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● The outermost structure of many prokaryotic cells.
Cell Wall: Peptidoglycan
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● Some species of bacteria or archaea may lack a —
cell wall altogether.
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● It is found OUTSIDE THE CELL wall of many bacteria.
Capsule: Hydrated Polysaccharide
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● The — provides some PROTECTION against antibacterial agents
capsule
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prevents desiccation
capsule
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● These may be the reasons why it can ENHANCE VIRULENCE.
capsule
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Nucleoid ● This is also known as the —
nuclear zone or nuclear region
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where the PROKARYOTIC chromosome is FOLDED AND PACKED.
Nucleoid
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● Nucleoid is usually not bound by a
nuclear membrane.
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● These are small, independently replicating CIRCULAR DOUBLE-STRANDED DNA molecules that CONFER ADDITIONAL TRAITS to the bacteria, such as resistance to antibiotics.
Plasmids
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● Thin, rigid, CURVED RODS
Flagella
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● Movement of prokaryotic flagella is
proton driven.
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● Thick TUBULAR rod-like protein structures that are SHORTER and THINNER compared to flagella.
Pili (singular Pilus)
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● Used to EXCHANGE GENETIC MATERIALS during reproduction (conjugation).
Pili (singular Pilus)
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EXCHANGE GENETIC MATERIALS during reproduction
conjugation
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● Tiny BRISTLE-LIKE FIBERS emerging from the surface of the bacterial cells, used by bacteria to ATTACH TO THE HOST CELL.
Fimbriae
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● Particles of AGGREGATED PROTEIN.
Inclusion Bodies
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● STORE SUBSTANCES that are present in excess, which can serve as a RESERVE METABOLIC SUBSTRATE.
Inclusion Bodies
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Inclusion Bodies ● Examples are
storage granules and gas vacuoles.
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● Have a small subunit (—) and a large subunit (—).
30S, 50S Prokaryotic Ribosomes
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● The 30S and 50S subunits assemble together to form — sedimentation rate.
70S
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● The "S" in ribosomal subunits stands for — units, named in honor of the scientist —
Svedberg, Theodor Svedberg.
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Theodor Svedberg ● — Nobel Prize for Chemistry, Swedish chemist.
1926
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● Theodor Svedverg conducted research on — using the ULTRACENTRIFUGE.
colloids and proteins
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are used to produce energy (mainly glucose, fatty acids, amino acids, and their byproducts) and to synthesize larger molecules (e.g., amino acids used for protein synthesis).
Metabolic substrates
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ability of a virus or a bacterium to cause damage to its host. (pagpasok ng bacteria host)
virulence
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(removal of moisture).
dessication