Lecture 8 - Protozoa

Question 1

• all unicellular and eukaryotic
• all chemoheterotrophs and holozoic

Answer 1

protozoa

Question 2

• require organic materials, which may be particulate or in solution
• obtaining nourishment by feeding on plants or other animals

Answer 2

holozoic

Question 3

reproduction of protozoa

Answer 3

• sexually
• asexually

Question 4

protozoans are mostly

Answer 4

aerobic

Question 5

covering of protozoa

Answer 5

pellicle

Question 6

where does digestion occur in protozoans

Answer 6

vacuoles

Question 7

where does excretion occur in protozoans

Answer 7

anal pore

Question 8

vegetative stage which feeds upon bacteria and pariculate nutrients

Answer 8

trophozoite

Question 9

some protozoa produce a protectivve capsule under adverse conditions

Answer 9

cyst

Question 10

two stages of protozoa

Answer 10

1. trophozoite
2. cyst

Question 11

classification of protozoa based on mode of locomotion

Answer 11

1. amoeboids
2. ciliates
3. sporozoa
4. flagellates

Question 12

amoeboids

Answer 12

pseudopodia

Question 13

ciliates

Answer 13

cilia

Question 14

sporozoa

Answer 14

non-motile

Question 15

flagellates

Answer 15

flagella

Question 16

Protozoans

Answer 16

1. archaezoa
2. apicomplexa
3. amoebozoa
4. ciliphora
5. euglenozoa

Question 17

• lack mitochondria
• spindle shaped
• flagella on front end
• common symbionts in animal GI

Answer 17

archaezoa

Question 18

examples of archaezoa

Answer 18

1. Giardia (diarrhea)
2. Trichomonas (STD vaginitis, urethritis)

Question 19

diarrhea

Answer 19

Giardia

Question 20

STD vaginitis, urethritis

Answer 20

Trichomonas

Question 21

• non motile in mature form
• complex organelles at apex house enzymes
• obligate intracellular parasites
• usually transmitted by insects
• usually complex life cycle with different stages in different hosts

Answer 21

apicomplexa

Question 22

example of apicomplexa

Answer 22

Plasmodium (malaria)

Question 23

malaria

Answer 23

Plasmodium vivax

Question 24

• move via pseudopods
• also referred to as Sarcodina
• binary fission
• most are free-living
• some are pathogenic

Answer 24

amoebozoa

Question 25

example of amoebozoa

Answer 25

Entamoeba (amoebic dysentery)

Question 26

amoebic dysentery

Answer 26

Entamoeba

Question 27

difference between pathogen and parasite

Answer 27

Pathogen =causes diseases to the host after infection

Parasite = organism that lives on or in another organism of another species

Question 28

• move via cilia
• only one pathogen in group

Answer 28

ciliophora

Question 29

example of ciliophora

Answer 29

Paramecium

Question 30

only one pathogen in ciliophora

Answer 30

Balantidium coli

Question 31

• move via flagella
• no sexual reproduction

Answer 31

euglenozoa

Question 32

two groups of euglenozoa

Answer 32

1. euglenoids
2. hemoflagellates

Question 33

• have pellicle
• has flagella and eye spot
• has chlorophyll
• photoautotroph or chemoheterotrph
• intermediate between algae and protozoa

Answer 33

euglenoids

Question 34

flagella of euglenozoa

Answer 34

zooflagellates

Question 35

• transmitted by biting insects
• live in host blood
• long slender cells with undulating membrane and flagellum

Answer 35

hemoflagellates

Question 36

example of hemoflagellates

Answer 36

Trypansoma (African sleeping sickness)

Question 37

Euglenoids are sometimes grouped into what

Answer 37

flagellated, unicellular algae