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13 Cards in this Set
- Front
- Back
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What protein has been shown to play an important role in cell division through the formation of the Z-ring? a) FtsZ b) MreB c) ParM d) FlaA e) PepZ |
A. FtsZ |
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The movement of a bacterial cell toward a chemical attractant is called ________. |
Chemotaxis |
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The bacterial ___ functions in protection from desiccation, and phagocytosis, and in attachment. |
Capsule |
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Which of these is included in the Gram-negative cell envelope? a) peptidoglycan, LPS, and lipoteichoic acids b) peptidoglycan, teichoic acids, and lipoteichoic acids c) peptidoglycan, LPS, and teichoic acids d) peptidoglycan, LPS, and a varying periplasmic space e) teichoic acids, lipoteichoic acids, and a large periplasmic space |
D. Peptidoglycan, LPS, and a varying periplasmic space |
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What are the three major structures that comprise the eukaryal cytoskeleton? |
-Intermediate filaments -Microtubules -Microfilaments |
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(True/False) All eukaryal microbes possess cell walls. |
False |
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How does the Archaea cytoplasmic membrane differ- from the Bacteria membrane? a) The archaeal membrane contains cholesterol b) The archaeal membrane contains no proteins c) The archaeal membrane is comprised of fatty acids attached to glycerol phosphate by an ester linkage d) The archaeal membrane is comprised of isoprenoids attached to glycerol phosphate by an ether linkage e) The archaeal membrane gives the cell its characteristic shape |
D. the archaeal membrane is comprised of isoprenoids attached to glycerol phosphate by an ether linkage |
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Which of these is characteristic of a halophile? a) It grows in a circle on a petri dish b) It is extremely small in size c) It has an absolute requirement for salt d) It requires an acidic environment for growth e) It grows only under anaerobic conditions |
C. It has an absolute requirement for salt |
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(True/False) All members of the Archaea live in extreme environments. |
False |
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In which of these aspects do Archaea DIFFER from Eukarya? a) Histones associated with DNA b) The transcription process c) The translation process d) The replication process e) Being diploid in chromosome number |
E. Being diploid in chromosome number |
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Most members of the phylum Crenarchaeota that have been isolated and characterized are classified as ___, although environmental DNA samples have shown that these organisms are also present in cold marine environments. |
Thermophylic/hypothermophilic |
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Unlike bacteria, the plasma membrane of archaea a) is not semipermeable b) contains integral proteins c) is not composed of lipids d) can exist as a monolayer |
D. Can exist as a monolayer |
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What are the three domains of life? a) Crenarchaea, Protista, Eukarya b) Archaea, Bacteria, Fungi c) Bacteria, Eukarya, Archaea d) Euryarchaea, Plantae, Animalae |
C. Bacteria, Eukarya, and Archaea |
