Answer:
1) Diffusion is net movement of anything (e.g., atom, ions, molecules) from a region of higher concentration to a region of lower concentration.
2)
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides
3) One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but in osmosis, only the solvent molecules (water molecules) cross the membrane.
4) Molecules tend to move from areas of higher concentration to areas of lower concentration.
I'm sorry, but I don't know how to do part #2. I think it's a lab.
Cancer cells are less likely than normal cells to undergo _apoptosis______, or programmed cell death.
Apoptosis is synonymous to programmed cell death
Explanation:
Programed cells death of the cell is required to maintain proper tissue homeostasis. Examples of when apoptosis is necessary are when a cell may have errors in its DNA replication process. Apoptosis ensures the cell does not continue dividing and generating cells with the error. Other forms of damage to a cell that is hard to repair also require that the cell undergo apoptosis.
In cancer cells, apoptosis pathway faulted and even when cells are required to undergo programmed cell death, such as in the case when lethal mutations occur, the cell continues to divide creating many cells that have the defect. This is what creates cancer tumors,
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Answer:
nuclei, mitochondria and chloroplasts
