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MICROBIOLOGY 1.0 > 1.1 Bacterial Ultrastructure and Morphology > Flashcards

1.1 Bacterial Ultrastructure and Morphology Flashcards

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Biology 101 flashcards
1
Q

this event is triggered by near depletion of any several nutrients

A

sporulation

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1
Q

Flagella arrangement: single flagella at one end

A

monotrichous

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1
Q

responsible for attachment of donor and recipient cells in bacterial conjugation

A

sex pili

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2
Q

Flagella arrangement: tuft of flagella at one end

A

lophotrichous

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3
Q

self-replicating DNA molecules independent of chromosomal DNA

A

Plasmids

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3
Q

This appendage is usually found in gram - bacteria

A

Pili/fimbriae

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4
Q

Confers rigidity and shape. ALso responsible for viability of bacterium.

A

cell wall

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4
Q

a polymer of ribitol or glycerol phosphate

A

techoic acid

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4
Q

acts as a selective barrier

A

cytoplasmic membrane

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5
Q

produced when source of N, S, P is limited and there is excess carbon in the medium

A

Poly-beta-hydroxybutyric acid (PHB)

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6
Q

nucleus:eukaryote = ____:prokaryote

A

nucleoid

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7
Q

Prokaryotes: DNA (+/-) histones

A

-

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8
Q

G+ produce what kind of toxin?

A

Exotoxin

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8
Q

granules produced by Mycobacterium tuberculosis

A

Much granules

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9
Q

well-defined mucoid polysaccharide structure with antigenic phagocytic properties

A

capsule/glycocalyx

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10
Q

Prokaryotes: (+/-) carbohydrates in cell membrane

A

-

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11
Q

pili/fimbriae is composed of what structural protein subunit?

A

PILINS

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12
Q

storage for reserve materials/excess food and energy/reservoir of structural building blocks

A

inclusions bodies/granules

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14
Q

Staphylococci appear in (chain/cluster)?

A

cluster

15
Q

call it ____ is it is loosely adherent to the cell wall

A

slime layer

16
Q

facilitate the entry of small molecular substance iin gram negative

A

porins

16
Q

composed of RNA and protein, factories upon which protein are made

A

Ribosomes

17
Q

produced when carbon is in EXCESS, and (together with PHB) used as CARBON source when protein and nucleic acid synthesis are resumed

A

glycogen

18
Q

granules of POLYHOSPHATE, produced when there are large reserves of inorganic phosphate

A

Volutin/metachromic/Babes-Ernst granules

20
Q

Bacterial form with no cluster arrangement.

A

Rods/ Bacillus

22
Q

Bacterial form with single turn, comma-shaped

A

Curved/Vibrio

24
Q

this is unique in bacterial cell wall

A

diaminopimelic acid

25
Q

Dormant but viable state of bacterium

A

SPores

27
Q

Three main components of bacterial cell.

A

cell surface, cytoplasm, appendages

29
Q

Component unique to G-

A

outer membrane

30
Q

Bacterial form that may occur singly, in chains, or in clusters.

A

Spherical/Coccus

31
Q

responsible for virulence and negative charge of cell surface in G+

A

techoic acid

32
Q

Immediate precursor of lysine in bacterial biosynthesis

A

Diaminopimelic acid

34
Q

may confer resistance to antibiotics

A

plasmid

35
Q

Flagella arrangement: flagella all over bacteria

A

peritrichous

36
Q

With thick walls (G +/-)

A

G+

37
Q

Very short bacilli, appearing like cocci

A

coccobacilli

38
Q

with more complex cell envelope (G +/-)

A

gram -

39
Q

with periplasmic space (G +/-)

A

G-

40
Q

May be regular or irregular, with hook on one end or both ends

A

Spiral

41
Q

Flagella are thread-like structures composed entirely of what protein subunit?

A

Flagellin

42
Q

murein sacculus is aka?

A

peptidoglycan layer

43
Q

infolding of the membrane, contain circular or tubular structures attached to DNA chromatin, for cell division/replication

A

Mesosomes

44
Q

petidoglycan layer is an alternating units of what sugar molecules?

A

N-acteyl-D.-muramic acid and N-acetyl-D-glucosamine

45
Q

Plasma membrane:eukaryotes= ______:prokaryotes

A

cytoplasmic membrane

MICROBIOLOGY 1.0 (6 decks)

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