Protozoan Organisms (Unicellular) Trivia Questions

1.

This protozoan can be seen as a trophozoite (left two pics) or a cysts (right) form. Can be detected in *some fecal floats and best seen on oil immersion on a fecal smear. Cyst as squiggly line through center.

Giardia lamblia is a protozoan that can exist in two forms: trophozoite and cyst. The left two pictures show the trophozoite form, while the right picture shows the cyst form. This protozoan can be detected in certain fecal floats and is best observed using oil immersion on a fecal smear. In the cyst form, it appears as a squiggly line through the center.

Explanation

Giardia lamblia is a protozoan that can exist in two forms: trophozoite and cyst. The left two pictures show the trophozoite form, while the right picture shows the cyst form. This protozoan can be detected in certain fecal floats and is best observed using oil immersion on a fecal smear. In the cyst form, it appears as a squiggly line through the center.

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2.

Left two photos are from Dr. O, right photo is from Sean. Small egg that can either have 1 nucleus (unsporulted) or 2 (sporulated). Common name is "Coccidia" This can be seen in both large and small animals and most often causes diarrhea. No specices name needed (one word answer).

Isospora is the correct answer because it is a genus of parasitic protozoa that commonly infects animals and can cause diarrhea. The given information mentions that the small egg can have either 1 nucleus (unsporulated) or 2 nuclei (sporulated), which aligns with the characteristics of Isospora. Additionally, the common name "Coccidia" is also associated with Isospora, further confirming the correctness of the answer.

Explanation

Isospora is the correct answer because it is a genus of parasitic protozoa that commonly infects animals and can cause diarrhea. The given information mentions that the small egg can have either 1 nucleus (unsporulated) or 2 nuclei (sporulated), which aligns with the characteristics of Isospora. Additionally, the common name "Coccidia" is also associated with Isospora, further confirming the correctness of the answer.

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3.

Usually seen near the feathered edge. Parasite is within RBCs. In canine form, usually found in pairs and resemble teardrop shape. The bottom one in left picture is bovis. List the full name for the top one (found in canines).

The correct answer is Babesia canis. Babesia canis is a parasite that is usually seen near the feathered edge and is found within red blood cells. In its canine form, it is usually found in pairs and resembles a teardrop shape. The bottom one in the left picture is a different species called Babesia bovis.

Explanation

The correct answer is Babesia canis. Babesia canis is a parasite that is usually seen near the feathered edge and is found within red blood cells. In its canine form, it is usually found in pairs and resembles a teardrop shape. The bottom one in the left picture is a different species called Babesia bovis.

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4.

Left photo is from Dr.O, right two photos are from Sean. This is a small egg that can either have 1 nucleus (unsporulated) or two nucleus (sporulated). MOST have one operculum/polar plug. Large animal and poultry coccidia. List the one that affects poultry.

Eimeria tenella is the correct answer because it is a type of coccidia that affects poultry. Coccidia are a group of microscopic parasites that can cause diseases in animals, including poultry. Eimeria tenella specifically infects the intestinal tract of chickens, causing a disease called coccidiosis. This disease can lead to diarrhea, weight loss, and even death in severe cases. Therefore, Eimeria tenella is the correct answer when considering the coccidia that affects poultry.

Explanation

Eimeria tenella is the correct answer because it is a type of coccidia that affects poultry. Coccidia are a group of microscopic parasites that can cause diseases in animals, including poultry. Eimeria tenella specifically infects the intestinal tract of chickens, causing a disease called coccidiosis. This disease can lead to diarrhea, weight loss, and even death in severe cases. Therefore, Eimeria tenella is the correct answer when considering the coccidia that affects poultry.

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5.

Another coccidian parasite. It affects cats and dogs but also young calves. List it's name followed by spp.

Cryptosporidium spp. is a coccidian parasite that affects cats, dogs, and young calves. It is a common parasite that can cause gastrointestinal illness in these animals. The term "spp." is used to indicate that there are multiple species within the Cryptosporidium genus, each with its own specific characteristics and host preferences.

Explanation

Cryptosporidium spp. is a coccidian parasite that affects cats, dogs, and young calves. It is a common parasite that can cause gastrointestinal illness in these animals. The term "spp." is used to indicate that there are multiple species within the Cryptosporidium genus, each with its own specific characteristics and host preferences.

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