Protozoa

Question 1

Kinetoplast

Answer 1

Disc shaped mass of mitochondrial DNA located next to the kinetosome at the base of the flagella

Question 2

Ammonotelic

Answer 2

Excrete nitrogen in ammonia

Most diffuses through the cell membrane

Question 3

Merogony

Answer 3

Asexual reproduction (results in multiple daughter cells)

Question 4

Schizogony

Answer 4

Nucleus replicates multiple times before actually splitting the cell (cytokinesis)

Question 5

Gametogony

Answer 5

Formation of gametes (sexual phase)

Question 6

Sporogony

Answer 6

Formation and maturation of infective stage

Question 7

Definitive Host

Answer 7

One on which the parasite reaches sexual maturity

Question 8

Intermediate Host

Answer 8

One that is required for parasite development but one in which the parasite does not reach sexual maturity

Question 9

Schizont

Answer 9

Cell undergoing schizogony

Question 10

Merozoite

Answer 10

Produced by schizogony and capable of starting a new sexual or asexual cycle of development

Question 11

Karyomastigont

Answer 11

Characteristic of certain protozoa in which the mastigont system is associated with the nucleus

Question 12

Isogametes

Answer 12

A gamete indistinguishable in form, size, or behaviour from another gamete with which it can unite to form a zygote

Question 13

Anisogametes

Answer 13

A gamete differing in size or structure from the one with which it unites

Question 14

Trophozoite

Answer 14

A growing stage in the life cycle of some sporozoan parasites, when they are absorbing nutrients from the host

Question 15

Syngamy

Answer 15

The fusion of two cells, or of their nuclei, in reproduction

Question 16

6 basic morphological forms of trypanosomes

Answer 16

1. Amastigote (spheroid, short flagella projecting just above the flagellar pocket, definitive form for Leishmania in host)
2. Choanomastigote (flagella emerges from collar, KS and KP anterior to nucleus)
3. Promastigote (flagella extends forward, KS and KP anterior to nucleus)
4. Opisthomastigote (KP and KS found POSTERIOR to nucleus, long flagellar pocket, no undulating membrane)
5. Epimastogote (KP and KS anterior, short undulating membrane along basal or proximal part of flagellum)
6. Trypomastigote (KP and KS near posterior, flagella runs along surface of body (undulating membrane) and continues as a whip anterior to the body)

Question 17

Cytostome

Answer 17

Cell mouth
Part of a cell specialized for phagocytosis, usually in the form of a microtubule-supported funnel or groove
Food is directed into the cytostome and sealed into vacuoles