After infection occurs, the second line of defense for a host against a parasite, which is elicited when a foreign object, such as a virus or bacterium, enters the bloodstream, is referred to as a(n) ________ response
Fill in the blank(s) with correct word
immune
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most major enzymatic digestion of food materials takes place where in the digestive system?
What will be an ideal response?
Action potentials stimulate the sarcoplasmic reticulum to release chloride ions into the muscle cell
Indicate whether the statement is true or false
The adaptive immune system is capable of mounting specific responses to particular microorganisms because
A) lymphocytes are able to change their antigen specificity as required to fight infection. B) stem cells determine which type of B and T cells to make. C) the body contains an enormous diversity of lymphocytes, each with the ability to respond to a different antigen. D) stem cells make different antigen receptors depending on the invading microorganism.