Fertilization of an ovum occurs in the
A. uterus.
B. ovary.
C. oviduct.
D. vagina.
E. ovarian follicle.
C. oviduct.
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Radially symmetrical animals have a nerve __________. Fill in the blank(s) with the appropriate word(s)
The lateral line system in elasmobranchs is used to detect which of the following?
1.Electric currents 2.Odors 3.Sounds 4.Vibrations
Which of the following areas of investigation is considered a major driver of modern microbiology?
A) microbial classification B) industrial microbiology C) the etiology of infectious disease D) genetics E) food preparation
Lymphocytes
A. possess MHC antigens for recognizing self. B. gain tolerance to self by destruction of lymphocytes that could react against self. C. have membrane receptors that recognize foreign antigens. D. develop into clones of B and T-cells with extreme variations of specificity. E. All of these choices are correct.