Biology, 14.04.2020 20:13, justapointie
In the early 1880s, German scientist Theodor Engelmann combined a photosynthetic filamentous alga with aerobic, oxygen-seeking bacteria in a tube of water. The alga was long and narrow and lined up in the same direction as the long tube, while the bacteria were much smaller and moved freely within the tube. When Engelmann exposed the tube to white light, the bacteria moved about randomly. When he placed a prism between the light and the tube, the bacteria gathered in two distinct regions along the length of the filamentous algae that correspond to different colors of light from the prism. What did Engelmann's experiment demonstrate
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Biology, 21.06.2019 17:10, earcake8692
Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a. cornb. ironc. cottonseedd. vitamin a
Answers: 1
Biology, 22.06.2019 13:00, NotYourStudent
What is the one part of the nucleotide that differs among the other different nucle tides?
Answers: 1
In the early 1880s, German scientist Theodor Engelmann combined a photosynthetic filamentous alga wi...
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