10 points to the person who RESEARCHES and gives the correct answer.?1 . Which of the following describes innate immunity? (Concept 43.1E-Book) [Hint]
Unbroken skin creates a physical barrier that cannot normally be penetrated by bacteria or viruses.
Surface secretions from sebaceous and sweat glands give the skin an acidic pH that is unfavorable for bacterial colonization.
Tears, saliva, and mucous secretions contain lysozyme, an enzyme that digests bacterial cell walls.
Mucus traps microbes and other particles that come in contact with it.
All of the above.
2 . Which statement best describes tissue macrophages? (Concept 43.1E-Book) [Hint]
They are antigen-presenting cells that originate from neutrophils.
They have short life spans because they self-destruct after engulfing foreign invaders.
They are phagocytic cells that originate from monocytes, which leave the circulation and enter the tissues.
They are most effective against parasites.
They do not phagocytize microorganisms; instead, they induce lysis of virus-infected body cells.
3 . Which choice best describes an antigen? (Concept 43.2E-Book) [Hint]
An antigen is a protein molecule that helps defend the body against disease.
An antigen induces development of white blood cells in the bone marrow.
An antigen could be an invading virus or bacterium.
An antigen is a foreign molecule that evokes a specific response by a lymphocyte.
An antigen is a protein attacked by an invading microorganism.
4 . How do memory cells differ from effector cells? (Concept 43.2E-Book) [Hint]
Memory cells are more numerous.
Memory cells are responsible for the primary immune response.
Memory cells combat antigens; effector cells do not.
Memory cells live longer.
Memory cells are capable of producing antibodies.
5 . The role of cytotoxic T cells is to attack _____. (Concept 43.2E-Book) [Hint]
body cells that have been infected
circulating antibodies
circulating proteins
extracellular viruses and bacteria
complement proteins
6 . Cell-mediated immunity differs from humoral immunity because_____. (Concept 43.3E-Book) [Hint]
cell-mediated immunity is longer lasting
a subsequent secondary immune response can occur in humoral immunity
clonal selection occurs in cell-mediated immunity
they respond differently to invaders
a humoral response is mounted more quickly
7 . Helper T cells are part of _____. (Concept 43.3E-Book) [Hint]
a cell-mediated immune response
innate immunity
the complement system
a group of phagocytic white blood cells
all of the above
8 . Viruses and bacteria in body fluids are attacked by _____. (Concept 43.3E-Book) [Hint]
antibodies from B cells
cytotoxic T cells
complement proteins
helper T cells
antigens
9 . Tissues are typed before an organ transplant to make sure that the _____ of donor and recipient match as closely as possible. (Concept 43.4E-Book) [Hint]
T cells
antibodies
MHC (major histocompatibility complex) proteins
histamines
B cells
10 . Which of the following cell types does HIV preferentially infect? (Concept 43.5E-Book) [Hint]
cytotoxic T cells
natural killer cells
helper T cells
plasma cells
memory cells
btw these are multiple choice if you haven't guessed yet.
i'd love to research it and learn, but i haven't the time.
Answer by Its not love, but its not bad
priceless learning if you researched it yourself
EpiSep Demonstration of Circulating Tumor Cell Isolation
Video Rating: 5 / 5 Information about multiple myeloma and other plasma cell neoplasms.
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