Answer: Option D. Lipids
Explanation:
Lipids store its energy in forms of triglycerides in the cells of animals. lipids can provide energy at a steady pace whereas carbohydrates releases all its energy at once.
Some lipids such as steroid act as hormones which serve as chemical messengers between cells. Steroids are chemical messengers for the body. All steroids are derived from cholesterol,
Cell membranes are made of phospholipids, this type of lipid and this lipd has a polar end because of the phosphate group.
Answer:
The terms old world and the new world are used in the context of history and for the prime objective of differentiating the major ecozones found on the planet. This also helps in categorizing various species of plants and animals that originated in different places and times.
In terms of old and new, Old World signifies to Asia, Europe, and Africa, on the other hand, the New World signifies towards the Americas that comprise South America, North America, and Central America. The New World monkeys possess prehensile tails, while the Old World monkeys don't. This suggests that the prehensile tail originated in the monkeys found in the New World, primarily after the separation of the Americas from Asia and Africa.
Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot.
