Some organisms are capable of orchestrating alterations that are collectively termed antigenic variation. This allows the organism to __________.
A) rapidly move through the host's tissues
B) drastically decrease its ID50
C) enter the host's body through more than one portal of entry
D) evade the host's immune system
Ans: D) evade the host's immune system
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With modern molecular techniques, it is now possible to completely assemble a genome from a single cell
Indicate whether the statement is true or false.
__________ are multicelled heterotrophs without cell walls. Fill in the blank(s) with the appropriate word(s)
The coating of microorganisms by serum components, thereby preparing them for recognition and ingestion by phagocytic cells is called
A) Agglutination B) Opsonization C) Differentiation D) Apoptosis
Which component of a muscle does the calcium ion combine with to allow a contraction to occur?
A) myosin head B) T tubule C) actin D) troponin