The three primary mechanisms by which molecules move across the cell membrane are :
- Passive transport, the movement of molecules that does not require energy
- Diffusion, when molecule move from higher concentration to lower concentration
- Osmosis, when molecule move to higher concentration
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This complexity of cell processes is attributed to the fact that D. Eukaryotes have specialized membrane bound organelles, in all of their specialized cells, to position or separate biochemical processes to certain environments within the cell.
I believe the answer is B. Heart
d. scientific theory
Explanation:
The statement that all living things like planktons are made up of cells is a true scientific theory.
All living organisms are made up of cells and all cells are derived from pre-existing cells is the first and most fundamental postulate of the cell theory.
- the concept that living things are made up of cell is from the cell theory.
- the cell is the fundamental unit of life.
- the cell theory provides an explanation into cells as the unit of life
learn more:
Cell theory brainly.com/question/3256177
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