Woese
Differentiate between the types of microorganisms studied by microbiologists. -
Answer✔Eukaryote
An organism characterized by having cells containing DNA in a membrane-bound organelle
Prokaryote
An organism characterized by having a cell lacking a membrane-bound nucleus
Prion
An infectious agent consisting of only protein
Viroid
An infectious agent consisting of only RNA
Virus
An infectious agent made up of protein, nucleic acids and sometimes a lipid membrane
The first direct evidence of primitive cellular life was the 1977 discovery of microbial ________
in the Swartkoppie chert - Answer✔fossils
These findings have been dated at about 3.5 _______ years old - Answer✔billion
How did early cells arise? Modern cells consist of a _______ membrane enclosing water in
which numerous chemical are dissolved and subcellular structures float. - Answer✔plasma
It seems likely that the first self-________ entity was much simpler than even most primitive
modern living cells. - Answer✔replicating
based on a number of considerations, it is hypothesized that at some time in the evolution of life,
there must have been a single molecule that could do both cellular work and replicate itself. A
possible molecule that has been suggested is a catalytic RNA molecule, now called a ____ -
Answer✔ribozyme
The initial statement of the _______________ hypothesis proposed that over time a bacterial
endosymbiont of an ancestral cell in the eukaryotic lineage lost its ability to live independently. -
Answer✔endosymbiotic
The endosymbiont then became either a _________________, if the intracellular bacterium used
aerobic respiration, or a _______________, if the endosymbiont was a photosynthetic bacterium
- Answer✔mitochondrion, chloroplast
2|Page
