Biology, 07.11.2019 01:31 desereemariahha
Some students used vinegar to dissolve away the shells of three eggs and used these eggs as models of human red blood cells. the students observed the changes in the eggs when they were placed in different solutions.
which statement best describes the role of the cell membrane in this model?
answer choices
a) the cell membrane is an impermeable barrier that prevents water from entering the cell.
b) the cell membrane allows solutes to enter the cell, which causes the cell to shrink.
c) the cell membrane allows water to enter and leave the cell.
d) the cell membrane removes solutes from the environment.
Answers: 3
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Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d
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Biology, 22.06.2019 08:00
What is usually (but not always) related to the metabolic processes of living organisms in its organic form?
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Some students used vinegar to dissolve away the shells of three eggs and used these eggs as models o...
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