Which specialized structure is not correctly paired with its actual function?
a. gullet ? ingestion
b. cilia ? food gathering
c. contractile vacuole ? digestion
d. cilia ? locomotion
e. micronucleus - sexual reproduction
c
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When in the cell cycle would you find sister chromatids?
A. G1 B. S C. G2 D. Answers b and c are correct.
A wheat farmer is concerned that his land has been depleted of nitrogen. What steps can he take to make sure his wheat crops have enough nitrogen for the next season? Select all correct choices
A. He can plant alfalfa on his land and let it serve as "green manure." B. He can treat his land with man-made fertilizers, thanks to Haber and Bosch. C. He can continue to plant his wheat crops, as wheat can form root nodules. D. He can treat his land with phosphate fertilizers.
Which organelle primarily functions in packaging cellular secretions for export from the cell?
a. Golgi body b. mitochondria c. lysosome d. ribosome e. endoplasmic reticulum
If the apple and haw flies become distinct enough to be separate species, their evolution is an example of:
A) behavioral isolation. B) allopatric speciation. C) sympatric speciation. D) gametic isolation.