During a Type I hypersensitivity reaction, the mast cells
A. become phagocytic.
B. release IgE antibodies.
C. degranulate.
D. immediately release histamine.
E. degranulate AND immediately release histamine.
E
You might also like to view...
What is the difference between the blood types, A, B, and O?
A. A and B individuals have carbohydrate trees on the surface of red blood cells. O individuals do not have carbohydrate trees. B. For each blood type, A, B, and O, there is a different sugar attachment enzyme produced. C. A and B individuals have different modifications made to their carbohydrate tree. O individuals have no modifications made to their carbohydrate tree. D. The glycosyl transferase gene has a different mutation in A individuals than in B individuals. O individuals have no mutations in the glycosyl transferase gene. E. Two of these answers are correct. The glycosyl transferase gene mutations in A and B individuals prevent the removal of carbohydrate trees from the cell surface. O individuals have no mutations and therefore have no carbohydrate trees on the red blood cell surface.
In the internal leaf structure shown above, the item labeled "3" is
a. a vascular bundle. b. spongy mesophyll. c. epidermis. d. a stoma. e. palisade mesophyll.
The jumping of a nerve impulse from one node of Ranvier to the next is known as ________
Fill in the blank(s) with correct word
Which of the following bacterial cell structures plays an important role in the creation of biofilms?
A. glycocalyces B. flagella C. fimbriae D. pili E. both fimbriae and glycocalyces