To be considered _____, an introduced species must begin breeding in its new location and spread widely from its point of introduction.
A. resourceful
B. harmful
C. native
D. dominant
E. invasive
E. invasive
Biology & Microbiology
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Which of the following can be used as vectors for cloning DNA fragments?
A. bacteriophages B. plasmids C. cosmids D. All of the choices are correct.
Biology & Microbiology
Which part of the leaf stores toxic or unpalatable compounds in order to deter grazing herbivores?
a. cuticle b. stomata c. trichomes d. mesophyll
Biology & Microbiology
How does angiotensin increase blood pressure?
a. It induces vasodilation. b. It causes stress which results in high blood pressure. c. It induces vasoconstriction. d. It triggers the kidneys to increase blood volume.
Biology & Microbiology
Which of the following is NOT a source for stem cells?
a) sperm and eggs b) early embryos c) certain adult tissues d) umbilical cord blood
Biology & Microbiology