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Invertebrate Zoology > Protozoans > Flashcards

Protozoans Flashcards

0
Q

Pellicle = ______ + _______

A

Cytoskeleton and cell membrane

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1
Q

Whatbare the three main characteristics of protozoans? (Ground plan)

A

Motile, eukaryotic and multicellular

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2
Q

Cytoskeleton composition

A

Microfilaments, microtubules, and vesicles

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3
Q

Function of alveoli

A

For cell support
-> endoskeleton

For triggering cell response as Ca2+ is stored

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4
Q

Test

A

Skeleton that forms a more or less complete covering whether internal or external

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5
Q

What causes the flagellum to pull rather than push in protozoans?

A

Lateral mastigonemes

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6
Q

All types of nutrition occur in protozoans. T or F?

A

T

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7
Q

Types of nutrition

A

Photosynthesis

Absorption

Predatory

Heterotroph

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8
Q

Trace phagocytosis (general)

A

Food > cytostome > vacuole > cytopharynx > vacuole > lysosome > diffusion of digested stuff on cytoplasm > indigestible material > vacuole > out

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9
Q

Cytostome

A

Mouth

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10
Q

Cytopharynx

A

Specialised microtubular tract for fod

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11
Q

Mechanisms used in osmoregulation

A

Active ion transport and contractile vacuole complex

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12
Q

What composes the contractile vacuole complex?

A

Contractile vacuole and spongiome

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13
Q

Trace the process of osmoregulation in CVC

A

fluid > spongiome > contractile vacuole > pore

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14
Q

Protozoans are dominantly sexually reproductive

A

False

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15
Q

Fission

A

Division of parent into two or more daughter cells

16
Q

Binary fission

A

Division into 2 similar progeny

17
Q

Budding

A

Fission when one progeny is smaller than the other

18
Q

Multiple fission

A

Parent into more than 2 daughter cells

19
Q

Schizogony

A

Multiple fission where divisions of nucleus precede cell division

20
Q

Open spindle

A

Nuclear membrane breaks down

21
Q

Closed spindle

A

Nuclear membrane does not disintegrade on cloning

22
Q

Protozoans utilize closed spindle cloning

A

True

23
Q

Encystment process

A

Secretion of thickened envelope to body

Inactivity

Invertebrate Zoology (1 decks)

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