Kingdom Protists

Question 1

Origins of protists

Answer 1

we’re the first eukaryotes which evolved from prokaryotes. mitochondria and chloroplasts were thought to be once prokaryotic organisms

Question 2

Importance of protists

Answer 2

• key role as producer for aquatic ecosystem.
• Parasitic pathogens are malaria
• many used as food addictives
  -Seaweed protists have used in toothpaste, ans cosmetics

Question 3

Overal structure of protists

Answer 3

cell structure: unicellular or multicellular, most don’t have cell walls

Locomotion: Some demonstrate locomotion

Reproduction: Asexually (binary fission) and sexually (conjugation)

Mode of nutrition: Photosynthesis, absorb food

Classification: based on nutrients

Question 4

Type of protist: Euglenoids

Answer 4

-unicellular
-1-2 flagella to move
- they are autotrophs and can undergo photosynthesis

Question 5

Type of protists: Ciliates

Answer 5

-unicellular
-no cell wall
-heterotrophs

Question 6

Type of protist: Apicomplexa

Answer 6

-heterotrophs
-unicellular
-no cell wall
-on parasites or animals(can cause malaria)

Question 7

Plasmodium vivax

Answer 7

-infectious disease transmitted through mosquitoes bites
-parasite travels through blood stream to liver, then it enters blood stream where it infects rbc’s causing them to rupture
-when they rupture, they’re more parasites that infect more rbc’s

Question 8

Type of protist: Diatoms

Answer 8

-autotrophs
-move by gliding
-hard outer glass like silica shell

Question 9

Type of protist: Ameoba

Answer 9

-heterotrophs
-unicellular
-move by pseudopods (extensions of cytoplasm)

Question 10

Protists Interactions in ecosystems

Answer 10

-producers or consumers in ecosystem
-algae perform 50-70% of all photosynthesis on earth and produce most oxygen
-warmer and more acidic waters are interfering with their ability to make shells(without them they can’t survive)

Question 11

Types of protists: Algae

Answer 11

-autotrophs, contain chlorophyll
-almost all multicellular
-live in colonies
-cell walls made of cellulose

Question 12

Reproduction in Protists

Answer 12

-Asexually (binary fission)
-sexually (conjugation)

Question 13

Gas exchange in kingdom protista:

Answer 13

weirdly shaped to optimize gas exchange

Question 14

Mitochondria and chloroplasts are thought to have originated by….

Answer 14

endosymbiosis

Question 15

Endosymbiosis occurs when…

Answer 15

one type of cell lives within another type of cell

Question 16

Apicomplexa is a parasite which can cause…

Answer 16

malaria

Question 17

Apicomplexa