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Protozoa > Protozoa Ch1 > Flashcards

Protozoa Ch1 Flashcards

1
Q

Binary fission

A

Giardia lamblia

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2
Q

Budding

A

A bud which is formed detaches to develop into a new organism

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3
Q

Budding ex

A

Toxoplasma gondii

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4
Q

Asexual Protozoa

A

Giardia lamblia + Toxoplasma gondii

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5
Q

Protozoans are a group of

A

65,000 (or more)

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6
Q

colonized a wide array of

A

aquatic + terrestrial habitats.

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7
Q

Protozoa not a part of microbial community

A

False

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8
Q

Protozoa live in

A

moistmoisture films

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9
Q

Protozoa are …………organisms
, even though living in a …………environment

A

aquatic

terrestrial

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10
Q

All …………in the individual protozoa organism appear alike.

A

nuclei

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11
Q

Protozoa nucleus is ……… with scattered chromatin giving a diffuse appearance to the nucleus.

A

vesicular

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12
Q

One of Protozoa type of vesicular nucleus contains a more or less central body, called an …………

A

endosome or karyosome

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13
Q

The protozoal cells are not enclosed by a…………

A

cell wall

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14
Q

The protozoal cells are protected protected by a special thin and pliable layer known as

A

pellicle or periplast. ةرشق

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15
Q

The Protozoa ………… is separated into two layers

A

cytoplasm

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16
Q

The cytoplasm is separated into two layers: an outside layer called

A

ectoplasm

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17
Q

The Protozoa cytoplasm is separated into two layers: the interior layer called.

A

endoplasm

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18
Q

Protozoa have a relatively ……… , …….. structure

A

complex , internal

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19
Q

Protozoa have internal structures carry out complex metabolic activities ex:

A

membrane-bound nucleus, Golgi bodies, endoplasmic reticulum, ribosomes and mitochondria.

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20
Q

Importance of Protozoans

A

Soil fertility.

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21
Q

Protozoa can manage bacterial populations by …………

A

feeding on soil bacteria

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22
Q

Protozoa Accelerate the decomposition of ……………

A

dead organic substances by microbes.

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23
Q

Protozoa Excrete ………… in soils promotes plant growth.

A

N and P

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24
Q

Protozoa helps in Wastewater treatment.

A

True

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25
Q

Protozoa provides

A

shelter, carbon, and vital phytonutrients.

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26
Q

Protozoa Found worldwide and in most habitats.

A

True

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27
Q

…………species are …………, but all higher animals are infected with one or more species of protozoa.

A

Most

free living,

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28
Q

Which of the following statements is true about infections?

A. All infections are life-threatening.
B. The severity of an infection depends on the species and strain of the parasite.
C. The severity of an infection depends on the age of the host.
D. Asymptomatic infections are always harmless.

A

Answer: B

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29
Q

. Asexual Protozoa

A

Giardia lamblia

Toxoplasma gondii

30
Q

division result in the formation of two daughter of parasite.

A

Binary fission

31
Q

Binary fission

A

Giardia lamblia

32
Q

A bud which is formed detaches to develop into a new organism.

33
Q

Budding Protozoa

A

Toxoplasma gondii

34
Q

sexual Protozoa

A

malarial parasite
ciliate protozoa

35
Q

sexual Protozoa type

A

Syngamy

Conjugation

36
Q

A motile microgamete unites with a non-motile macrogamete to generate a diploid zygote in Sporozoa

37
Q

transfer of genetic material between cells by direct cell-to-cell contact or by a bridge like connection between two cells.

A

Conjugation

38
Q

Conjugation

A

ciliate protozoa

39
Q

Syngamy

A

malarial parasite)

40
Q

The male and female gametes give rise to the same unicellular fusion to form a diploid zygote. both gametes are produced by the same parasites

41
Q

Autogamy It occurs in some

A

ciliated protozoa e.g.; Paramecium.

42
Q

can survive extreme environments for long period of time before infecting their host

A

Cysts stage

43
Q

is contagious, they feed and multiply. Can not survive in extreme environments

A

trophozoite stage

44
Q

Rhizopoda move by

A

pseudopodia

45
Q

Rhizopoda are

A

Intestina
Free living

46
Q

Rhizopoda moved by pseudopodia in Intestina

A

E. histolytica

Entamoeba coli

47
Q

Rhizopoda moved by pseudopodia that are free living

A

Naegleria fowleri

Acantham

oeba spp

48
Q

ZooMastigophora move by

49
Q

ZooMastigophora are in

A

Intestinal

Uro genital

Blood +Tissue

50
Q

ZooMastigophora in Intestinal

A

Giardia lamblia

51
Q

ZooMastigophora transfer with Uro genital

A

Trichomonas vaginalis

52
Q

ZooMastigophora transfer with Blood and Tissue

A

Trypanosoma
spp
Leishmani

53
Q

sporozoa are moving by

A

No organs for locomotion)

54
Q

sporozoa stick in

A

Intestinal

Blood

Tissue

55
Q

sporozoa in Intestinal

A

Cryptosp oridium

56
Q

sporozoa in Blood

A

Plasmodium

57
Q

sporozoa Tissue

A

Toxoplasma gondii

58
Q

Ciliates Move by

59
Q

Ciliates infected in

A

Intestinal

60
Q

Ciliates in Intestinal

A

Balantidium coli

61
Q

exist in human body and cause harm
to infected human.

A

Pathogenic protozoa:

62
Q

does not cause harm to infected
human. (Normal flora?)

A

Commensal protozoa:

63
Q

does not cause harm to infected
human. (Normal flora?)

A

Commensal protozoa

64
Q

weak protozoa that cause minimal
effect to infected healthy man but has severe effect on infected immunocompromised.

A

Opportunistic protozoa

65
Q

trophozoites through intimate body contact, such as
sexual transmission (

A

Direct transmission

66
Q

Direct transmission ex

A

Trichomonas spp.)

67
Q

humans get infected through ingestion of
water/food contaminated with parasites’ cysts. (

A

Faecal-oral transmission

68
Q

• Faecal-oral transmission ex:

A

Entamoeba spp.)

69
Q

trophozoites taken up by blood-sucking of
insects and passed to new hosts when they next feed

A

• Vector-borne transmission

70
Q

zoites encysted within the tissues of a prey
animal (herbivore) being eaten by a predator (carnivore) which
subsequently sheds spores into the environment to be ingested by new
prey animals,

A

Predator-prey transmission

71
Q

Predator-prey transmission ex

A

Toxoplasma

Protozoa (1 decks)

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