The collagen fibers in bone are secreted by osteoblasts
____________________ Indicate whether the statement is true or false.
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A process that results in individuals of two populations losing the ability to interbreed is referred to as
(a) stabilizing selection. (b) fusion. (c) speciation. (d) differential migration.
Which city has a continental climate?
a. London b. San Francisco c. Rio De Janeiro d. Minneapolis e. Mumbai
Which of the following is necessary to move substances against an electrochemical gradient?
a. Energy from ATP b. Highly dense solvents c. Isotonic solutions d. Particles from vacuoles
Internal fertilization is more advantageous than external fertilization because it:
a. permits cross-species fertilization. b. is more open to chance. c. produces a motile egg. d. increases the life span of gametes. e. provides a protective environment for gamete fusion.