Which is a component of a phospholipid? carbon ring hydrophilic head long-chain alcohol amino acid

Ans.

Phospholipids can be defined as lipid derivatives, having two hydrophobic tails of fatty acids and a hydrophilic or polar head of phosphate group. As they have both polar and non-polar groups, they are amphiphilic in nature

Phospholipids form lipid bilayers, in which polar head groups point outward and non-polar or hydrophobic tails are present at the interior of bilayer.

Thus, the correct answer is option). 'hydrophilic head.'

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.