More than half a century ago, two cell biologists published details of their research involving isolated membrane vesicles from chloroplasts. normally, the fluid inside these vesicles is near neutral. in an experiment, these membrane vesicles were soaked in an acidic solution (ph 4) until the inside of the vesicle also became ph 4. based on the details provided in this scenario, by what mechanism could hydrogen ions have crossed the vesicle membrane, and what do you think happened at the molecular level?
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Biology, 22.06.2019 09:10
Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.
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Biology, 22.06.2019 09:30
Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?
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Biology, 22.06.2019 10:30
Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.
Answers: 2
Biology, 22.06.2019 11:30
Which is the best example of plant tissue? the answer is d (just took the test)
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More than half a century ago, two cell biologists published details of their research involving isol...
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