0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why are membrane proteins are not very soluble in water?
Hydrophobic amino acids on lipid bi-layer
What are proteins embedded in the plasma membrane called?
They are called integral proteins
A plasma membrane is made up of a?
lipid bilayer
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
Why is the Cell membrane considered to be a bi-lipid layer?
because it has lipds molecules on each sides
Why are membrane proteins are not very soluble in water?
Hydrophobic amino acids on lipid bi-layer
What are proteins embedded in the plasma membrane called?
They are called integral proteins
Can non polar molecules cross the lipid bi layer easily?
no
A plasma membrane is made up of a?
lipid bilayer
What molecule is most likely to enter a cell by simple diffusion through the lipid bi-layer?
Try a nonpolar lipid!
What are all Cell membranes formed by?
Lipids [oils {plant origin}are liquid at room temperature while fats {animal origin}are solid at room temperature] are called fatty acids because they have an acid Head and a lipid Tail.In the Cell membrane we find a double layer of sheets of lipids [fatty acids] with the hydrophobic (water avoiding) tails facing the interior of this lipid bi-layer while the hydrophyllic (water loving) acid heads are found facing outward from the two (intra-Cellular and extra-Cellular) 'exterior' surfaces of the lipid bi-layer.
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
What particles can diffuse directly through the lipid bi-layer?
As the bilayer contains hydrophobic fatty acid tails, water-soluble molecules cannot diffuse directly through. However, lipid soluble molecules such as oxygen can diffuse directly through. Overall, for a molecule to be able to diffuse directly through it must be lipid-soluble, relatively small and non-polar.
Does a cell membrane have proteins in it?
a cell membrane is a lipid bi-layer made of phospholipids and water
Why is the Cell membrane considered to be a bi-lipid layer?
because it has lipds molecules on each sides
Is hydrophobic a lipid?
No. Hydrophobic is a concept or symptom, not a substance as lipids are.
What is the definition of 'Lipid Bilayer'?
A lipid bi-layer is a thin membrane of an animal or plant cell that comprises of two layers of lipid molecules. It is also known as the phospholipid bilayer.
