Whether an organism is an autotroph or heterotroph depends on its source of nitrogen.
Answer the following statement true (T) or false (F)
False
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Cycads and ginkgos differ from all other seed plants by:
A. having flagellated sperm within the pollen B. lacking cambium C. having the sexes separated on different trees D. being pollinated by wind instead of insects E. All of the ways mentioned in the other choices are correct.
All gymnosperms have needle-like leaves and produce some type of resin.
Answer the following statement true (T) or false (F)
In ________ reactions, the products contain more energy than the reactants.
Fill in the blank(s) with the appropriate word(s).
The bacterium Vibrio cholerae releases a toxin that blocks a channel protein in the membranes of cells that line the intestine. This toxin prevents the movement of sodium ions from the inside of the intestine into cells
If the sodium ions could not move into the cells, how would this affect the movement of water between the inside of the intestine and the cells? A) Water would leave the cells and enter the intestines by facilitated diffusion. B) Water would leave the intestines and enter the cells by osmosis. C) Water would leave the cells and enter the intestines by osmosis. D) The movement of water would not be affected. E) Water would leave the intestines and enter the cells by facilitated diffusion.