Lab 1: Protozoa and Porifera - Part 1

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Questions and Answers

Which stage of Plasmodium falciparum is found in the stomach lining of a female mosquito?

  • Sporozoites (correct)
  • Gametocytes
  • Trophozoites
  • Schizonts

What is the shape structure of sporozoites, the infectious form of Plasmodium falciparum to humans?

  • Grape-like cluster
  • Amoeboid shape
  • Sickled (crescent) shape (correct)
  • Ring-like structure

Which stage of Plasmodium falciparum resembles a ring-like structure or even headphone-like structures?

  • Gametocytes
  • Oocysts
  • Schizonts
  • Trophozoites (correct)

What is the feeding form of Plasmodium falciparum which is vacuolated with large chromatin dots and fine yellowish-brown pigment?

<p>Trophozoites (B)</p> Signup and view all the answers

Which stage of Plasmodium falciparum contains several newly produced merozoites arranged in a grape-like cluster?

<p>Schizonts (A)</p> Signup and view all the answers

What is the unusual cellular organization characteristic of sponges?

<p><strong>Similar cells not organized into defined tissues or organs</strong> (A)</p> Signup and view all the answers

What type of protists are protozoans?

<p>Heterotrophic (D)</p> Signup and view all the answers

Why are protozoans only found in wet habitats?

<p>To exploit moist microhabitats (D)</p> Signup and view all the answers

Which protozoan causes malaria?

<p>Plasmodium (A)</p> Signup and view all the answers

How do protozoans reproduce?

<p>Binary fission (A)</p> Signup and view all the answers

What vital functions can protozoans perform?

<p>Move, digest, breathe, excrete waste, and reproduce (D)</p> Signup and view all the answers

Why are protozoans described as the apex of single cell complexity?

<p>Their single cell can perform all vital functions (D)</p> Signup and view all the answers

How are endoparasites defined?

<p>Parasites living inside their host's tissues or organs (B)</p> Signup and view all the answers

What is the vector for Plasmodium falciparum?

<p>Anopheles mosquitoes (A)</p> Signup and view all the answers

Which species of Plasmodium accounts for about 50% of malaria cases?

<p>Plasmodium falciparum (B)</p> Signup and view all the answers

How is malaria contracted?

<p>Through the bites of female Anopheles mosquitoes infected by Plasmodium sp. parasites (A)</p> Signup and view all the answers

What process is responsible for the reproduction of Plasmodium?

<p>Asexual reproduction (A)</p> Signup and view all the answers

What is a characteristic of the life cycle of endoparasites like Plasmodium?

<p>Well synchronized with their host and vector (B)</p> Signup and view all the answers

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