General Features of Protozoa

Question 1

Organisms in Protozoa are:

a. single-celled, prokaryotic
b. multicellular, eukaryotic
c. single-celled, eukaryotic
d. None of the above

Answer 1

c. single-celled, eukaryotic

Question 2

True or False: Protozoa can reproduce both sexually and asexually.

Answer 2

True

Question 3

What is the purpose of encystation?

a. protection against unfavorable external environmental conditions
b. nuclear division
c. parasite transmission
d. all of the above

Answer 3

d. all of the above

Question 4

What is the size of Protozoa?

a. 1-100 micrometers
b. 1-150 micrometers
c. 1-10 micrometers
d. 1-120 micrometers

Answer 4

b. 1-150 micrometers

Question 5

How are microtubules within axoneme of motile flagella/cilia organized?

a. 7+2
b. 3+9
c. 2+7
d. 9+2

Answer 5

d. 9+2

Question 6

True or False. Well-defined nuclei bounded by nuclear envelopes are characteristic of ALL protozoa

Answer 6

True

Question 7

True or False: If you encounter an organism that has a macronucleus and a micronucleus, you can tell that you are NOT dealing with a ciliate.

Answer 7

False

Question 8

Members of the phylum Sarcomastigophora have: a. Cilia

b. Cilia and/or Flagella
c. Flagella and/or Pseudopodia
d. Pseudopodia and/or Cilia

Answer 8

c. Flagella and/or Pseudopodia

Question 9

Members of the sub-phylum Sarcodina have which characteristic?

a. contain many cilia and flagella
b. contain a cell wall
c. have Sex pili
d. usage of pseudopods for locomotion

Answer 9

d. usage of pseudopods for locomotion

Question 10

During asexual reproduction in Protozoa, the process of fission takes place in which sequence? a. cytoplasm, organelles, nucleus

b. nucleus, organelles, cytoplasm
c. organelles, nucleus, cytoplasm
d. nucleolus, cytoplasm, organelles

Answer 10

c. organelles, nucleus, cytoplasm

Question 11

Why is the fatality rate for those infected with Naegleria fowleri so high?

a. Death occurs only a few days after symptoms surface
b. Most diagnoses are made post mortem
c. Treatment options are few and provide limited effectiveness
d. All of the above

Answer 11

d. All of the above

Question 12

Which of the following protozoans are particularly notorious for causing primary amoebic meningoencephalitis?

a. Acanthomoeba spp.
b. Naegleria fowleri
c. Hartmanella spp.
d. None of the above

Answer 12

b. Naegleria fowleri

Question 13

Which enzymes are located within dynein arms of an axoneme?

a. ATPases
b. lipases
c. kinases
d. phosphatase

Answer 13

a. ATPases

Question 14

Which of the following are true about cysts:
I) They are the infective or transmissible form of parasite.
II) They protect against unfavorable external environmental conditions.
III) They are the site for morphogenesis and nuclear division.

a) I only
b) II only
c) I and II only
d) I, II, and III

Answer 14

d)I, II, and III

Question 15

True or False. Endodyogeny is a specialized sexual reproduction involving nuclear exchange and union after cells join.

Answer 15

False

Question 16

Which of the following processes does not involve sexual reproduction?

a. Conjugation
b. Syngamy
c. Schizogony
d. All processes above involve sexual reproduction

Answer 16

c. Schizogony

Question 17

Match the following: [Costa] [Pelta] [Axostyle]

1. Crescent shaped membrane
2. Rodlik structure that runs along the base of the undulating membrane
3. Supporting structure embedded along the longitudinal axis on the cytoplasm

Answer 17

[Pelta] 1. Crescent shaped membrane
[Costa] 2. Rodlike structure that runs along the base of the undulating membrane [Axostyle] 3. Supporting structure embedded along the longitudinal axis on the cytoplasm