Protozoa BIO 299 Flashcards

A set of practice questions and answers covering the protozoan species, laboratory slides, and morphological features discussed in BIO 299.

Which species are listed under the phylum Sarcomastigophora in the lecture slides?

Entamoeba histolytica, Naegleria sp., Trypanosoma cruzi, Giardia lamblia, and Trichomonas vaginalis.

What two life stages of Entamoeba histolytica are depicted in Slide #1 and Slide #2?

Cyst and trophozoite.

What are the characteristics of the nuclei in Naegleria fowleri trophozoites according to Slide #3?

The nuclei lack peripheral chromatin; one ameboid trophozoite has a single nucleus with a large karyosome, while another is binucleate.

How is Trypanosoma cruzi presented in Slide #4?

In a blood smear.

What structures are noted for the Giardia lamblia trophozoite in Slide #6?

Nuclei.

What identifying features are labeled for Trichomonas vaginalis in Slide #7?

Nucleus and Flagella.

Which protozoan belongs to the phylum Cilliophora in Slides #8 and #9?

Balantidium coli.

What is a distinguishing feature of the Balantidium coli cyst in Slide #8?

A macronucleus.

What features are prominent on the Balantidium coli trophozoite in Slide #9?

Surface cilia and a macronucleus.

Which stage of Plasmodium falciparum is shown in a blood smear with infected RBCs in Slide #10?

Ring stage.

What specific stage of plasmodium malariae is observed in Slide #12?

Mature shizont.

Which species is featured in Slide #13?

Babesia cains.

What two types of Toxoplasma gondii samples are described in Slides #14 and #15?

Toxoplasma gondii – trophozoite and Toxoplasma gondii – (intestinal sec).

What is the source of the Naegleria fowleri smear mentioned in the notes?

From culture using a trichrome stain and oil immersion.