In the female, the __________ serves as a temporary endocrine gland and secretes __________
a. pituitary; luteinizing hormone and follicle-stimulating hormone
b. ovaries; testosterone and luteinizing hormone
c. endometrium; estrogens and follicle-stimulating hormone
d. corpus luteum; progesterone and estrogens
e. uterus; luteinizing hormone and follicle-stimulating hormone
D
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Ribozymes are ________
a. laboratory-formed selectively permeable vesicles b. catalytic RNAs c. fossils of an early eukaryote d. dome-shaped layered structures formed by marine bacteria
Cervical cancer is caused by infection with ________
a. Epstein-Barr virus b. human papillomavirus c. Trichomonas vaginalis d. vaginal yeast
A mutualism in which each species can live without the other is termed
A. an obligate mutualism. B. a facultative mutualism. C. a dispersive mutualism. D. a trophic mutualism. E. a defensive mutualism.
A population's gene frequency should NOT change if ______________.
a. the population is large b. there is random mating c. there is no natural selection d. all of these