A form of fat circulating in the blood that can accumulate on the inner walls of arteries and restrict blood flow is the cholesterol. It comprises about 5 percent of the total fat in the body. Cholesterol build up in the arteries causes for the channels to narrow affecting the flow of blood in these channels. This substance is not at all bad for the body as it is needed to build cells in the body. However, too much of this substance would cause health problems like cardiovascular diseases, atherosclerosis, metabolic syndrome and the like. Cholesterol would come from two sources. One would be from the liver which makes all we need. The other would be from the food we intake especially from the meat.
B lymphocytes are the cells of the immune system that make antibodies to invading pathogens like viruses. They form memory cells that remember the same pathogen for faster antibody production in future infections.
The answer is D because its true all of the muscles attached to the skeleton are involuntary and may be used for movement
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A, C, G, T attached to each sugar is one of the 4 bases