The transport receptor, exportin, transports:
A. mRNA to the nucleus when associated with GDP-bound Ran protein.
B. mRNA to the cytoplasm when associated with GTP-bound Ran protein.
C. noncoding RNA to the nucleus when associated with GDP-bound Ran protein.
D. mRNA to the cytoplasm when associated with GDP-bound Ran protein.
B
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Like mitochondria, the inner membranes of chloroplasts are highly convoluted so as to greatly increase surface area
A. true B. false
In a food pyramid that includes larval salamanders and the herbivorous insect and crustacean
prey they consume, the smaller biomass would be found with the __________.
a. salamanders b. insects c. crustaceans d. plants that the herbivores eat
The two long cylinders of spongy tissue lying on top of the penis are called the _____.
A. Bartholin glands B. corpora cavernosa C. corpus spongiosum D. vasa deferentia
Which animals use air sacs to ventilate their lungs?
a. reptiles b. horses c. birds d. frogs