According to About.com, lipids are a diverse group of fat-soluble biological molecules that can be found throughout the body. They exist in the form of triglycerides, steroids, phospholipids, glycolipids, lipoproteins and waxes, Med-Health.net explains.Know More
Elmhurst College states that a 154-pound male body contains roughly 24 pounds of lipids. The majority are triglycerides stored as adipose tissue. With proper hydration, the energy reserve from adipose tissue can maintain body functions for 30 to 40 days without food. Elmhurst College further explains that the fat depot also serves as insulation for the body and as a protection for sensitive organs, including the heart, liver, kidneys and spleen.
According to Med-Health.net, steroids regulate the structure while phospholipids provide the main building blocks of cell membranes. Glycolipids, found on the exterior surface of the membranes, play a vital role in the immune system. Since lipids are not soluble in water, in the bloodstream they are found in the form of lipoproteins.Learn more about Cells
Proteins perform nearly every function carried out by the body on a cellular level. All proteins are built from the same 20 amino acids, and the function of the protein derives from is physical shape in three dimensions. According to About.com, most proteins act in one of seven ways: as antibodies, contractors, enzymes, hormones, storage, structural supports and transporters.Full Answer >
According to the Infoplease website from Pearson Education, the biological importance of osmosis is that it facilitates the distribution of essential nutrients in the body and the excretion of metabolic waste products. Cells have semipermeable membranes, and osmosis makes it possible for liquid solvents to pass through these cell membranes.Full Answer >
White blood cells help to recognize when a foreign and potentially harmful pathogen enters the body, and they respond by releasing antibodies, such as lymphocytes and phagocytes, which attach to the pathogen and work to eradicate it. A high amount of white blood cells are found in the lymph nodes, which is why a symptom or sign of infection in the body can be evident by swollen lymph nodes.Full Answer >
Hemoglobin is the protein used in the blood of all vertebrates to transport oxygen from the lungs to the tissues in the body. A major constituent of blood is water, and since oxygen is not very soluble in water, a protein, hemoglobin, must be used.Full Answer >