A(n) (autotroph/lithotroph/organotroph) uses inorganic molecules as electron donors
What will be an ideal response?
lithotroph
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The element found in most abundance in living organisms is
A. calcium. B. iron. C. iodine. D. hydrogen. E. sodium.
Whether a germ cell develops into eggs or sperm is determined by
a. the presence of the X chromosome. b. the presence of the Y chromosome. c. the time at which meiosis begins during development. d. the genetic sex of the individual. e. whether or not meiosis and mitosis can occur.
What features are typical of plants that are good at performing phytoremediation? a. Grow large b. All of these choices
c. Able to uptake large amounts of contaminants d. None of these choices. e. Grow rapidly
An excess of estrogen like molecules can have which
of the following effects on males? a. lower sperm production b. increase hair growth c. tumor growth on the surface of the testes d. increased reproduction e. all of these