The hypothalamic hormone that triggers the secretion of follicle-stimulating hormone (FSH) is _____
A) luteinizing hormone (LH)
B) estradiol
C) progesterone
D) human chorionic gonadotropin (hCG)
E) gonadotropin-releasing hormone (GnRH)
Answer: E
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In most ecosystems, the primary producers use energy from _____ to build organic compounds
a. inorganic chemicals c. heat b. sunlight d. lower trophic levels
When the oocyte is released from the ovary, it is transported to the uterus through the
A) fimbriae. B) flagella. C) oviduct. D) ductus deferens. E) endometrium.
Vertebrae are differentiated during embryonic development by the
A) amount of spongy bone present. B) length of the backbone. C) degree of structural support needed. D) pattern of homeotic gene expression.
________ is the presence of small numbers of bacteria in the blood.
Fill in the blank(s) with the appropriate word(s).