1 Bacteria, viruses and other organisms that cause infectious diseases are called ____.A) pathogens B) vectors C) pandemics D) antibiotics 2 An epidemic that spreads across a large country, continent, or the entire globe is described as ____.A) a vector B) hyper infectious C) a reservoir D) pandemic 3 What experimental steps are being utilized here? (31.0K)
A) antibiotic theory B) isolation theory C) Koch's postulates D) mouse postulates 4 Which of these is not a primary function of the immune system represented here? (37.0K)
A) destroys foreign microorganisms B) handles all nonspecific immune responses C) filters blood D) absorbs fat 5 A (an) ____ is a protein secreted by a virus-infected cell as an immune response.A) macrophage B) lymphocytes C) interferon D) B cell 6 Long-living cells that are exposed to a pathogen during the primary immune response are called ____.A) memory cells B) cytotoxic T cells C) lymph cells D) primary cells 7 What are three types of nonspecific immunity?A) lymph nodes, cytotoxic T cells B) lymphocytes, antibodies, T cells C) skin, saliva, mucus D) lymphocytes, helper T cells 8 What does this picture show? (21.0K)
A) compliment proteins aiding phagocytosis B) compliment proteins preventing phagocytosis C) binding of B and T cells D) interferon binding to neighboring cell 9 What is this structure? (8.0K)
A) amino acid B) helper T cell C) vector D) antibody 10 What is one important function of helper T cells in immune response?A) prevents antibody secretion in B cells B) kills invading T cells C) binds with processed antigens on the macrophage D) prevents the release of cytokines 11 Analyze the differences between primary and secondary immune responses in this graph. Based on this data, why is immunization effective in preventing disease? (13.0K)
A) Greater number of antibodies involved in primary response. B) Primary response has faster activation time. C) Secondary response does not last as long. D) Antibodies respond faster in secondary response. 12 A (an) ____ results from an error in a biochemical pathway.A) degenerative disease B) metabolic disease C) cancer D) allergy 13 Which statement is true based on this graph? (13.0K)
A) Antigen X is only exposed once. B) Secondary response is blocked by B cells. C) Secondary response is strongest. D) Primary response is strongest. 14 Which of these statements is true regarding coronary artery disease?A) Genetics is not a possible cause. B) Diet is a possible cause. C) All of the genetic factors have been identified. D) This disease involves a blockage in veins. 15 Why is rheumatoid arthritis an autoimmune disease?A) The immune system cures the arthritis over time. B) No antibodies are produced to protect joints. C) The immune system has learned to tolerate cells in joints. D) Cells in joints are attacked by antibodies.