The immunoglobulin class that has a dimer form found in mucus, saliva, colostrum, and other body secretions is
A. IgD.
B. IgA.
C. IgG.
D. IgM.
E. IgE.
Answer: B
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What cytoskeletal protein is phosphorylated by the M cyclin-CDK complex?
A. microfilaments B. microtubules C. intermediate filaments D. All of the above are correct.
Homologous structures were "discovered" by findings that indicated that ____
a. species on different continents were not similar in form b. different geological layers held different kinds of fossils c. structures of similar form and position occurred in animals of markedly different size, shape, and lifestyle d. some structures found in animals are apparently useless e. some kinds of animals had apparently gone extinct
In the very center of a monocot stem is found pith
____________________ Indicate whether the statement is true or false.
Destruction of the ozone due to pollutants is limited to layers located only above the South American continent
Indicate whether the statement is true or false