Lab 2- Entamoeba

Question 1

Kingdom of entamoeba

Answer 1

Animalia

Question 2

Phylum of Entamoeba

Answer 2

Sarcodina

Question 3

Disease caused by entamoeba

Answer 3

Amoebiasis

Question 4

How are they spread?

Answer 4

Through drinking water contaminated with cysts

Question 5

What do the cysts release?

Answer 5

Trophozoites

Question 6

What do trophozoites feed on?

Answer 6

Particulates in host’s gut

Question 7

How do trophozoites multiply?

Answer 7

Binary fission

Question 8

How are trophozoites released?

Answer 8

By passing through feces

Question 9

When do trophozoites become cysts?

Answer 9

When they pass through feces

Question 10

How long can cysts remain infective outside host’s body?

Answer 10

~2 weeks

Question 11

Name a pathogenic species of Entamoeba

Answer 11

E. histolytica

Question 12

Why is E. histolytica dangerous?

Answer 12

It can lyse host tissues and go deeper in them.

Question 13

Does Entamoeba coli have eccentric or central endosomes?

Answer 13

eccentric

Question 14

Does Entamoeba histolytica have eccentric or central endosomes?

Answer 14

central

Question 15

Do trophozoites divide inside cyst?

Answer 15

Yes

Question 16

Chromatin lining nuclear membrane of E. coli: coarse or fine

Answer 16

coarse

Question 17

Chromatin lining nuclear membrane of E. histolytica: coarse or fine

Answer 17

fine

Question 18

How do entamoebas move?

Answer 18

By using pseudopods