The evolutionary process by which species become adapted to use a shared limiting resource in a way that minimizes competition is known as:
a. competition
b. social parasitism
c. predation.
d. mimicry
e. resource partitioning
e
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The process in which genes move from one chromosome to another is called ____________________
Fill in the blank(s) with correct word
Which of the following is NOT one of the four major
intervals in the geologic time scale? a. Mesozoic b. Proterozoic c. Carboniferous d. Cenozoic e. Paleozoic
A tumor is actively producing both VEGF and FGF, factors that stimulate angiogenesis, but no new network of blood vessels to the tumor has been established in spite of the fact that blood vessels are nearby. This observation suggests that most likely
A) the cancer cell versions of the VEGF and FGF are not functional. B) only VEGF or EGF is active but not both. C) p53 is overexpressed. D) angiostatin is present in greater concentration. E) the tumor has been established by metastasis of a cell from a distant tumor.
Large or polar hormones cannot enter a cell directly. What molecule can act as a second messenger for such hormones?
A. Cyclic AMP B. Epinephrine C. Calcitonin D. Catecholamine E. Norepinephrine