quiz 2

16 flashcardsby Lucky
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1
Which of these is most likely to scavenge reactive oxygen species by direct chemical reaction?
  • biotin
  • thiamine
  • niacin
  • riboflavin
  • antioxidant vitamins such as vitamin C and vitamin E
2
antioxidant enzymes include
  • superoxide dismutase
  • peroxidases
  • catalase
  • all of the above
3
which converts o2 radical to oxygen and hydrogen peroxide ?
  • perioxidases
  • all of the above
  • superoxide dismutase
  • catalase
4
which catalyzes production of hydrogen peroxide
  • catalase
  • superoxide dismutase
  • peroxidases
5
which do you think occurs at a more rapid rate
  • enzyme-catalyzed removal of hydrogen peroxide
  • direct scavenging of hydrogen peroxide by antioxidant vitamins
6
What vitamins are key components of electron carriers NADP+ and FAD?
  • niacin and riboflavin
  • Niacin
  • Riboflavin
  • Biotin
  • thiamine
7
which vitamins play roles in decarboloxayse reactions
  • Niacine
  • thiamine and biotin
  • thiamine
  • Biotin
  • riboflavin
8
which is a consistent of coenzyme a
  • niacin
  • thiamine
  • riboflavin
  • pantothenic acid
  • Biotin
9
when nitrogen is removed from an amino acid, it can be eliminated from the body by its incorporation into
  • glycogen
  • Carbon dioxide
  • urea
  • triglyceride
  • atp
10
which T score corresponds to osteoporosis
  • +1
  • -2.5 or lower
  • -1
  • 0
11
Who is likely to have higher bone mineral density?
  • College aged female athlete, trying to qualify for low weight in the sport with weight classes
  • College aged female athletes in sport, for which high body mass is an advantage
  • College aged female athlete in sport that judges expectations for physical appearance
  • College aged female, athlete and sport with high volume training and advantage and low body mass
  • post menopausal woman
12
A distance runner who is male or eumenorrheic is likely to have a higher bone mineral density in these locations except for.
  • Leg
  • spine
  • Arm
13
iron plays key rolls in
  • both of the above
  • Oxygen binding and/or carrying proteins
  • Classes of redox enzymes
14
blood plasma is
  • both of the above
  • intracellular fluid
  • extracellular fluid
15
metabolic water is water that is
  • Ingested during exercise
  • sweat it out during exercise
  • production by delivery of H ions and electrons to oxygen by the electron transport chain
  • conserved by suppression of urine production during exercise
  • fluid containing carbohydrates and electrolytes
16
Low extra cellular sodium concentration causes all except
  • Impaired central Nervous system function
  • hypertension
  • Impaired Muscle function
  • pulmonary congestion
  • cerebral edema
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