Which is a part of the body's nonspecific defense mechanism?
A) skin
B) T cells
C) B cells
D) antibodies
A
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Examine Figure 41.1c. Which of the following best describes conditions at equilibrium?
A. No water molecules are moving across the barrier between the two compartments. B. A net movement of water molecules continues to add water to the right-hand compartment. C. A net movement of water molecules begins to add water to the left-hand compartment. D. Water molecules move randomly across the barrier with no net addition of water to either side. E. None of these choices accurately describe conditions at equilibrium.
Which of the following is (are) a subphylum(a) of
Chordata? a. Urochordata b. Hemichordata c. Cephalochordata d. Vertebrata e. Urochordata, Cephalochordata, and Vertebrata
2-amino purine is an alkylating agent
Indicate whether the statement is true or false
Your body contains thousands of different types of proteins, each with a specific function. A protein's function is largely determined by its _
A. style B. attribute C. property D. shape