Phosphate molecules.
Phosphate molecules.
The phospholipid bilayer in cell membranes is both polar and nonpolar. The heads, which face the outside and inside of the cell, are polar. Thus they form hydrogen bonds with the water outside of the cell and the cytoplasm inside the cell. They are called "hydrophilic," which means they love water. The tails are on the inside of the bilayer and are nonpolar. They are hydrophobic, which literally means they are scared of water.
Flour has both polar and non-polar molecules in it. However, most cooking flours have more non-polar molecules, which is why they distribute more evenly in non-polar liquids (like melted butter) than polar (water).
Small polar molecules have a much stronger smell than non-polar molecules. This could be because the smell receptors in our nose are made of polar proteins or it could be because polar molecules are able to dissolve in the mucus membrane of our noses. Whatever the reason, polarity has a large affect on smell.
Skin is a heterogeneous mixture, composed of many different cells, which are composed of many different compounds. Polarity is decided by the configuration of the molecule. Because it is made of many different molecules, it is neither.
Phosphate molecules.
Phosphate molecules.
Phosphate molecules.
Phosphate molecules.
phosphate
Phosphate molecules.
Phospholipids are made up of both water loving, and water repelling materials. They head, which is made of glycerol, is water repelling and therefore forms the outer and inner parts of the cell, away from the water. Where as the tails are made up of fatty acids that are water loving and point in between the heads, and into the water between the two glycerol layers.
phospholipid molecules....they have polar hydrophillic head(like water-as there is phosphate group attached on it..phosphate group has oxygen molecules with all their pairs of unshared electrons.) and hydrophobic tails(scare water)
A phospholipid is a type of fat found in the body. Phospholipids are made up of a polar hydrophilic head and a nonpolar hydrophobic tail. Hydrophilic means water-loving and hydrophobic means water hating.
Phospholipids are made of two parts: the phosphate and the lipid. In this setup, the phosphate is the half that is polar, and thus the part that interacts with water.
The phospholipid bilayer in cell membranes is both polar and nonpolar. The heads, which face the outside and inside of the cell, are polar. Thus they form hydrogen bonds with the water outside of the cell and the cytoplasm inside the cell. They are called "hydrophilic," which means they love water. The tails are on the inside of the bilayer and are nonpolar. They are hydrophobic, which literally means they are scared of water.
Phospholipids are polymers made up of two fatty acids, glycerol, a phosphate group and a polar molecule. A cell's membrane consists phospholipids where they form two layers (with the polar molecules facing opposite ends) to separate the interior of the cell from the outside environment. This is called a phospholipid bilayer.