MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
Do Prokaryotic Cells reproduce sexually or asexually? -
correct answer ✅asexually
What are the main methods of prokaryotic reproduction? -
correct answer ✅Binary Fission, budding
What are some general characteristics of Prokaryotic Organisms -
correct answer ✅-Most Diverse group in cellular microbes
- thrive in various habitats
- only a few capable of colonizing humans and causing disease
- exist in a variety of shapes
What are the steps of Binary Fission? -
correct answer ✅1. Cell replicates its DNA; both molecules are
attached to the cytoplasmic membrane
2. Cytoplasmic membrane elongates, separating DNA molecules
3. Cross wall forms, membrane invaginates
4. cross wall forms completely
5. daughter cells may separate
,MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
What does Binary Fission look like? -
correct answer ✅
What are the steps of budding? -
correct answer ✅1. DNA which is attached to cytoplasmic
membrane, is replicates
2. cell elongates to form a bud, the expanding cytoplasmic
membrane carries one attached DNA molecule into the bud
3. young bud forms (not fully separated from parent cell)
4. daughter cells is formed (separated from parent cell)
What does Budding look like? -
correct answer ✅
Arrangements of Prokaryotic Cells -
correct answer ✅Result from two aspects of division during binary
fission
- Planes in which cells divide
- Separation of daughter cells
,MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
Arrangements of cocci -
correct answer ✅diplococci, streptococci, tetrad, sarcinae,
staphylococci
arrangements of bacilli -
correct answer ✅single bacillus, diplobacilli, streptobacilli,
palisade, v-shape
Modern Prokaryotic Classification -
correct answer ✅currently based on genetic sequence data
3 domains known
- Archaea
- Bacteria
- Eukarya
What are the common features of Archaea? -
correct answer ✅- Lack true peptidoglycan
- Cell membrane lipids have branches hydrocarbon chains
- AUG codon codes for methionine
, MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
Archaea Survey -
correct answer ✅- Two phyla, Crenarchaeota, Euryarchaetoa
- reproduce by binary fission, budding, or fragmentation (not
covered in class)
- are cocci, bacillus, spirals, or pleomorphic
- NOT known to cause disease
Extremophiles (Archaea) -
correct answer ✅- Require extreme conditions to survive
———Temperature, pH, and/or salinity
- Prominent members are thermophiles and halophiles
Thermophiles -
correct answer ✅DNA, RNA, cytoplasmic membranes, and
proteins do not function properly below 45 degrees celsius
Hyperthermophiles -
correct answer ✅require temperatures over 80ºC
— two representative genera:
——- Thermococcus
2 Exam Questions & Answers (Grade
A+)
Do Prokaryotic Cells reproduce sexually or asexually? -
correct answer ✅asexually
What are the main methods of prokaryotic reproduction? -
correct answer ✅Binary Fission, budding
What are some general characteristics of Prokaryotic Organisms -
correct answer ✅-Most Diverse group in cellular microbes
- thrive in various habitats
- only a few capable of colonizing humans and causing disease
- exist in a variety of shapes
What are the steps of Binary Fission? -
correct answer ✅1. Cell replicates its DNA; both molecules are
attached to the cytoplasmic membrane
2. Cytoplasmic membrane elongates, separating DNA molecules
3. Cross wall forms, membrane invaginates
4. cross wall forms completely
5. daughter cells may separate
,MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
What does Binary Fission look like? -
correct answer ✅
What are the steps of budding? -
correct answer ✅1. DNA which is attached to cytoplasmic
membrane, is replicates
2. cell elongates to form a bud, the expanding cytoplasmic
membrane carries one attached DNA molecule into the bud
3. young bud forms (not fully separated from parent cell)
4. daughter cells is formed (separated from parent cell)
What does Budding look like? -
correct answer ✅
Arrangements of Prokaryotic Cells -
correct answer ✅Result from two aspects of division during binary
fission
- Planes in which cells divide
- Separation of daughter cells
,MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
Arrangements of cocci -
correct answer ✅diplococci, streptococci, tetrad, sarcinae,
staphylococci
arrangements of bacilli -
correct answer ✅single bacillus, diplobacilli, streptobacilli,
palisade, v-shape
Modern Prokaryotic Classification -
correct answer ✅currently based on genetic sequence data
3 domains known
- Archaea
- Bacteria
- Eukarya
What are the common features of Archaea? -
correct answer ✅- Lack true peptidoglycan
- Cell membrane lipids have branches hydrocarbon chains
- AUG codon codes for methionine
, MBIO 3400 Alexander Tice Exam 2 pt.
2 Exam Questions & Answers (Grade
A+)
Archaea Survey -
correct answer ✅- Two phyla, Crenarchaeota, Euryarchaetoa
- reproduce by binary fission, budding, or fragmentation (not
covered in class)
- are cocci, bacillus, spirals, or pleomorphic
- NOT known to cause disease
Extremophiles (Archaea) -
correct answer ✅- Require extreme conditions to survive
———Temperature, pH, and/or salinity
- Prominent members are thermophiles and halophiles
Thermophiles -
correct answer ✅DNA, RNA, cytoplasmic membranes, and
proteins do not function properly below 45 degrees celsius
Hyperthermophiles -
correct answer ✅require temperatures over 80ºC
— two representative genera:
——- Thermococcus
