What type of aggression is displayed when an animal protects its owner?
a. dominance aggression c. fear aggression
b. territorial aggression d. redirected aggression
B
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Which valves have chordae tendineae?
A) coronary valves B) aortic and pulmonary valves C) semilunar valves D) valves in veins E) bicuspid (mitral) and tricuspid valves
The gluteus maximus, medius, and minimus muscles all have the same action (extension of the thigh at the hip).
Answer the following statement true (T) or false (F)
Which cells aid in the body's defense processes by secreting histamine and heparin?
A. Basophils B. Eosinophils C. Platelets D. Neutrophils E. Monocytes
Which of the following statements regarding the structure and function of cell membranes is correct?
A. Peripheral membrane proteins function as channels associated with transport of ions through the membrane. B. The phospholipid bilayer is arranged so that the hydrophilic heads of the phospholipid molecule face the extra- and intracellular fluids. C. The plasma membrane is a layer of phospholipid molecules with their hyrophilic head groups in contact with the extracellular solution and the hydrophobic tail groups in contact with the intracellular solution. D. Some proteins integrated into the membrane serve as channels for the passage of nonpolar molecules through the membrane. E. Cholesterol molecules function to transport ions from one side of the plasma membrane to the other.