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This process is called osmosis.

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Q: The process by which H2O diffuses across a membrane?
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What are 2 substances that diffuse freely across a cell membrane?

CO2, H2O, and O2 can all diffuse across a cell membrane. Also, small polar molecules (uncharged) and hydrocarbons easily diffuse across.


Name 3 particles that are small enough to diffuse freely across the cell membrane?

H2O CO2 O2 hope this helps


What is the effect of osmosis on cell?

Osmosis is the process whereby water or H2o is transmitted throughout the cell membrane and thus hydrated. The cell absorbs fluids via the process termed osmosis.


What process is described by the equation H2O liquid gives H2O solid plus heat?

H2O(l) --> H2O(g) + heatshows the process of freezing.


Why do animals breathe in oxygen and breathe out carbon dioxide?

The Oxygen diffuses into cells, where it is used in the mitochondria in a process called cellular respiration. This process converts C6H12O6 (sugar) and oxygen into H2O , CO2 and ATP. ATP (or adenosine tri-phosphate) is the energy that fuels our bodies. This process is why we breathe out CO2


What describes the equation H2O(I) H2O(s)?

This physical process is freezing.


What substance will diffuse through a membrane?

The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.


What molecule could move through a phospholipid membrane with the least difficulty?

h2o


Why does water require channels to be transported across the membranes?

Water doesn't require channels to be transported across membranes because water is small enough to slip past the membrane; however, some cells do have channels, called aquaporins, which greatly increase the rate that water passes through the membrane.


What is a dry process?

One in which no water (H2O) is produced.


What is haidrolysis in chemical process?

reaction of any compound with H2O


What molecules can freely cross the plasma membrane?

Proteins, Carbohydrates, and Cholesterol. (Check out, 'fluid mosaic')