Toxoplasma gondii belongs to which group of eukaryotic organisms?

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Question 1 of 5

Toxoplasma gondii belongs to which group of eukaryotic organisms?

Correct Answer: C

Rationale: Toxoplasma gondii is a protozoan parasite known to cause toxoplasmosis. It belongs to the group of eukaryotic organisms called protozoans because it is a single-celled organism with complex cellular structures. Protozoans are characterized by their ability to move and perform essential functions independently. Algae (choice A) are photosynthetic eukaryotic organisms, fungi (choice B) are non-photosynthetic eukaryotes that include molds and yeasts, and helminths (choice D) are multicellular parasitic worms. Therefore, the correct answer is C because Toxoplasma gondii is a protozoan parasite.

Question 2 of 5

A relationship in which one organism benefits and the other is harmed is called:

Correct Answer: B

Rationale: The correct answer is B: parasitism. In parasitism, one organism (parasite) benefits at the expense of the other organism (host). The parasite derives nutrients or resources from the host, causing harm or even death in some cases. This relationship is characterized by asymmetry, where one organism benefits while the other is negatively impacted. Commensalism (A) is a relationship where one organism benefits while the other is unaffected. Synergism (C) is a mutually beneficial relationship where both organisms benefit. Antagonism (D) is a relationship where both organisms are harmed or inhibited.

Question 3 of 5

The most important fungi that cause diseases of the skin, hair, and nails are called:

Correct Answer: C

Rationale: Correct Answer: C: dermatophytes Rationale: 1. Dermatophytes are fungi that specifically infect the skin, hair, and nails. 2. They are the most common fungi causing such infections in humans. 3. Plasmodium and sporozoites are parasites causing malaria, not skin diseases. 4. Nematodes are a type of roundworm and do not typically cause skin, hair, or nail infections. In summary, dermatophytes are the correct answer because they are specialized fungi that commonly cause skin, hair, and nail diseases, distinguishing them from the other choices.

Question 4 of 5

The toxic condition caused by the multiplication of bacteria in the blood is referred to as:

Correct Answer: B

Rationale: The correct answer is B: septicemia. Septicemia specifically refers to the presence of bacteria in the bloodstream, leading to a systemic inflammatory response. Bacteremia (choice A) is simply the presence of bacteria in the blood without the systemic inflammatory response. Shock (choice C) is a state of circulatory collapse, often seen in severe septicemia. Bloodborne infection (choice D) is a general term for infections transmitted through the blood but does not specifically refer to the condition of bacterial multiplication causing toxicity.

Question 5 of 5

Methods typically used to diagnose bacterial infections of the reproductive system include:

Correct Answer: A

Rationale: Step-by-step rationale for choice A being correct: 1. Microscopic examination of discharge from infected organ allows direct visualization of bacteria causing the infection. 2. Microscopic examination of urine for organisms can help identify any bacteria present in the urinary tract. 3. Both methods are specific for diagnosing bacterial infections in the reproductive system. Summary: - Choice B is incorrect as biopsy is invasive and not typically used for diagnosing bacterial infections. - Choice C is incorrect as fecal samples and urine protein tests are not relevant for diagnosing bacterial infections in the reproductive system. - Choice D is incorrect as antibody agglutination and coagulation tests are not primary methods for diagnosing bacterial infections in the reproductive system.

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