Dendritic cells are similar to cytokine-producing cells in that both bridge innate and adaptive immunity in the host.
Answer the following statement true (T) or false (F)
True
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Assuming that all is working properly, which of the following is at a higher energy level?
A. An excited-state reaction center chlorophyll B. An excited-state antenna chlorophyll
Where is calcium stored in muscle fiber cells?
a. T-tubules b. sarcoplasmic reticulum c. muscle fibre cell membrane d. mitochondria e. sarcomeres
Mast cells ____
a. circulate in the bloodstream b. degranulate in response to signaling molecules secreted by endocrine and nerve cells c. respond to normal flora d. release signaling molecules that cause arterioles to constrict e. engulf and digest pathogens
Which of the following answers include all the others?
a. atoms b. molecules c. electrons d. elements e. protons