The most abundant antibody class in the body, found in all body fluids, is
A) IgA. B) IgD. C) IgE. D) IgG. E) IgM.
Answer: D
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What process is used to clone animals like the famous sheep "Dolly"?
A) gene therapy B) using a gene gun C) stem cell research D) nuclear transfer
In what way are prokaryotic and eukaryotic cells different?
a. A prokaryotic cell does not have cytoplasm, but a eukaryotic cell does. b. A prokaryotic cell does not have a nucleus, but a eukaryotic cell does. c. A prokaryotic cell does not have genetic material, but a eukaryotic cell does. d. A prokaryotic cell does not have a flagellum, but a eukaryotic cell does.
The medication known as mifepristone, or RU-486, acts by
A. preventing an egg from maturing and being released-essentially a stronger regular birth control pill. B. killing sperm as they enter the female reproductive tract. C. destroying the embryo which in turn causes a spontaneous miscarriage. D. blocking the progesterone receptors of cells in the uterine lining and causes the loss of an implanted embryo. E. preventing development of a uterine lining.
Facelifts are a type of cosmetic surgery that are meant to tighten the skin to give the face a smoother, more youthful appearance. In addition to the skin, what else would you predict is also involved in this type of surgery?
A) loose connective tissue B) smooth muscle C) bone D) simple cuboidal epithelium