You cut your finger, and after putting pressure on the wound for several minutes, you notice that it is still bleeding profusely. What may be the problem?
A) Platelets are not functioning properly, or there are too few to be effective.
B) Mast cells are not releasing their chemical messengers.
C) There are too many antigens to allow clotting.
D) Hemoglobin levels are too high to allow clotting.
A
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Long, branching fungal filaments are called _____
A) roots B) ascus C) septa D) mycelia E) hyphae
T cells attack
A. transplanted tissue cells from one host to another. B. cancer cells. C. host cells that have been parasitized by microorganisms. D. All of the choices are correct.
Individuals with Turner syndrome have which of the following sex chromosome complements?
A) XO B) XX C) XYY D) XXY E) XXX
The goal of immunization is to ____
a. limit the amount of time a person is ill with a disease b. induce immunity to disease c. enable infected individuals to recover from specific diseases d. expose individuals to a disease e. elicit an allergic response