Pathogens and Human Diseases

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Questions and Answers

Which section of the course provides an overview of the immune system?

  • Section 4
  • Section 1 (correct)
  • Section 2
  • Section 3

What is the study of the systems and mechanisms an organism uses to protect itself called?

  • Biotechnology
  • Immunology (correct)
  • Microbiology
  • Genetics

Which of the following is NOT a tissue of the immune system?

  • Lungs (correct)
  • Thymus
  • Bone marrow
  • Spleen

What are the genes that code for the different components of the immune system called?

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

Which type of immune cell is NOT mentioned in the text?

<p>Natural killer cells (B)</p> Signup and view all the answers

Which tissue is considered the primary immune tissue?

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

Where do T-cells differentiate or mature?

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

Which organ in the lymph system acts as a blood filter?

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

What is the function of lymph nodes?

<p>To activate B-cells (C)</p> Signup and view all the answers

Which immune system is always active and attacks all invaders in the same way?

<p>Non-specific immune system (C)</p> Signup and view all the answers

Which of the following is the correct definition of immunology?

<p>The study of the immune system and its mechanisms (B)</p> Signup and view all the answers

Which of the following is NOT a tissue of the immune system?

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

What is the key function of the immune system?

<p>To protect from both nonself and self-agents (C)</p> Signup and view all the answers

What is a pathogen?

<p>A non-self agent capable of causing disease (A)</p> Signup and view all the answers

Which of the following is a communicable disease?

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

Which type of cell plays a key role in the memory aspect of immunology?

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

What is the role of B-cells in the immune system?

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

What is the main function of helper T-cells?

<p>Create signaling molecules (B)</p> Signup and view all the answers

What do killer T-cells specifically target?

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

What is the difference between the non-specific and specific immune system?

<p>Non-specific immune system is innate, specific immune system evolves (D)</p> Signup and view all the answers

Which type of immune cell is the most abundant in the bloodstream and is responsible for engulfing pathogens?

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

Where are macrophages usually found in the body?

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

What is the role of eosinophils in the immune system?

<p>To secrete cytotoxins that kill pathogens (B)</p> Signup and view all the answers

What is the function of dendritic cells in the immune system?

<p>To present pathogen pieces to T-cells (C)</p> Signup and view all the answers

What are hematopoietic stem cells responsible for?

<p>Becoming mature immune cells (D)</p> Signup and view all the answers

Which type of pathogen is a single-celled organism without a nucleus?

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

Which type of pathogen reproduces by taking over living cells?

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

Which type of pathogen is a simple organism that grows as single cells or thread-like filaments?

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

Which type of pathogen lives in or on another organism and derives nutrients at the host’s expense?

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

Which branch of the immune system is also known as the innate immune system?

<p>Non-specific (C)</p> Signup and view all the answers

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