Which of the following objects would best be used to understand how the human heart works? a.) plastic bag b.) water pump c.) coffee filter d.) block of wood

I'd say B) water pump because the heart pumps blood through your veins just like a water pump pumps water through the faucet? Lol Its B)

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.