Which antibody has the shape of a pentamer, or five-sided arrangement?
A) IgM B) IgA C) IgG D) IgD
Answer: A
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After microRNAs are transcribed, processed, and folded into stem-and-loop hairpin structures, specialized enzymes cleave the miRNAs to double-stranded fragments that are typically around 20-25 nucleotides long
A. true B. false
Which two components of the endomembrane system share continuous membranes?
a. plasma membrane and Golgi apparatus b. endoplasmic reticulum and lysosomes c. nuclear membrane and endoplasmic reticulum d. Golgi apparatus and plasma membrane
Coxiella burnetii is responsible for ________.
A. Typhoid fever B. Lyme disease C. Rocky Mountain spotted fever D. Q-fever
The immunoglobulin class that has an Fc region that binds to receptors on basophils and mast cells is
A. IgD. B. IgM. C. IgA. D. IgG E. IgE.