The process by which the surface of a microorganism is covered with antibodies and complement, rendering it more likely to be phagocytized, is called
A) opsonization.
B) activation.
C) agglutination.
D) precipitation.
E) neutralization.
A
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A circular muscle band that contracts at an orifice is also known as a _______________
Fill in the blank with correct word.
Jawless fish lack immunoglobulins and use __________________ to recognize non-self macromolecules
A) Variable antigen receptors B) Variable lymphocyte receptors C) C region receptors D) Recombination signal receptors Fill in the blank with the correct answer.
Describe an action potential and explain why a region of the membrane that is in the absolute refractory period cannot experience another action potential until repolarization is complete. Include the following in your answer : voltage-gated Na+ channels, voltage-gated K+ channels, activation gate, inactivation gate, threshold voltage, increasing membrane potential, and decreasing membrane
potential. What will be an ideal response?
Folds of mucous membrane called ________ vibrate to provide speech.
Fill in the blank with the correct word.