HUN 1201 - exam 3 (online practice)
According to the Surgeon General's report, to maintain a general level of health, a
person should... - ANS-accumulate a total of 30 minutes of activity most days
When sprinting in the 100-meter race, what would be an important source of energy? -
ANS-creatine phosphate (CP)
What is the primary end product of glycolysis? - ANS-pyruvate
How long will the amount of ATP stored in a muscle cell fuel the muscle's activity? -
ANS-1-3 seconds
What is cellular pyruvate acid converted to when oxygen is scarce? - ANS-lactic acid
How many ATP molecules does each molecule of glucose produce during anaerobic
glycolysis? - ANS-2 ATP molecules
Which fuel sources provide energy during a 45 minute power-walk? - ANS-fatty acids
and glucose
How does ATP provide energy to the body's cells? - ANS-energy is released when a
phosphate group is cleaved from the ATP molecule
What is the largest storage of energy? - ANS-body fat
What is the main disadvantage of using fat as a fuel? - ANS-its slow metabolic
breakdown
What is the primary role of most of the B-vitamins? - ANS-act as coenzymes in
metabolic processes
Can the body generate energy from macronutrients without B-vitamins? - ANS-No -
even though vitamins and minerals do not directly provide energy
What is Wernicke-Korsakoff syndrome? - ANS-an alcohol related syndrome, that
increases the need for thiamin
What are riboflavin's coenzymes? - ANS-FAD and FMN
, What is thiamin's coenzyme? - ANS-TPP
What are niacin's coenzymes? - ANS-NAD and NADP
What is vitamin B6's coenzyme? - ANS-PLP
What is pantothenic acid's coenzyme? - ANS-CoA
What can iodine deficiency during pregnancy increase the risk of the infant being born
with? - ANS-cretinism - mental retardation, stunted growth
What is a vitamin-like substance that is important for metabolism, the structural integrity
of cell membranes, and neurotransmission? - ANS-choline
Which nutrient is destroyed when exposed to light? - ANS-riboflavin
Which B-vitamin would MOST likely relieve tremors and confusion in chronic alcoholics?
- ANS-thiamin, because alcohol increases its metabolism
What are low intakes of vitamin B6, folate, and vitamin B12 linked to? - ANS-high blood
levels of homocysteine
Which B-vitamin is involved in the metabolism of fatty acids? - ANS-pantothenic acid
Trace minerals are defined as... - ANS-essential, but only required in amounts of less
than 100 mg daily
Which vitamin can increase (double) the absorption of non-heme iron? - ANS-vitamin C
What is megadosing? - ANS-taking nutrients in quantities more than 10 times greater
than the recommendation
What can a deficiency in vitamin A cause? - ANS-blindness
A deficiency in which vitamin causes the disease beriberi? - ANS-thiamin
Which water-soluble vitamin can be stored by the body? - ANS-vitamin B12
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