In which situation would water enter a cell through osmosis? A. The cell is 20% water, and the cell's environment is 80% water,
B. The cell is 50% water, and the cell's environment is 50% water,
C. The cell is 60% water, and the cell's environment is 40% water.
D. The cell is 80% water, and the cell's environment is 20% water.

A

Explanation:

Water enters osmosis when the cell's water is lower than its environment's water. This is known as Hypertonic. B is an equalibrium so nothing special happens there, and C and D are examples of potential bursting of the cell from too much water, known as Hypotonic, so in process of elemination, A would be the answer. Another way of telling that C and D aren't the answer is that if they were really true, both of them would be correct, and there can't be two correct answers.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

gag reflex, poor dentition, gum retraction

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