Secondary messengers are molecules that bind with signal receptors on the plasma membrane of a target cell
1.True
2.False
2
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Lichens are a mutualistic association of a fungus and either an alga or a cyanobacterium in which
A) the fungus protects the photosynthetic partner from erosion. B) the fungus slowly engulfs the photosynthetic partner. C) the fungus helps collect sunlight for the photosynthetic partner. D) the phototroph provides phosphorus to the fungus.
Which of the following is important in microscopy?
a. magnification b. lens length c. base height d. number of adjustment knobs
Biological species consist of groups of ______.
a. families b. genera c. domains d. populations
Give the sex of the following people assuming that the autosomes are present in the normal number. XO; XY; XXY. Answers are in order (respectively)
A) male; male; female B) male; female; female C) female; male; female D) female; male; male E) male; male; male