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denis23 [38]
3 years ago
9

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?
Biology
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

Plasma membrane is the semi-permeable membrane that allow the movement of some selected particles only against the concentration gradient or along the concentration gradient.

Different substances can be move through the diffusion, active process and passive process. The hydrogen in the vesicle has been moved through the facilitated diffusion.  In this process, the hydrogen ions will move along the concentration gradient without the requirement of energy but requires the channel protein for its transport.

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Explanation:

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It's always associated with motion

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6 0
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Which model of the universe did the ancient Greeks believe to be correct. This is for the subject of earth science
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The Greeks believed in the geocentric model of the universe.

According to this model, the Earth was present in the center whereas the Sun, moon, other planets etc revolved around it. According to Plato, the Earth was spherical in shape and it did not move. Greek philosophers, such as Aristotle and Plato, believed the Earth to be the center of the universe. All other heavenly bodies orbited around the Earth according to the Greek philosophers.

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8 0
3 years ago
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