Which cells in our body possess the MHC II protein?
A. Erythrocytes
B. Neurons
C. Thymus cells
D. Macrophages
E. Nasal epithelial cells
D. Macrophages
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The phenomenon through which populations of organisms change over several generations is termed
A. homeostasis. B. growth and development. C. reproduction. D. biological evolution. E. organization.
Which of the following bonds is weakest?
a. between two oxygen atoms within molecular oxygen b. between the opposite ions, sodium and chloride c. between the oxygen and hydrogens within a water molecule d. between two water molecules e. between the hydrogens within molecular hydrogen
Which of the following cavities has the highest density of cardiac muscle tissue?
A) pleural cavity B) abdominal cavity C) thoracic cavity D) cranial cavity
The anthropoids include
A. monkeys. B. humans. C. apes. D. All of the choices are correct.