Quiz #3 - cell structure
pleomorphic
Pertaining to a variety of shapes or cell types
endospore
a resistant asexual spore that develops inside some bacteria cells.
The bacterial flagellum moves via?
by rotation that is powered by the proton motive force
Bacteria that do not have a fixed shape are said to be __________.
pleomorphic
Inclusions containing carbon are most commonly in the form of ____________ and can be commercially used to create biodegradable plastics.
poly-beta-hydroxybutyrate
lophotrichous
*Which of the following describe a cluster of flagella emerging from the same site?
Examine the accompanying figure of two lipid molecules arranged in a bilayer. Choose each statement that is correct regarding this structure.
1. The hydrocarbon chains in this lipid are attached to glycerol by an ether linkage (indicated by the letter A). 2. The hydrocarbon chain (indicated by the letter B) is best described as branched. 3. This structure most likely derives from a bacterium.
plasmid
A small ring of DNA that carries accessory genes separate from those of the bacterial chromosome
chromosome
A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins.
Considering the variations in ribosomes found in bacterial and archaeal cells, which of the following statements are correct about ribosomes in both domains?
A. Ribosomes are composed of two subunits, a large 50S subunit and a small 30S subunit B. Ribosomal proteins from bacteria and archaea are also found in eukaryotes.
storage granules
Accumulations of high-molecular-weight polymers synthesized from a nutrient that a cell has in relative excess
amphitricous
Flagella located on both sides on the bacteria
ribosome
Makes proteins
archaea morphology
appear indistinguishable from bacteria, but the cell wall is non-peptdoglycan which is how we tell them apart
Archaea with a plasma membrane composed of a tetraether monolayer would most likely be found ______.
at a temperature of 90oC
gas vesicle
buoyancy
Another type of inclusion, which photosynthetic microbes often use to store carbon dioxide and the enzyme RuBisCO, is the?
carboxysome
peritrichous
flagella all over
Finally, bouyancy in aquatic bacteria is mediated by ____________ , while certain bacteria accumulate magnetite in ____________ that can detect natural magnetic fields.
gas vacuoles, magnetosomes
Nucleic acids are synthesized from inorganic inclusions called ____________, while specialized photosynthetic bacteria can store energy as ______________.
polyphosphate granules, sulfur globules
archaea morphology
square
