Algae: Uses and Importance

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Questions and Answers

Which of the following flagellates causes African sleeping sickness in humans?

  • Trichomonas vaginalis
  • Giardia intestinalis
  • Plasmodium spp.
  • Trypanosoma brucei (correct)

What is the characteristic motion of flagella?

  • Pendulum-like motion
  • Circular motion
  • Wavelike motion (correct)
  • Pulsating motion

Which of the following protozoa lack pseudopodia, flagella, or cilia?

  • Flagellates
  • Ciliates
  • Sporozoa (correct)
  • Amoeboids

What is the disease caused by the flagellate Giardia intestinalis?

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

Which of the following is a vector for transmitting malarial parasites?

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

In which areas of the world is malaria commonly found?

<p>In many areas of the world, but not in the United States (D)</p> Signup and view all the answers

What is the main difference between the structure of fungi and bacteria?

<p>Fungi are eukaryotic, while bacteria are prokaryotic (B)</p> Signup and view all the answers

What is the term for the mass of intertwined filaments in fungi?

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

Which type of fungi have hyphae with cytoplasm divided into cells by cross-walls?

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

How are sexual spores produced in fungi?

<p>By the fusion of two gametes (D)</p> Signup and view all the answers

What is the main characteristic of aseptate hyphae?

<p>The presence of multiple nuclei (B)</p> Signup and view all the answers

How are fungi classified taxonomically?

<p>According to the type of sexual spore they produce (C)</p> Signup and view all the answers

What percentage of algae is made up of oil?

<p>50% (C)</p> Signup and view all the answers

What is the primary source of agar used in laboratory culture media?

<p>Red marine algae (C)</p> Signup and view all the answers

What is the name of the disease caused by the Prototheca genus of algae?

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

What type of system can Prototheca algae enter and cause a debilitating infection?

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

What is the primary issue caused by algae in water systems?

<p>Clogging filters and pipes (A)</p> Signup and view all the answers

In which kingdom of the Five Kingdom System of Classification are algae and protozoa classified?

<p>Protista (C)</p> Signup and view all the answers

What is the process by which an ameba moves?

<p>Ameboid movement (C)</p> Signup and view all the answers

Which type of protozoan is the most complex?

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

What is the function of lysosomes in the process of digestion in amebae?

<p>To release digestive enzymes (B)</p> Signup and view all the answers

What is the mode of transmission of Balantidium coli to humans?

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

Which type of protozoan is characterized by the presence of whiplike flagella?

<p>Flagellated protozoa (C)</p> Signup and view all the answers

What is the function of the basal body in flagellated protozoa?

<p>To anchor the flagellum (C)</p> Signup and view all the answers

What is the primary source of food for fungi?

<p>Dead and decaying organic matter (A)</p> Signup and view all the answers

What is unique about the cell walls of fungi?

<p>They contain chitin (B)</p> Signup and view all the answers

What is the role of fungi in nature?

<p>Decomposers of organic matter (B)</p> Signup and view all the answers

What is a common mistake people make when categorizing fungi?

<p>Classifying them as plants (D)</p> Signup and view all the answers

What is an example of a product that relies on fungi?

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

What would be a consequence of a world without saprophytes like fungi?

<p>Accumulation of dead plant and animal matter (B)</p> Signup and view all the answers

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