Answer the following questions true (T) or false (F)
1. During hydrolysis of sucrose, a molecule of sucrose (sugar) is digested by the enzyme sucrase when it breaks the bond with the addition of water by adding a hydroxyl group (OH) to form glucose and hydrogen (H) to form fructose.
2. Wavelike muscular contractions throughout the GI tract propel food and liquid forward by the coordinated action among muscles, nerves, and hormones in the GI tract
3. Sucrase hydrolyzes the sugar sucrose, and maltase hydrolyzes maltose.
1. TRUE
2. TRUE
3. TRUE
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Approximately what percentage of the body's store of vitamin K is derived from GI tract bacterial synthesis?
a. Less than 5 b. 25 c. 50 d. 85
A very rare disorder caused by the lack of an enzyme which causes the build-up of phenylalanine in the blood is called:
1.celiac disease. 2.lactose intolerance. 3.PKU. 4.hemochromatosis.
Which of the following is true about the association between diet and chronic diseases?
a. A moderate weight loss can help improve blood glucose but rarely blood lipids or blood pressure. b. While heart disease, hypertension, diabetes, and cancer are four distinct diseases, they all have similar causes and treatments. c. Quantity, not variety, is the key to getting the health benefits of fruits and vegetables. d. Chronic diseases are neither caused nor prevented by diet alone. e. People who follow dietary advice will likely eliminate most, if not all, of their risk for a chronic disease.
Carbohydrate loading maximizes the storage in skeletal muscles of what compound?
A) glucose B) creatine phosphate C) glycogen D) protein