About Phospholipid:
Cells are surrounded by a very important type of lipid called phospholipid. Phospholipid consists of hydrophilic (water loving) head and hydrophobic ( water fearing) tail. Phospholipid like to line up and arrange themselves into two parallel layers called phospholipid bilayer.
Importance of phospholipid:
Forms bilayer which provides barrier around the cell and only let in certain molecules like carbondioxide and oxygen necessary for cellular respiration.
During digestive process phospholipid form clusters to help move vitamins, nutrients and fat containing molecules through the body.
They can be used as signal transducer between cells.
They split to form product called second messenger, that can signal for leukocyte to migrate to the site of infection.
Phospholipid that is both structural and functional is sphingomyelin, forms the insulation that protect your nerves and facilitates the conduction of nerve impulses.
Phospholipid in stomach helps in breaking down the fat.
Phospholipid in bile help emulsify fats so they can be carried in blood.
Answer:
The correct answer is - add a few bases for DNA polymerase
Explanation:
A short extended nucleic acid composed of ssRNA molecule. This is a molecule that synthesize a primer initialy and later again lay down a primer after the opening of replication fork by DNA helicase.
It sysntheisze before and after the helicase and follow the helicase in order to prepare for the replication process. Thus, adding a few bases for DNA polymerase is main job of RNA primase.
The basic reason why unripe fruits have defensive chemicals is that they need to protect the seeds that are not ready to germinate. On the other hand, the seeds of the ripe fruits are ready to germinate and so they need to get spread with the help of animals and birds and so there are no defensive chemicals. These seeds spread to different places and the soils help them to germinate under suitable conditions.
The excessive deforestation on the Christmas island crab would be the reduction of population or possibly extinction.
