Protists (Protozoa) Worksheet

Which of the following is true about the cell wall of protists (protozoa)?

• They have a rigid cell wall like plants

• They have a peptidoglycan cell wall like bacteria

• They lack a cell wall

• They have a cellulose-based cell wall like fungi

Tags

NGSS.MS-LS4-2

What type of cell are protists (protozoa) composed of?

• Prokaryotic

• Eukaryotic

• Acellular

• Archaea

What describes the mode of nutrition in protists (protozoa)?

• All protists are photoautotrophs

• Most parasitic species are chemoheterotrophs, but some photoautotrophs can cause disease through toxins

• All protists are chemoautotrophs

• Protists obtain nutrients only by photosynthesis

Tags

NGSS.MS-LS1-6

What are the oxygen requirements of protists (protozoa)?

• Only aerobes

• Only obligate anaerobes

• Only facultative anaerobes

• They can be aerobes, obligate anaerobes, or facultative anaerobes

Tags

NGSS.MS-LS2-1

Which statement correctly describes protists (protozoa)?

• They are the youngest and least diverse group of eukaryotes

• They are prokaryotes with a simple cell structure

• They are the oldest and most diverse group of eukaryotes

• They are multicellular organisms with no nucleus

Tags

NGSS.MS-LS4-2

What is true about the cellular organization of most protists (protozoa)?

• Most protists are multicellular

• Most protists are unicellular

• All protists are acellular

• Protists are only colonial organisms

Tags

NGSS.MS-LS1-1

Which protist causes malaria, and how is it transmitted to humans?

• A) Trypanosoma; transmitted by tsetse flies

• B) Plasmodium; transmitted by Anopheles mosquitoes

• C) Toxoplasma; transmitted by cats

• D) Giardia; transmitted by contaminated water

Plasmodium is classified in which protist group, and what are its key characteristics?

• Euglenozoa; motile and photosynthetic

• Apicomplexa; non-motile in mature forms and obligate intracellular parasites

• Amoebozoa; move by pseudopodia

• Ciliates; move by cilia and reproduce by binary fission

Which of the following are disease-causing species in the Apicomplexa protist group?

• A) Giardia lamblia, Euglena, Plasmodium falciparum, Entamoeba histolytica

• B) Babesia microti, Cyclospora cayetanensis, Toxoplasma gondii, Cryptosporidium parvum

• C) Trypanosoma brucei, Leishmania donovani, Trichomonas vaginalis, Naegleria fowleri

• D) Ascaris lumbricoides, Taenia solium, Schistosoma mansoni, Enterobius vermicularis

Trypanosoma species belong to which larger protist group and have what distinctive feature?

• Apicomplexa; non-motile in mature forms

• Excavata; a characteristic “feeding groove” on the cell surface

• Amoebozoa; move using pseudopodia

• Ciliates; covered in cilia for movement

Tags

NGSS.MS-LS4-2