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There are two primary types of lymphocytes.The ________ T cells are involved with slowing down and halting the immune response when the threat has been handled.

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Single-celled organisms that can be found in almost all environments


A) Antibodies
B) Bacteria
C) Phagocytes
D) Lymphocytes
E) Antigen

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After B and T cells have been exposed to an antigen, they produce ________ so that if they encounter the same antigen again, they will be able to respond more quickly.

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Transmitted to approximately 10 percent of all blood transfusion recipients prior to 1990


A) Hepatitis C
B) Pneumonia
C) Malaria
D) Tuberculosis

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Sexual transmission of hepatitis C is relatively common.

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The term ________ was coined as a shortened form of proteinaceous infectious particles-infectious agents believed to be made entirely of proteins.

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________ is the most common cause of skin infections.(Provide the full name for this answer.)

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Staphyloco...

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There have been two reported cases in the United States where the HIV virus was transmitted via casual contact, such as sharing bathrooms and kitchens, or hugging.

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Which type of white blood cell is responsible for the antibody production in the acquired immunity response?


A) phagocytes
B) mast cells
C) lysozymes
D) B cells

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Diseases that occur when the immune system begins to recognize components of the body as foreign and starts a self-destructive process are called ________ diseases.

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The term used to describe the speed and intensity with which a pathogen is likely to cause and infection is


A) immunity.
B) virulence.
C) vector.
D) susceptibility.

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The main factors believed to influence bacterial resistance are


A) poor hand washing, and frequency of resistance genes among bacteria.
B) the rate of bacteria growth, and poor hand washing practices.
C) overuse of antibiotics and human evolutionary changes.
D) the frequency of resistance genes among bacteria, and antibiotic overuse.

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In the chain of infection, the ________ is the animal or insect that transmits a pathogen to a new host.

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Allergic reactions occur when the same process that helps protect against infection is directed toward a noninfectious agent.

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Cases of Staphylococcus aureus (MRSA) have been associated with receiving tattoos.

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The set of protective measures called ________ precautions are taken by health care workers with blood and certain body fluids of every patient in order to prevent transmission of bloodborne infections.

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The most common sexually transmitted disease in the United States is


A) hepatitis C.
B) chlamydia.
C) the human papillomavirus (HPV) .
D) the human immunodeficiency virus (HIV) .
E) gonorrhea.

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Leading cause of infectious disease and death in children worldwide


A) Hepatitis C
B) Pneumonia
C) Malaria
D) Tuberculosis

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The risk of contracting sexually transmitted diseases increases proportionally with your number of sexual partners.

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Megan suffers from candidiasis, a vaginal yeast infection.Which type of microorganism has infected Megan?


A) fungus
B) protozoa
C) virus
D) bacteria

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