The most abundant class of antibodies in serum is ________.
A. IgG
B. IgE
C. IgD
D. IgA
E. IgM
Answer: A
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Animals that eat both plant and animal material are classified as
A. carnivores. B. herbivores. C. detritivores. D. omnivores. E. insectivores.
We know that from their mother's milk, infants gain proteins called antibodies that protect them from specific germs. We also know that proteins will eventually be broken down by a person's digestive system
How is it that these antibodies can get into the bloodstream of the breast-feeding infant intact? Use only the information from this chapter.
When one cell goes through cell division, it produces ________
A) two identical cells B) two different cells C) four identical cells D) four different cells
Xeroderma pigmentosum (XP) is a rare autosomal recessive disorder. Patients with XP exhibit a cellular hypersensitivity to ultraviolet (UV) radiation, a high incidence of skin cancer, and premature aging. Based on these clinical characteristics, what is the most likely cause for this disease?
A. lack of telomerase activity B. defects in DNA repair C. shortened telomeres D. defects in DNA replication