Imagine an artificial cell made with a selectively permeable membrane that allows water to pass through but does not allow sugar to pass
If the artificial cell contains a 1% sugar solution and then you place the cell in a 2% sugar solution, what happens?
A) There is no movement of water.
B) Water leaves the cell because the solution is hypertonic to the cell.
C) Sugar diffuses in and water diffuses out until equilibrium is reached.
D) Water enters the cell because the solution is hypotonic to the cell.
B
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Which of the following describes the difference between fungal endomycorrhizae and fungal endophytes?
A. Endomycorrhizae live inside fungi and provide them with nutrients and water, and endophytes live inside plants, often parasitizing them and slowly breaking down their structure. B. Endomycorrhizae form arbuscules that facilitate exchanges of water and food between the fungus and plant root cells, whereas endophytes invade plant cells and provide the plant with protective antibiotics and toxins. C. Endomycorrhizae are beneficial to its host plant but endophytes harm the host plant. D. Endomycorrhizae form arbuscules on plant roots that produce toxins killing parasitic nematodes, whereas endophytes assist in the transport of water through the plant. E. None of these are correct.
Which feature do bryophytes and flowering plants have in common?
1.flagellated sperm that must swim through water to reach eggs 2.a complex vascular system 3.both asexual and sexual reproduction 4.some cells contain lignin as a strengthener
How does ATP release energy that can be used by living cells?
A) By being exposed to body heat B) By breaking a bond within an ATP molecule C) By being exposed to sunlight D) By adding more phosphate groups to itself
About how many net molecules of ATP are produced at the end of the three stages of aerobic respiration?
A. 38 B. 36 C. 32 D. 16 E. 4