An antigen can be a:
a. toxin
b. protein on a cancer cell membrane
c. protein on a bacterial cell membrane
d. all of the above
d. all of the above
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Lymph is transported through a network of increasingly larger lymphatic passageways. What is the correct order of these, from smallest diameter to largest diameter?
A. Capillaries - ducts - trunks - vessels B. Ducts - capillaries - vessels - trunks C. Vessels - capillaries - trunks - ducts D. Ducts - vessels - capillaries - trunks E. Capillaries - vessels - trunks - ducts
The energy equivalent of O2 is:
a. 4.8 kcal of energy liberated per liter of O2 consumed b. 4.8 kcal of energy liberated per liter of CO2 expired c. 5.8 kcal of energy liberated per liter of O2 consumed d. 5.8 kcal of energy liberated per liter of CO2 expired e. 6.8 kcal of energy liberated per liter of CO2 expired
Characteristics of epithelia include all of the following except
A) secretion. B) avascularity. C) regeneration. D) polarity. E) contraction.
Smooth and cardiac muscles are under involuntary control.
Answer the following statement true (T) or false (F)