Sophia - Human Biology - Unit 4 Challenge 4.
1 — Lymphatic System
Identify the major structures and function of the lymphatic system.
Which of the
... [Show More] following is a function of the lymphatic system?
• a.) Circulating nutrients to various organs
• b.) Sending signals from the brain to the extremities
• c.) Returning excess fluid to the circulatory system
• d.) Pumping blood through the body
2 — Pathogens
Determine how the human body protects itself from pathogens.
Which of the following statements about innate immunity is true?
• a.) Innate immunity involves a targeted response against pathogens the body has fought before
• b.) Innate immunity describes how physical barriers prevent many pathogens from entering the body
• c.) Innate immunity is a generalized response that does not target specific pathogens
• d.) Innate immunity means a type of pathogen doesn't have any effect on the human body
3 — Innate Immunity
Identify the characteristics of the body's second line of defense against pathogens.
A fever is an example of what kind of defense against pathogens?
• a.) Adaptive immunity
• b.) Innate immunity
• c.) All answer choices are correct
• d.) Physical barriers
4 — Adaptive Immunity
Identify the characteristics of the body's third line of defense against pathogens.
Which of the following is a characteristic of adaptive immunity?
• a.) It involves the complement system, which causes damage to pathogens.
• b.) It relies on lysosomes to break down pathogens.
• c.) Innate immunity is one type of adaptive immunity.
• d.) It comes into play once a pathogen gets past the body's more general immune responses.
5 — Humoral Immunity
Understand an antibody-mediated immune response.
Which set of facts is true for humoral immunity?
• a.) It is an adaptive response.
it is mediated by T-cells in the thymus.
• b.) It is a non-specific response.
It is mediated by macrophages.
• c.) It is an adaptive response.
It is mediated by B-cells in lymph nodes.
• d.) It is an innate response.
It is mediated by B-cells in lymph nodes.
6 — Cell-Mediated Response
Identify characteristics of a cell-mediated immune response.
What is apoptosis?
• a.) Death of a cell from old age
• b.) The intentional death of a cell
• c.) The accidental death of a cell
• d.) Death of a cell after dividing
7 — Organ Transplant and Immunotherapy
Determine why a persons body might either accept or reject a transplanted tissue or organ.
Which cells would be activated in response to the drug Herceptin being added to a cell containing HER2 protein?
• a.) Natural killer cells
• b.) Myeloma cells
• c.) Memory cells
• d.) Spleen cells
8 — Vaccines
Understand how a vaccine can be used to prevent certain diseases.
Which of the following statements about vaccines is true?
• a.) A vaccine marks invading viruses the body wouldn't otherwise notice for destruction.
• b.) Vaccines prevent the production of memory cells, making it difficult for disease to spread.
• c.) Vaccines use dead or weakened antigens to produce antibodies, known as active immunity.
• d.) A booster shot is used to elicit a primary immune response in which the body produces antibodies against a particular pathogen.
9 — Immune System Disorders and HIV/AIDS
Identify several immune system disorders.
Rheumatoid arthritis is an example of what type of disorder?
• a.) Could be any
• b.) Allergy
• c.) Immunodeficiency
• d.) Autoimmune disorder
10 — Cancer and Homeostasis
Identify causes and treatments of cancer.
Which of the following describes cancer?
• a.) A bacteria that reprograms cells to make them cancerous
• b.) Cells not dividing fast enough to replace themselves
• c.) The uncontrollable division of cells
• d.) The body's immune system attacking its own cells [Show Less]