bio 117 midterm exam 100% complete.
bio 117 midterm exam 100% complete.
In which of these environments would you expect to find prokaryotic organisms? - ANSWER All answers
are correct.
-deep-sea vents
-geysers and hot springs
-inside Antarctic ice
-desert soils
Archaea have similar characteristics to both Bacteria and Eukarya. Look at the archaean trait and
indicate whether it is similar to Bacteria or Eukarya for each.
Answer Choices
A. Bacteria
B. Eukarya
1. Reproduce by binary fission
2. Complex RNA polymerases
3. Most or all members are single celled
4. No membrane bound nucleus
5. No peptidoglycan in cell walls
6. Exist in a wide range of environments
7. Use a wide variety of sources of energy and carbon
,bio 117 midterm exam 100% complete.
8. Not affected by antibiotics - ANSWER 1. A. Bacteria
2. B. Eukarya
3. A. Bacteria
4. A. Bacteria
5. B. Eukarya
6. A. Bacteria
7. A. Bacteria
8. B. Eukarya
Match the following ways bacteria and/or archaea can transfer or exchange genetic information
(sometimes called horizontal gene transfer) with the descriptions.
[a] : The transfer of prokaryotic genes from a donor to a recipient cell via a virus.
[b] : The uptake of foreign DNA from an organism's surroundings.
[c] : DNA is transferred from a donor to a recipient cell when the two cells are joined. - ANSWER -
Transduction: : The transfer of prokaryotic genes from a donor to a recipient cell via a virus.
-Transformation: : The uptake of foreign DNA from an organism's surroundings.
-Conjugation: : DNA is transferred from a donor to a recipient cell when the two cells are joined.
Which is NOT true of most bacterial genomes? - ANSWER It is found within the nucleus.
Which of the following are ways a biologist could begin to identify or categorize bacteria? (Select ALL
that apply.) - ANSWER -Gram positive/gram negative
-Reproductive method
-Shape
-Arrangement (diplo-, staphylo-, strepto-, etc.)
Gram staining classifies bacteria into two groups based on which characteristic? - ANSWER the
composition of the cell wall
, bio 117 midterm exam 100% complete.
In which of the following domains is the transfer of genetic material between two individuals by means
other than sexual reproduction (horizontal gene transfer), NOT important? - ANSWER Eukarya
Bacteria and Archaea obtain energy and carbon from a wide range of sources and can be categorized
accordingly. Match the following examples to their category.
Cyanobacteria were among the first organisms on earth to photosynthesize, eventually leading to an
oxygen-rich atmosphere. Through photosynthesis, they utilize energy from sunlight to fix carbon dioxide
from the atmosphere. [a]
Echerichia coli can be found in the digestive tracts of humans and helps in our digestion. E. coli uses
organic compounds we eat, such as glucose, for both a carbon source and energy. [b]
Beggiatoa sp. bacteria are found in high-sulfur environments, like those near deep sea hydrothermal
vents. They break down hydrogen sulfide as an energy source and fix carbon dioxide. [c] - ANSWER
Cyanobacteria were among the first organisms on earth to photosynthesize, eventually leading to an
oxygen-rich atmosphere. Through photosynthesis, they utilize energy from sunlight to fix carbon dioxide
from the atmosphere. Photoautotroph
Echerichia coli can be found in the digestive tracts of humans and helps in our digestion. E. coli uses
organic compounds we eat, such as glucose, for both a carbon source and energy. Chemoheterotroph
Beggiatoa sp. bacteria are found in high-sulfur environments, like those near deep sea hydrothermal
vents. They break down hydrogen sulfide as an energy source and fix carbon dioxide. Chemoautotroph
What has metagenomic analysis allowed researchers to do for the first time? - ANSWER study organisms
that cannot be cultured (grown in the lab)
How do some prokaryotes help other organisms obtain nitrogen? - ANSWER They convert atmospheric
nitrogen into a form useable by other species.
How do prokaryotes reproduce? - ANSWER binary fission
bio 117 midterm exam 100% complete.
In which of these environments would you expect to find prokaryotic organisms? - ANSWER All answers
are correct.
-deep-sea vents
-geysers and hot springs
-inside Antarctic ice
-desert soils
Archaea have similar characteristics to both Bacteria and Eukarya. Look at the archaean trait and
indicate whether it is similar to Bacteria or Eukarya for each.
Answer Choices
A. Bacteria
B. Eukarya
1. Reproduce by binary fission
2. Complex RNA polymerases
3. Most or all members are single celled
4. No membrane bound nucleus
5. No peptidoglycan in cell walls
6. Exist in a wide range of environments
7. Use a wide variety of sources of energy and carbon
,bio 117 midterm exam 100% complete.
8. Not affected by antibiotics - ANSWER 1. A. Bacteria
2. B. Eukarya
3. A. Bacteria
4. A. Bacteria
5. B. Eukarya
6. A. Bacteria
7. A. Bacteria
8. B. Eukarya
Match the following ways bacteria and/or archaea can transfer or exchange genetic information
(sometimes called horizontal gene transfer) with the descriptions.
[a] : The transfer of prokaryotic genes from a donor to a recipient cell via a virus.
[b] : The uptake of foreign DNA from an organism's surroundings.
[c] : DNA is transferred from a donor to a recipient cell when the two cells are joined. - ANSWER -
Transduction: : The transfer of prokaryotic genes from a donor to a recipient cell via a virus.
-Transformation: : The uptake of foreign DNA from an organism's surroundings.
-Conjugation: : DNA is transferred from a donor to a recipient cell when the two cells are joined.
Which is NOT true of most bacterial genomes? - ANSWER It is found within the nucleus.
Which of the following are ways a biologist could begin to identify or categorize bacteria? (Select ALL
that apply.) - ANSWER -Gram positive/gram negative
-Reproductive method
-Shape
-Arrangement (diplo-, staphylo-, strepto-, etc.)
Gram staining classifies bacteria into two groups based on which characteristic? - ANSWER the
composition of the cell wall
, bio 117 midterm exam 100% complete.
In which of the following domains is the transfer of genetic material between two individuals by means
other than sexual reproduction (horizontal gene transfer), NOT important? - ANSWER Eukarya
Bacteria and Archaea obtain energy and carbon from a wide range of sources and can be categorized
accordingly. Match the following examples to their category.
Cyanobacteria were among the first organisms on earth to photosynthesize, eventually leading to an
oxygen-rich atmosphere. Through photosynthesis, they utilize energy from sunlight to fix carbon dioxide
from the atmosphere. [a]
Echerichia coli can be found in the digestive tracts of humans and helps in our digestion. E. coli uses
organic compounds we eat, such as glucose, for both a carbon source and energy. [b]
Beggiatoa sp. bacteria are found in high-sulfur environments, like those near deep sea hydrothermal
vents. They break down hydrogen sulfide as an energy source and fix carbon dioxide. [c] - ANSWER
Cyanobacteria were among the first organisms on earth to photosynthesize, eventually leading to an
oxygen-rich atmosphere. Through photosynthesis, they utilize energy from sunlight to fix carbon dioxide
from the atmosphere. Photoautotroph
Echerichia coli can be found in the digestive tracts of humans and helps in our digestion. E. coli uses
organic compounds we eat, such as glucose, for both a carbon source and energy. Chemoheterotroph
Beggiatoa sp. bacteria are found in high-sulfur environments, like those near deep sea hydrothermal
vents. They break down hydrogen sulfide as an energy source and fix carbon dioxide. Chemoautotroph
What has metagenomic analysis allowed researchers to do for the first time? - ANSWER study organisms
that cannot be cultured (grown in the lab)
How do some prokaryotes help other organisms obtain nitrogen? - ANSWER They convert atmospheric
nitrogen into a form useable by other species.
How do prokaryotes reproduce? - ANSWER binary fission
