Online Homework 17-Immunity-BIOL-107
Online Homework 17-Immunity
Question 1
The responses of the immune system to pathogens can be divided into two types: innate immunity and adaptive immunity.
Which of these is activated to fight against one, specific type of pathogen?
Both innate immunity and adaptive immunity are activated to fight against one, specific pathogen.
Innate immunity
Adaptive immunity
Question 2
The first line of defense of the innate immune system is the surface defenses. In the list below, which are examples of surface defenses. (Check ALL the answers that are examples)
phagocytosis
production of antibodies
mucus in the respiratory tract
skin
acid pH of the stomach
white blood cells
Question 3
Harmless microorganisms that are part of our normal microbiota play a role in protecting against infection by pathogens.
Which of the following is true about how these harmless microorganisms block infection by pathogens?
They spend much of their time eating the pathogens by phagocytosis.
They producing antibodies specific for those pathogens.
They live on the skin and mucus membranes where the pathogens would live if they weren’t there.
Question 4
Two of the most important cells of the internal defense branch of the innate immune system are neutrophils and macrophages. They are both phagocytes.
Which of the following list are TRUE about these phagocytes? (Check ALL that apply)
They are destroy pathogens by engulfing them by phagocytosis.
They recognize one, specific molecule that is only present on one pathogen.
They function as antigen presenting cells.
They make antibodies to a specific pathogen.
They recognize molecules that are present on a large number of pathogens, but are not present on cells in the body.
Question 5
True or false: One part of the innate immune defense involve cells in the stomach that secrete hydrochloric acid, which makes the pH of the stomach so acidic that most microbes are killed.
True
False
Question 6
The two parts of the adaptive immune system are humoral immunity and cell-mediated immunity.
Which of the following is true about cell-mediated immunity?(Check all that apply).
It targets pathogens that have infected, and are inside of, cells.
It involves the production of antigens by B cells.
It is primarily used to fight fungi.
It involves T cells destroying infected cells
Question 7
Which of the following is true about antigens? (Check all that apply)
They induce a specific immune response involving the adaptive immunity.
They are a molecules located on the outside of a pathogen or a pathogen-infected cell.
Each antibody can only recognize and bind one specific type of antigen.
They are small, antiviral protein made by immune cells.
They are a type of killer T cell.
Antigens are very similar to molecules found on the outside of cells.
Question 8
True or false: T lymphocytes produce antibodies.
True
False
Antibodies are produced by B lymphocytes.
Online Homework 17-Immunity-Question 9
True or false: Interferon is used to by the immune system to fight bacteria.
True
False
Interferon is used to by the immune system to fight viruses.
Question 10
What type of cells produce antibodies?
regulatory T cells
plasma cells (B cells)
cytotoxic T cells
helper T cells
Question 11
All of the following types of cells are involved in the activation of the immune response except one.
Which of these cells suppress the immune system in order to make sure that the immune system does not respond to “self” molecules present on normal, uninfected cells?
helper T cells
regulatory T cells
cytotoxic T cells
B cells
Question 12
True or false: The second time a person is exposed to a virus, their immune system responds
more quickly and makes more antibodies that the first time it saw the virus, even if it is many years later.
more quickly and makes more antibodies that the first time it saw the virus, even if it is many years later.
True
False
Question 13
Which one of these types of immune cells recognize and destroy cells infected with viruses?
B cells
helper T cells
regulatory T cells
cytotoxic T cells
Question 14
True or false: Antibodies bind to specific antigens using their constant region.
True
False
Question 15
Adaptive immunity can be classified as either active or passive immunity.
Which of the following are examples of passive immunity? (Check ALL that apply)
When antibodies from an indivudal who is immune to rabies is injected into an individual who is has just been infected with rabies.
When an individual developes an immune response after vaccination.
When an individual developes an immune response after being infected with a virus
When a baby gets antibodies by drinking their mother’s milk.
Question 16
Adaptive immunity can also be grouped into natural or artificial immunity.
Which of the following are examples of natural immunity? (Check ALL that apply)
When a baby gets antibodies by drinking their mother’s milk.
When antibodies from an indivudal who is immune to rabies is injected into an individual who is has just been infected with rabies.
When an individual developes an immune response after being infected with a virus
When an individual developes an immune response after vaccination.
Question 17
Which of the following diseases of the immune system occurs when the immune system recognizes a normal antigen present in the body as foreign, and mounts an immune response against it?
immunodeficiency diseases
allergies
autoimmune diseases
Answer Preview-Online Homework 17-Immunity-BIOL-107
$5.00