Protist (Protozoa)

Question 1

What are the Characteristics of Protists

Answer 1

• Eukaryotic
• Unicellular/Multicellular
• Heterotroph/Autotroph
• With/Without Cell Wall
• Free Living/Parasites
• Mostly Lives in Water

Question 2

What are the 3 groups that Protists are divided into

Answer 2

1. Animal-Like Protist: Protozoa
2. Plant-Like Protist: Algae
3. Fungi-Like Protist: Slime-mold

Question 3

What are the characteristics of a Protozoa

Answer 3

• Unicellular
• No Cell Wall
• Heterotroph
• Free Living/Parasites
• Mostly has moving tools

Question 4

What are Protozoa’s Divided based on

Answer 4

They are divided into 4 based on its moving tools

Question 4

What are the 4 types of Protozoa’s

Answer 4

Rhizopoda, Ciliates, Flagellates, Sporozoa

Question 5

What is the moving tool of a Rhizopoda and what are its characteristics?

Answer 5

• Pseudopodia: moving by water movement in their cell
• Amoeboid (No definite body shape)
• Phagocytosis (Engulfing the food molecules)
• Reproduce by Binary Fission
• Has cell membrane, without cell wall

Question 6

Examples of Rhizopoda are

Answer 6

• Amoeba
• Foraminifera: Oil Indicator, Cytoskeleton made from CaCO3 (Cytoskeleton helps them withstand the pressure in water)
• Radiolaria: Oil indicator, Cytoskeleton made from Silica

Question 7

What is the moving tool of a Ciliates and what are its characteristics?

Answer 7

• Cilia: Moving by hair
• Asexual Reproduction: Binary Fission
• Sexual Reproduction: Conjugation
• Mostly are free living, some are parasites

Question 8

Example of Ciliates are

Answer 8

• Paramecium

Question 9

What is the moving tool of a Flagellates and what are its characteristics?

Answer 9

• Flagella: Moves by flagella (Tail)
• Asexual Reproduction: Binary Fission
• Most Heterotrophs, Few are Autotrophs (Photosynthesis)
• Most Parasites, Few Free Living

Question 10

What is the moving tool of Sporozoans and what are its characteristics?

Answer 10

• No moving Tools
• They move by following the blood stream
• Parasites because the depend on other living things

Question 11

Example of Sporozoans are

Answer 11

• Plasmodium (The cause of Malaria, Live inside Anopheles Mosquitos)

Question 12

What is the first stage in the Life Cycle of Plasmodium and what happens in the stage?

Answer 12

The first stage in the life cycle is when the Plasmodium is a Sporozoit.

The mosquito with the Sporozoit bites a human and then it goes to the liver cells, destroy liver, and release as merozoit from liver.

Question 13

What is the second stage in the Life Cycle of Plasmodium and what happens in the stage?

Answer 13

The second stage is when the Plasmodium is a Merozoit.

The Merozoit goes to the Red Blood Cells of a human and destroys the Red Blood Cells, making itself bigger from feeding off of the nutrients

Question 14

What is the third stage in the Life Cycle of Plasmodium and what happens in the stage?

Answer 14

The third stage is when the Plasmodium is a Tropozoit

The Tropozoit continues goin to other red blood cells and destroys it as it becomes bigger from feeding off of the nutrients

Question 15

What is the fourth stage in the Life Cycle of Plasmodium and what happens in the stage?

Answer 15

The fourth stage is when the Plasmodium is a Gametocyte (It becomes either Male or Female)

The Gametocyte will be in the Blood of the human. Then another Anopheles mosquito will bite it and it enters the mosquito. The Gametocytes will reproduce sexually inside the mosquito.

Question 16

What is the fifth stage in the Life Cycle of Plasmodium and what happens in the stage?

Answer 16

The fifth stage is when the Plasmodium is a Oocyst (They would be in the digestive tract of the mosquito).

The Oocyst will travel to the salivary glands and will stay and develop into Sporozoit. This means that the New mosquito will have the sporozoit and when it bites another human the cycle will start over and spread everywhere.