Interpathway interaction is called cross talk
1.True
2.False
2
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Which of the following is not a component of the demography of a population?
1.size and density 2.distribution pattern 3.age structure 4.all are demographic characteristics
What are some of the hazards of smoking? What methods might society employ to try to reduce the number of people exposed to secondhand smoke?
What will be an ideal response?
The process of exon shuffling for the origin of new genes is supported by the evidence that
a. exons evolve more slowly than introns do. b. unicellular eukaryotic genes have fewer exons than multicellular eukaryotic genes. c. different genes have related exons. d. very few prokaryotic genes have introns. e. duplicated genes often have exons in a different sequence than the original copy of the gene.
In contrast to a primary immune response, immunological memory
A) generates higher antibody titers. B) provides a rapid reactivation of both cellular and humoral responses including generating higher antibody titers and antibodies with increased affinity for its antigen. C) provides a rapid reactivation of humoral responses only by generating higher antibody titers and antibodies with increased affinity for its antigen. D) provides a rapid reactivation of both cellular and humoral responses. E) generates antibodies with enhanced affinity for its antigen.