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
Biology, 21.06.2019 17:30
Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.
Answers: 1
Biology, 22.06.2019 15:20
What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time
Answers: 2
Biology, 22.06.2019 22:00
If we assume that, in the african savanna, rainfall and the amount of grass is plentiful, what other factor would best explain a reduced antelope population?
Answers: 1
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