Which of the following BEST describes why it is challenging for surface immunoglobulin to transduce a signal into the cell upon antigen binding?
A. It takes twice as much antigen to stimulate the cells because each antibody has two antigen binding sites.
B. The cytoplasmic domain of surface Ig only has three amino acids.
C. Ig? is rapidly dephosphorylated.
D. Ig is an inflexible molecule.
E. All of the above.
B
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The middle ear:
A) contains the ossicles. B) has no openings. C) is lined with fine hairs. D) all of the above.
Root meaning the same as lingu/o:
A) cheil/o B) gloss/o C) ungu/o D) lapar/o
What is the minimal duration of minutes of vigorous exercise (per workout) that is sufficient for achieving cardiorespiratory fitness changes for most people?
A. 10 B. 20 C. 30 D. 60 E. 90
Alcohol is high in nutritional value and low in calories.
Answer the following statement true (T) or false (F)