Explain why mutualism is sometimes viewed as ‘reciprocal exploitation’. What will be an ideal response?
In a mutualism, both species benefit from their interaction with each other. But, each species is
seeking to gain more benefit or give up less in the interaction. Thus, there is a constant evolutionary
battle between the two of how little can be given and how much taken before the interaction fails.
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The crown of the tooth is covered by _____, the hardest substance in the human body
a. enamel b. calcium c. bone d. dentin
A cotyledon is indicated by
a. A. b. B. c. C. d. D. e. E.
In humans, what is the sequence of fat digestion from the lumen of the small intestine to the bloodstream?
A. lipids ? fatty acid and glycerol (converted in liver) ? bloodstream B. lipids ? fatty acid and glycerol (converted in lacteal) ? bloodstream C. lipids ? fatty acid and glycerol (converted in liver) ? lacteal ? bloodstream D. lipids ? fatty acid and glycerol (converted in epithelial cell) ? bloodstream E. lipids ? fatty acid and glycerol (converted in epithelial cell) ? lacteal ? bloodstream
The normal cell cycle for body cells follows a prescribed timeline based on genetic information contained within the cells. Suppose the cell cycle continues on with mitosis occurring even when it should not. What might happen?
A) A gamete may be produced. B) A tumor might grow. C) An extra limb may form. D) Viruses might replicate.