Which is an example of a 1st line of defense barrier? 1.fever speeds up the metabolism of our immune cells 2.macrophages engulf pathogens 3.mucus traps organisms in our mucous membranes 4.B and T cells target specific pathogens for destruction
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- Which is an example of a 1st line of defense barrier? mucus traps organisms in our mucous membranes fever speeds up the metabolism of our immune cells B and T cells target specific pathogens for destruction macrophages engulf pathogensHumoral immunity is the part of the adaptive immune system involving: A.cytotoxic T cells killing infected host cells B.neutrophils eating bacteria C.B cells making antibodies to target the invading pathogen D.Your skin cells protecting you from infection with the acidic pH on the surfaceWhich part of the immune system makes it unlikely for you to get chicken pox more than once? O a. Complement system O b. Adaptive immune response O c. Physical barriers Od. Chemical barriers
- What types of immune responses are part of your innate defence system? Select all that apply. a. Physical barriers like skin b. Defensive cells like phagocytes c. Memory cells d. Inflammation Oe. FeverDecreased immunity is a symptom of HIV/AIDS. This is caused by which of the following? Select one: a. HIV destroys antigens. This decreases the possibility of recognizing pathogens in the future. b. HIV destroys memory T cells. If the body is infected again, there is no antibodies to fight an infection. c. HIV attacks the macrophages. Pathogens cannot be destroyed once they enter the body. d. HIV attacks the helper T cells. This allows pathogen cells to enter the body unnoticed.In an immune response, what is the main function of the circulatory system? to produce inflammation and activate B cells to send chemical signals and transport immune cells to stimulate infected cells and release interferons to trap pathogens and attract phagocytes
- #18 Match the word with its job in our immune system (match each letter to the right number below) A.helper T cells B.B cells C.Cytotoxic T cells D.memory B and T cells -------------------------- 1.find and destroy specific pathogens 2. retain information about a specific pathogen to launch quick response if the pathogen returns 3. activate B and T cells in our 3rd line of defense 4. some are responsible for making antibodies 5. a physical barrier that prevents pathogens from entering the bodyWhat is the function of cytotoxic T-cells? Select one: a. They are long lived cells that provide life long immunity b. They kill cells that have the antigen they recognize c. They pump out chemical weapons & stimulate other T & B cells d. They produce and secrete antibodiesWhich best describes the role of innate immunity? * It protects the body from foreign invaders. It is present in all organisms and helps improve the body’s defense system. It is nonspecific and attacks a broad range of pathogens. It is involved in defending the body against infection. No answer
- The role of antibodies in the human body is to A stimulate pathogen reproduction to produce additional white blood cells B increase the production of guard cells to defend against pathogens C promote the production of antigens to stimulate an immune response D recognize foreign antigens and mark them for destructionWhat is the function of memory T-cells? Select one: a. Pump out chemical weapons and stimulate other T & B cells b. Release chemicals to attack and kill foreign invaders immediately c. Produce free antibodies to marked “remembered” foreign invaders d. Live a long time to be ready to fight future/repeated infections of “remembered" antigen foreign invadersWhat are the roles of the innate immune system? Select all that apply. A. identity self vs. non-self B. provide a physical barrier to infection C. initiate inflammation D. suppress proliferation E. call for help from the adaptive immune system F. circulate fluids through the lymphatic system