Tears protect the eyes by
A. stimulating opsonization.
B. inflammation.
C. flushing and lysozyme.
D. flushing and lysozyme and vasodilation.
E. vasodilation.
Answer: C
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Answer the following statement true (T) or false (F)
Through studies using the animal cap assay this morphogen was shown to be important for the determination of the different types of mesoderm tissue in the developing embryo.
A. activin B. noggin C. Spemann's organizer D. Hox gene E. cadherins
A cell is minimally defined by which of the following:
a. an organized chemical system. b. specialized molecules. c. a nucleus. d. a membrane. e. an organized chemical system and specialized molecules surrounded by a membrane.
Human chorionic gonadotropin signals the placenta to produce large amounts of estrogen and
progesterone. ___________________ Indicate whether the statement is true or false.