Which of the following produce organic acids that may contribute to weathering of rocks?
A. arctic plants
B. mosses
C. aerial plants
D. water plants
E. lichens
Answer: E
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What happens next after insulin binds to a G-protein coupled receptor (GPCR)?
A. The G-protein loses GDP and gains GTP becoming activated. B. The G-protein loses GTP and gains GDP becoming inactivated. C. The G-protein loses GDP and gains GTP becoming inactivated. D. The insulin enters the cell through the GPCR and diffuses to the nucleus where it interacts with transcription factors. E. The G-protein loses GTP and gains GDP becoming activated.
When all the wavelengths of light are
combined, it becomes
a. white. b. black. c. invisible. d. all the colors of the rainbow. e. thicker.
Which group in the peacock butterfly experiment had the highest survival rates?
a. Those with more nocturnal habits b. Those without spots and without hissing/clicking sounds c. Those without spots but with hissing/clicking sounds d. Those with spots and hissing/clicking sounds e. Those with the same flower habitat as the birds
In summer squash, spherical-shaped fruit has been
shown to be dominant to elongated fruit. On one occasion two different spherical varieties were crossed and produced all disk-shaped fruits. When these hybrid disk-shaped fruits were crossed, they produced 75 disk-shaped fruits, 48 spherical fruits, and 9 elongated fruits. Explain these results. What will be an ideal response?