Describe the processes and organs which are needed for digestion
What will be an ideal response?
Digestion takes place in the GI tract. Chemicals break the molecular bonds in food so that nutrients can be absorbed and transported throughout the body. Saliva mixes with and moistens food in the mouth, making it easier to swallow. Once a bolus of food mixes with gastric juices in the stomach, it becomes chyme. Maximum digestion and absorption occur in the small intestine. Undigested residue enters the large intestine, where water is removed from the chyme as it is prepared for elimination. The remnants, the feces, are eliminated through the anus. The salivary glands, liver, gallbladder, and pancreas are important accessory organs. The salivary glands produce saliva. The liver produces bile, which the gallbladder concentrates and stores. The pancreas produces digestive enzymes and hormones.
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Deficiency in ________ is associated with irreversible mental impairment
a. iron b. iodine c. vitamin C d. vitamin A e. zinc
The Modified MyPyramid for Older Adults emphasizes which of the following?
A) Fluid intake and regular physical activity B) Fiber and protein C) Iron and zinc D) Socialization and weight loss
Treating a protein with acid, heat, or agitation will cause ________, meaning that the three-dimensional structure of the protein has been altered.
A. translation B. denaturation C. transcription D. deamination
All of the following nutritional factors may retard development of cataracts except:
a. eating yellow and orange vegetables containing carotenoids and vitamin A. b. eating fruits and vegetables that contain antioxidants and phytochemicals. c. maintaining normal weight. d. limiting caffeine.