Protozoa!

Question 1

name 6 characteristics of protozoa?

Answer 1

65,000 spieces, most non pathogenic+ free living in water
complex life cycle
most unicellular -> colonies rare
locomotive structures
very in shape
typically inhibit water or soil

Question 2

describe protozoa life cycle?

Answer 2

motile feeding stage-> TROPHOZOITE
dormant stage -> CYST
both sexual and asexual stages
most propragate by simple asexual division of trophozoite
many undergo formation of cyst
others have complex life cycles including both sexual and asexual reproduction.

Question 3

describe what a flagella looks like?

Answer 3

looks like a tampon!

Question 4

describe what cilia looks like?

Answer 4

a headgehog

Question 5

describe what a pseudopod looks like?

Answer 5

a blob/ spilt paint

Question 6

describe radiolarians?

Answer 6

ameoboid protozoa with silica based skeleton

found in see as part of zoo plankton

Question 7

describe psudopods

Answer 7

false feet, temporary cell extensions- used for movement, gathering food and protection

Question 8

how are pseudopods formed?

Answer 8

cell membrane pushed in one direction and cytoplasm flows into large bulge this allows movement – drags rest of cell behind it

Question 9

what can pseudopod moments be?

Answer 9

lobular, blunt, branched, filamentous…. it constantly changes shape

Question 10

describe ciliated protozoa

Answer 10

hair like structures help move, get food and sense environment
most non pathogenic
have 2 nuclei - macro and micro
Trophoziotes have cilia.

Question 11

what do trophozoites have ? - - - - -

Answer 11

CILIA

Question 12

what are the 2 nuclei for in cilia’s

Answer 12

one for everyday functions and one for reproduction

Question 13

describe APICOMPLEXA

Answer 13

all parasitic
complex life cycles, many stages and hosts
produce SPAROZIOTES-> for transferring to new host

Trophioziotes move by gliding, flexior and are non motile

Question 14

how do trophioziotes move?

Answer 14

gliding, flexion or are non motile

Question 15

describe and name flagellated protozoa?

Answer 15

motility by flagella alone or by flagella and amoeboid motion

several parasites; 
Giardia
Trichomonas
Trypanasoma
Leishmania

Question 16

describe and name amoeboid protozoa?

Answer 16

amoeba–> psudopods
ENTRAMOEBA HISTOLYTICA–> iniciates dissentry,
carried by 10% of population

Question 17

describe protozoa reproduction?

Answer 17

all asexual- binary fission

Question 18

describe reproduction in cilliates?

Answer 18

sexual reproduction called conjugation takes place.

2 join and exchange genetic material

Question 19

describe pathogenic protozoa

Answer 19

most not pathogens

some = animal parasites= travel by insect vectors

Question 20

define zoonoses

Answer 20

when animals infect humans

Question 21

describe Giardia Lambda

Answer 21

intestinal parasite
2 nuclei and sucking discs
tear drop shape
multiple flagella and internal filaments
spread through contaminated water
causes mucus filled faeces 
also called Hitch hikers diarrhoea

Question 22

describe malaria

Answer 22

caused plasmodium species
transmitted by female anopheles mosquito
intracellular and extracellular stages
complex life cycle
intense cold feeling then dry sweat can cause anaemia
complications include 
acute renal failure
cerebral malaria 
liver damage

Question 23

describe complications with malaria

Answer 23

acute renal failure,
cerebral malaria
liver damage

Question 24

what causes malaria

Answer 24

plasmodium species, carried by female anopheles species