Lesson 4.2: Protozoa

Question 1

Asexual reproduction beginning as a protruberance from the parent cell that grows to become a daughter cell

Answer 1

Budding

Question 2

An asexual reproduction where there is multiple fission; the nucleus undergoes multiple divisions before the cell divides.

Answer 2

Schizogony

Question 3

An asexual reproduction where there is multiple fission; the nucleus undergoes multiple divisions before the cell divides.

Answer 3

Schizogony

Question 4

2 kinds Sexual reporduction of a protozoa

Answer 4

1. Conjugation
2. Syngamy

Question 5

Sexual reporduction where two cells fuse, and a haploid nucleus (micronucleus) from each cell migrates to the other cell.

Answer 5

Conjugation

Question 6

Haploid nucleus

Answer 6

Micronucleus

Question 7

Process of protozoan conjugation

Answer 7

1. Haploid micronucleus fuses with the haploid micronucleus within the cell
2. Parent cells separate, each now a fertilized cell
3. When cells divide, they producd daughter cells with recombined DNA

Question 8

A sexual reporduction where the protozoan produce gametes (gametocytes), which are haploid sex cells. During reproduction, two gametes fuse to form a diploid zygote.

Answer 8

Syngamy

Question 9

Other term for gametes that some protozoa produce, which are haploid sex cells

Answer 9

Gametocytes

Question 10

What is formed when 2 gametes are fused during syngamy?

Answer 10

Diploid zygote

Question 11

Process by which a protozoa produces a protective capsule called cyst

Answer 11

Encystment

Question 12

Protective capsule produced by some protozoa

Answer 12

Cyst

Question 13

What permits the organism to survive when food, moisture, or oxygen are lacking, when temperature are not suitable, or when toxic chemicals are present?

Answer 13

Cyst

Question 14

Cystbformed by members of the phylum apicomplexa

Answer 14

Oocyst

Question 15

Nutrition of a protozoa

Answer 15

Mostly aerobic heterotrophs

Question 16

Protective layer of some protozoa that causes them to require specialized structures to take in food

Answer 16

Pellicle

Question 17

Takes in food by waving their cilia toward a mouth-like opening

Answer 17

Ciliates

Question 18

Mouth-like openings of a ciliate

Answer 18

Cytostome

Question 19

How does ameoba eat?

Answer 19

Engulfs food bu surrounding it with pseudopods and phagocytizing it

Question 20

Where does digestion takes place in all protozoa

Answer 20

In a membrane-closed vacuoles

Question 21

Where does the waste of a protozoa eliminated?

Answer 21

Plasma membrane or anal pore

Question 22

A single-celled eukaryotes sith a feeding groove in the cytoskeleton and are spindle-shaped and possess flagella

Answer 22

Euglenozoa

Question 23

Two phyla of a euglenozoa that lack mitochondria

Answer 23

Diplomonads and Parabasalids

Question 24

Are euglenoids chemoautotrophs or photoautotrophs, or both

Answer 24

Both

Question 25

A semi-rigid plasma membrane of a euglenoids that moves by means of a flagellumnat the anterior end

Answer 25

Pellicle

Question 26

What do most euglenoids have at the anterior end

Answer 26

Red eyespot

Question 27

What does the euglenoid, a carotenoid-containing organelle, use to sensenlight and direct the cell in the appropriate direction

Answer 27

Preemergent flagellum

Question 28

Moves by extending blunt, lobe like projections of the cytoplasm

Answer 28

Amebae

Question 29

Lobe like projections of the cytoplasm of an amebae

Answer 29

Pseudopods

Question 30

Protoza that are not motile in their mature forms and are obligate intercellular parasites

Answer 30

Apicomplexa

Question 31

Apicomplexa lns are characterized by the presence of complex special organelles at the _____ of their cells

Answer 31

Apex

Question 32

ApicL complexes

Answer 32

Rhoptries, micronemes, and dense granules

Question 33

What does an apicomplexa involve that make their life cycle complex

Answer 33

Transmission between several hosts

Question 34

Have cilia that are arranged in precise rows on the cell. They are moved in unison to propel the cell through its environment and to bring food particles to the mouth

Answer 34

Ciliates

Question 35

A kind of ciliate that has a specialized structures for ingestion (cytosome), elimination of waste (anal pore), and the regulation of osmotic pressure (contractile vacuoles)

Answer 35

Paramecium