What type of cell does Ehrlichia chaffeensis infect in humans?
A. capillary endothelial cells
B. B lymphocytes
C. neutrophils
D. monocytes
E. eosinophils
Answer: D
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The primary function of focal contacts is
A) cell–ECM adhesion. B) cell–cell adhesion. C) cell–cell communication. D) paracellular pathway regulation. E) establishing cell polarity.
Chemical bond is formed by sharing of electrons:
a. covalent bond b. peptide bond c. atom
Why are severe burn patients at extreme risk of infection?
A) These patients have to stay in a hospital environment for a long time while being exposed to sick people. B) The skin is the first and primary barrier to preventing ingress of foreign substances. C) Most immune system cells are destroyed when the skin is damaged. D) The skin helps with the production of vitamin E, a necessary disease-fighting vitamin.
Disinfectants that damage membranes include
A) alcohol. B) phenolics. C) iodine. D) hydrogen peroxide. E) both alcohol and phenolics.