Biology, 28.09.2019 04:30 markaylarowland8
The diagram shows sodium ions and potassium ions moving against their concentration gradients to cross the plasma membrane. which statement best describes how this movement is possible? question 4 options: the ions move across the semipermeable membrane through simple diffusion. atp provides the energy required to move the ions across the plasma membrane by active transport. water moves across the plasma membrane by osmosis and carries the ions with it.
Answers: 2
Biology, 21.06.2019 17:20
Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation
Answers: 2
Biology, 21.06.2019 22:30
Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.
Answers: 2
Biology, 21.06.2019 23:40
When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page
Answers: 3
The diagram shows sodium ions and potassium ions moving against their concentration gradients to cro...
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