QUESTION 1o Which of the following is one of the body's first lines of defense against infection? A) antibodies B) obstacles such as skin and mucous membranes C) increased production of certain hormones D) decreased heart rate

Question 6 Represents innate immune system receptors A Randomly arranged B) Germline encoded c) cross-reactive D) CLP encoded E is determined by specific carbohydrate groups

Which of the following are important for viral protection? ( select all the correct answers)    a) Macrophages b) Interferons c) Skin d) Natural Killer lymphocytes

The lab performs a complete blood count with cell differential while the patient is still in the office.The results show an elevated white blood cell count,as well as a high neutrophil count.What does this indicate?   A)Bacterial infection B)Viral infection C)Protozoan infection D)Helminth infection

(Please answer all parts, thank you!) 1) Mature red blood cells contain hemoglobin for transporting oxygen but contain little else. They lack a nucleus and most organelles. Are red blood cells more or less likely to be infected by a virus? a) More likely  b) Less likely    2) How does SARS-COV-2 genetic material get replicated? a) Host cell DNA polymerase b) Host cell RNA polymerase c) RNA polymerase encoded for by viral genome and built in the host cell  d) RNA polymerase encoded for by viral genome and originated from the virus    3) How does SARS-COV-2 proteins get built? a) The host cell's ribosome b) Ribosome encoded for by viral genome and built in host cell

Use the following choices for the next set of questions. A choice may be used zero or more times: a)Complement b) B cells c) T cells d) more than one of these 6)Part of the innate immune response 7)Often found concentrated in the lymph nodes 8)Expresses MHC Class I 9)Can be a plasma cell 10) Capable of inducing cytotoxicity of self cells 11) Directly participates in ADCC 12) Forms membrane attack complex 13) Undergoes affinity maturation 14) Produces molecules capable of neutralizing soluble toxins in serum 15) Undergoes somatic hypermutation 16) Produces molecules which serve as opsonins 17) Relies on immunologic signal transduction for proper operation 18) Undergoes clonal expansion 19) Considered part of the endothelium 20) Capable of producing granzyme

___________ are employed to kill the infectious germs and cure a disease.a) Antigens b) Antibiotics c) Vaccines d) Vitamins

Question 10,11,12

Which of the following is the best definition of antigen?   Question 8 options:   A)  something foreign in the body   B)  a substance that elicits an immune response   C)  a chemical that combines with antibodies   D)  a pathogen

The following are some well-known abbreviations, which have been used in this chapter. Expand each one to its full form:(a) MALT (b) CMI (c) AIDS (d) NACO (e) HIV