Answer: 5). d) amino acids Amino acids are the basic units that build all proteins. The insulin A chain consists of 21 amino acids and the B chain has 30. Without insulin, the blood glucose builds up in the blood and the cells are starved of their energy source. Some of the symptoms that may occur include fatigue, constant infections, blurred eye sight, numbness, tingling in the hands or legs, increased thirst, and slowed healing of bruises or cuts. The cells will begin to use fat, the energy source stored for emergencies. When this happens for too long a time the body produces ketones, chemicals produced by the liver. 6). d) duodenum The sphincter of Oddi is a muscular valve that controls the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum. 7). e) liver Urea is the end product of a series of biochemical reactions, and the urea production occurs at liver, then ureas is transported to kidney, at last, excreted as urine. The urea is produced from ammonia and carbon dioxide. 8). e) liver All blood proteins are synthesized in liver except for the gamma globulins. The liver plays the major role in producing proteins that are secreted into the blood, including major plasma proteins, factors in hemostasis and fibrinolysis, carrier proteins, hormones, prohormones and apolipoproteins: Solution Answer: 5). d) amino acids Amino acids are the basic units that build all proteins. The insulin A chain consists of 21 amino acids and the B chain has 30. Without insulin, the blood glucose builds up in the blood and the cells are starved of their energy source. Some of the symptoms that may occur include fatigue, constant infections, blurred eye sight, numbness, tingling in the hands or legs, increased thirst, and slowed healing of bruises or cuts. The cells will begin to use fat, the energy source stored for emergencies. When this happens for too long a time the body produces ketones, chemicals produced by the liver. 6). d) duodenum The sphincter of Oddi is a muscular valve that controls the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum. 7). e) liver Urea is the end product of a series of biochemical reactions, and the urea production occurs at liver, then ureas is transported to kidney, at last, excreted as urine. The urea is produced from ammonia and carbon dioxide. 8). e) liver All blood proteins are synthesized in liver except for the gamma globulins. The liver plays the major role in producing proteins that are secreted into the blood, including major plasma proteins, factors in hemostasis and fibrinolysis, carrier proteins, hormones, prohormones and apolipoproteins:.