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Which substances do you think will diffuse across the lipid bilayer most quickly?
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What characteristics is more likely to make a substance diffuse through the cell membrane?
Size. Actually very few substances are able to diffuse across the menbrane, most must be transported ie facilitated diffusion, active transport, or receptor-mediated endocytosis. Carbon dioxide, oxygen, water, and some lipid substances are able to diffuse across the membrane
What does blood reabsorb from the nephrons?
Glucose and some ions and water are the main substances that diffuse (or are actively transported) across the nephron, into the blood.
What can diffuse directly across the plasma membrane of a eukaryote cell?
Most small non polar molecules can diffuse across the membrane. Water is polar but diffuses across the cell through aquaporins. There are also proteins that actively transport substances across the cell membrane such as ions (ex.The Na/K pump). It can get a little confusing. I tried to be as simple as possible. I don't know if this is what you were looking for.
What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
Gases diffuse most efficiently across what?
Diffusion of gases easily occurs across a membrane. The gases will have to be converted into liquids so as to diffuse easily.
What type of molecule would be likely to diffuse across the phospholipid bilayer of the cell membrane?
an ion
Which substances readily diffuse through the membrane?
Small and non-polar molecules can readily pass through the cell membrane. They follow the concentration gradient, moving from the higher concentration area to the region of lower concentration.
Can oxygen diffuse across a cell membrane?
Yes, how else would our cells obtain oxygen?
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.
What is diffusion assisted by special protein molecules which bind to substances that diffuse across membranes?
facilitated diffusion
What is the purpose of the proteins in the bilayer?
They can be used to carry things across the membrane. for example, glucose is too large to diffuse through, so a protein must be used to carry it.
What characteristics is more likely to make a substance diffuse through the cell membrane?
Size. Actually very few substances are able to diffuse across the menbrane, most must be transported ie facilitated diffusion, active transport, or receptor-mediated endocytosis. Carbon dioxide, oxygen, water, and some lipid substances are able to diffuse across the membrane
What does blood reabsorb from the nephrons?
Glucose and some ions and water are the main substances that diffuse (or are actively transported) across the nephron, into the blood.
Is glucose permeable through phospholipid bilayer?
Glucose does not readily diffuse across a lipid bilayer. In order for glucose to travel into the cell, it needs the help of a transport protein. This is called a facilitated diffusion.
How plasma membrane diffuse across plasma membrane?
Ions can't diffuse across membranes, they must used channels to transport across
Why cant glucose be able to move across a cell membrane by simple diffusion?
the lipid bilayer forms a barrier to water soluble substances such as glucose
How do you use diffuse in sentence?
Oxygen molecules diffuse across the membrane.
