SCI228 Quiz Week 5

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SCI228 Quiz Week 5
(TCO 3) Which of the following are required components of antioxidant enzyme systems…

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SCI228 Quiz Week 5

SCI228 Quiz Week 5

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(TCO 3) How do antioxidant vitamins stabilize free radicals?
Donate electrons or hydrogens
Enzymatic destruction
Phagocytosis
Break down and convert them to less damaging molecules
(TCO 3) Which of the following are required components of antioxidant enzyme systems?
Antioxidant minerals
Antioxidant vitamins
Phytochemicals
Gastrointestinal microflora
(TCO 3) Carbon and hydrogen are two examples of:
Atoms
Antioxidants
Electrons
Nuclei
(TCO 3) Which of the following diseases has been linked to free radical damage?
Cancer
Heart disease
Diabetes
All of these
(TCO 3) What is an exchange reaction?
A reaction that produces free radicals
A two-part metabolic reaction that includes oxidation and reduction steps
The first stage of cancer development, in which a cell’s DNA mutates
A reaction that converts a provitamin into the metabolically active form
(TCO 3) Which of the following statements is FALSE regarding free radicals?
Free radicals are formed as a by-product of healthy metabolism
Exposure to pollution increases free radical production
Many diseases, such as cancer and heart disease, are linked to free radical damage
(TCO 7) Which water-soluble vitamin can regenerate Vitamin E after it has been oxidized?
Vitamin D
Vitamin B12
Vitamin C
Folate
(TCO 7) Who is at risk for a Vitamin E deficiency?
Premature infants
Postmenopausal women
Male athletes
The elderly
(TCO 7) Which of the following foods are the richest sources of Vitamin E?
Fruits and vegetables
Meat, fish, and poultry
Margarine and vegetable oils
(TCO 7) Which of the following are rich sources of Vitamin C?
Milk and cheese
Seafood
Wheat and oats
Green and red peppers
(TCO 7) Which of the following symptoms is associated with consuming a megadose of Vitamin C?
Night blindness
Scurvy
Nausea and diarrhea
Erythrocyte hemolysis
(TCO 7) The doctor has recently told Julie that she is anemic. Julie should consume ________ with her iron supplement to increase its absorption.
A tablespoon of castor oil
A glass of milk
A glass of orange juice
Scrambled eggs
(TCO 7) Which of the following increases the RDA for Vitamin C?
Smoking cigarettes
Drinking alcohol
Being a vegan
Taking supplements of Vitamin C
(TCO 8) The most critical role that Vitamin A plays in the human body is:
Maintaining a healthy reproductive system
Acting as an antioxidant and scavenging free radicals
Maintaining a healthy immune system
Maintaining healthy vision
(TCO 8) What is the definition of a megadose?
A dose two or more times greater than the recommended amount
A dose five or more times greater than the recommended amount
A dose 10 or more times greater than the recommended amount
A dose 100 or more times greater than the recommended amount
(TCO 8) At what stage in the development of cancer is the DNA mutated?
Initiation
Promotion
Progression
Metastasis
(TCO 8) Which of the following foods would be the best dietary source of pre-formed Vitamin A?
Carrots
Egg
Cantaloupe
Rice
(TCO 8) Which of the following techniques can assess for osteoporosis?
Blood calcium assessment
Dual energy X-ray absorptiometry
Underwater weighing
Bioelectrical impedance testing
(TCO 8) The compact bone that makes up the outer surface of all bone is called:
Cortical
Osteoblast
Collagen
Trabecular
(TCO 8) Which is NOT a symptom of hypercalcemia?
Weakness
Mental confusion
Loss of appetite
Hemorrhaging
(TCO 8) Vitamin D toxicity is associated with:
Sunburns
Suntan lotions
Seafood
Supplements
(TCO 9) Which of the following B-complex vitamins is involved in the metabolism of fatty acids?
Vitamin B6
Vitamin B12
Folate
Pantothenic acid
(TCO 9) Which of the following conditions have Vitamin B6supplements been used to treat?
High cholesterol
Hypertension
Baldness
Premenstrual syndrome
(TCO 9) What is the primary reason why osteoporosis incidents in the United States are expected to increase?
Inadequate treatment options
Increased diagnostic tools
Increased longevity of the population
Decline in milk consumption
(TCO 9) High concentrations of homocysteine in the blood are associated with the development of:
Diabetes
Heart disease
Neural tube defects
Osteoporosis
(TCO 9) Vitamin B12 is essential for the proper functioning of:
Epithelial cells
Nerve cells
Gastric (stomach) cells
Hepatic (liver) cells
(TCO 9) Formed in our bones, hydroxyapatite crystals are mineral complexes comprised of calcium and:
Sodium
Chloride
Phosphorus
Vitamin K

SCI228 Quiz Week 5

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