HMGT 2460 Unit 3 Exam Questions & Answers Already Graded A+

Vitamin C is best known for its role in preventing scurvy. It also is critical in the formation and maintenance of this protein found in all connective tissues in our body. - Answer-Collagen The main function of Vitamin E is as an antioxidant. It is prevalent in our fat tissue (adipose tissue) and cell membranes and specifically protects this lipoprotein from being oxidized. - Answer-LDL Phytochemicals are naturally occurring plant compounds with health promoting properties. Betacarotene is classified as which of the following class of phytochemicals? - Answer-Carotenoids Selenium is involved in the maintenance of basal metabolism and body temperature. This trace mineral is only needed in minute amounts to maintain health. Which of the following are good sources of selenium? - Answer-Organ meats Carotenoids have several functions, such as acting as antioxidants, enhancing immune function, protecting the skin from UV rays, and protecting our eyes from oxidative damage. What is another function of carotenoids? - Answer-Can reduce the risk of some cancers A Selenium deficiency can cause a heart disorder. This disorder is named after a province in China and is called which of the following? - Answer-Keshan Disease A symptom of toxicity when taking supplements can include flushing. Which of the following vitamins can cause this burning and tingling sensation if taking large doses? - Answer-Niacin Carotenoids are absorbed better from cooked foods. How much of the Carotenoids that we get from the foods we eat are absorbed? - Answer-20-40% Which antioxidant plays an important role in cell differentiation, the process by which stem cells mature into highly specialized cells? - Answer-Vitamin A or Vitamin ESince we are unable to form antioxidants, we must consume them in our diet. Which of the following vitamins functions as an antioxidant and is critical to the formation and maintenance of collagen? - Answer-Vitamin C This trace mineral is considered an antioxidant and is part of glutathione peroxidase. It helps spare Vitamin E and prevents oxidative damage to our cell membranes. - Answer-Selenium This antioxidant is also a fat-soluble vitamin and is found in many foods, such as vegetable oils, nuts, and seeds. - Answer-Vitamin E This is a chemical reaction in which molecules of a substance are broken down into their component atoms. During this process, atoms lose electrons. - Answer-Oxidation Retinol, cholecalciferol, tocopherol, and phylloquinone are all names of what? - Answer-Fat-soluble vitamins Oxidation occurs during metabolism and can result in the formation of which of the following? - AnswerFree radicals or Provitamin Antioxidants work by stabilizing free radicals or opposing oxidation, therefore protecting our cells from damage. There are certain minerals that function within complex antioxidant enzyme systems and are called what? - Answer-Prooxidant or Cofactor This vitamin enables our eyes to react to changes in light and to see colors. A deficiency can result in night blindness. - Answer-Vitamin A Folate is required for DNA synthesis and cell division, metabolism of amino acids and for synthesis of normal red blood cells. What is the best source of folate in the diet? - Answer-Cooked potatoes