Lipids and proteins.
Lipids are macromolecules which provide insulation.
A macromolecule is a large molecule. There are four groups of macromolecules: carbohydrates, proteins, nucleic acids and lipids. Lipids consist of glycerol and fatty acids and are constructed from fats, oils, waxes, phospholipids and steroids. A lipid's function is to insulate the body and provide warmth in cold conditions. It can be concluded that a person with very little body fat gets very cold easily and a person with a lot of body fat gets very warm very quickly.
Proteins are biological macromolecule and mostly composed of enzymes.<span> Proteins play a role in the physical make-up of a cell or acts as a cytoskeleton –maintains cell shape and figure. These proteins plays different roles and works with nucleic acids and other macromolecules in the cells including cell cycle, cell adhesion, immune response and cell indicators. <span> </span></span>
Answer: pulmonary artery carries deoxygenated blood away from the heart
The answer to your question is yes
Answer: Chondroitin and collagen fibers
Explanation:
Cartilage is made of the specialized cells which is known as chndrocytes. These chondrocytes produce large amount of extracellular matrix which is composed of collagen fibers, elastin fibers and proteoglycan.
There are no blood vessels in the cartilage to supply nutrients to the chrondrocytes.
The cartilage is flexible and provides strength to the long bones. It is rubber like padding that covers the end of the bones.
It is found in rib cage, nose, ear, bronchial tubes et cetera.
