The cells that surround stomata are
a. endodermal cells.
b. guard cells.
c. mesophyll cells.
d. vascular bundle cells.
e. vessel cells
B
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____ is defined as the percentage of cases in which both members of a pair of twins show the trait when it is known that at least one member shows it
Fill in the blank with the appropriate word.
Immune tolerance of some self antigens need only be maintained in the T cell population because certain B cells can't become activated without the help of T cells.
Answer the following statement true (T) or false (F)
An inflammation of the mucous membranes of the oral cavity caused mostly by herpes simplex virus is:
a. laryngitis. b. pharyngitis. c. Vincent angina. d. stomatitis.
Duchenne muscular dystrophy is, for all practical purposes, a(n) ____________________ trait. Fill in the blank(s) with the appropriate word(s)