RDN EXAM (PRINCIPLES OF
DIETETICS)
Q. How many dietary folate equivalents (DFE) are provided in a
supplement containing 150 mcg folate?
150 DFE
225 DFE
250 DFE
270 DFE - Precise Answer ✔✔The correct answer is C.
1 mcg DFE = 0.6 mcg folic acid from dietary supplements consumed
with food. 150 ÷ 0.6 = 250.
Q. Which set of dietary intake values establishes a goal for dietary intake
that will meet the needs of nearly all healthy people?
Estimated Average Requirement
Recommended Dietary Allowance
Adequate Intake
Tolerable Upper Intake Level - Precise Answer ✔✔The correct answer
is B.
1 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
,Recommended Dietary Allowance (RDA) is the average daily dietary
intake level sufficient to meet the nutrient requirements of nearly all
(97% to 98%) healthy individuals in a group. The Estimated Average
Requirement (EAR) is the intake that meets the established nutrient
needs of one-half of the individuals in a specific group. Adequate Intake
(AI) is an estimate of average requirements when evidence is not
available to establish an RDA. Tolerable Upper Intake Level (UL) is the
maximum intake by an individual that is unlikely to pose risks for
adverse health effect in a healthy individual in a specific group. There is
no established standard for individuals to consume nutrients at levels
above the RDA or AI.
Q. Which of these individuals is most likely to present with Wernicke-
Korsakoff syndrome?
A premature infant
An alcoholic man
A postmenopausal woman
A disabled child - Precise Answer ✔✔The correct answer is B.
The abuse of alcohol often leads to a severe form of thiamin deficiency
known as Wernicke-Korsakoff syndrome.
Q. Which of the following is an example of the Hawthorne effect?
A. "Chloe has always thought that she caught fewer colds when she
remembered to take her zinc supplements, so she is pleased to be in a
2 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
,study now to determine the impact of zinc supplements on one's
susceptibility to colds. She is sure that the supplement she is taking is
helping her avoid catching colds."
B. "Pat, a researcher for a number of clinical trials, has reviewed
preliminary results from a study of the effects of caffeine on
sleeplessness. The data indicate that the findings may be inconclusive so
Pat has asked that the interview questions be revised to make it possible
to identify what may be more subtle effects of caffeine."
C. "Emma is participating in a study of the impact of artificially
sweetened cold drinks on appetite. She believes that she is in the control
group so she plans to report that the beverage she drinks does not affect
h - Precise Answer ✔✔The correct answer is D.
The Hawthorne effect is a term referring to the tendency of some people
to work harder and perform better when they are participants in an
experiment or program. The individuals may change their behavior due
to the attention they are receiving rather than because of any
manipulation of independent variables.
Q. The tricarboxylic cycle begins with the conversion of pyruvate to
acetyl CoA.
oxaloacetate.
ATP.
hydrogen ions. - Precise Answer ✔✔The correct answer is A.
3 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
, The tricarboxylic cycle, also known as the Krebs cycle, uses the two
molecules of pyruvic acid formed in glycolysis and yields adenosine
triphosphate. Before entering the Krebs cycle, the pyruvic acid
molecules are altered. Each of the three carbon pyruvic acid molecules
undergoes conversion to a substance called acetyl-CoA. In the process,
electrons and a hydrogen ion are transferred to nicotinamide adenine
dinucleotide (NAD). The NAD molecule also acquires a hydrogen ion
and becomes NADH. At the end of the Krebs cycle, the final product is
oxaloacetic acid. This is identical to the oxaloacetic acid that begins the
cycle.
Whitney EN, Rolfes S. Understanding Nutrition. 13th ed. Boston, MA:
Cengage; 2012.
Q. A food provides 28 grams of carbohydrates, 8 grams of protein, and 7
grams of fat. What percent of this food's calories comes from fat?
30%
33%
36%
38% - Precise Answer ✔✔The correct answer is A.
(28 g carbohydrate x 4 kcal/g) + (8 g protein x 4 kcal/g) + (7 g fat x 9
cal/g) = 112 kcal from carbohydrate + 32 kcal from protein + 63 kcal
from fat = 207 total kcal 63 kcal from fat ÷ 207 total kcal = 0.30 or 30%
of the energy from fat
4 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
DIETETICS)
Q. How many dietary folate equivalents (DFE) are provided in a
supplement containing 150 mcg folate?
150 DFE
225 DFE
250 DFE
270 DFE - Precise Answer ✔✔The correct answer is C.
1 mcg DFE = 0.6 mcg folic acid from dietary supplements consumed
with food. 150 ÷ 0.6 = 250.
Q. Which set of dietary intake values establishes a goal for dietary intake
that will meet the needs of nearly all healthy people?
Estimated Average Requirement
Recommended Dietary Allowance
Adequate Intake
Tolerable Upper Intake Level - Precise Answer ✔✔The correct answer
is B.
1 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
,Recommended Dietary Allowance (RDA) is the average daily dietary
intake level sufficient to meet the nutrient requirements of nearly all
(97% to 98%) healthy individuals in a group. The Estimated Average
Requirement (EAR) is the intake that meets the established nutrient
needs of one-half of the individuals in a specific group. Adequate Intake
(AI) is an estimate of average requirements when evidence is not
available to establish an RDA. Tolerable Upper Intake Level (UL) is the
maximum intake by an individual that is unlikely to pose risks for
adverse health effect in a healthy individual in a specific group. There is
no established standard for individuals to consume nutrients at levels
above the RDA or AI.
Q. Which of these individuals is most likely to present with Wernicke-
Korsakoff syndrome?
A premature infant
An alcoholic man
A postmenopausal woman
A disabled child - Precise Answer ✔✔The correct answer is B.
The abuse of alcohol often leads to a severe form of thiamin deficiency
known as Wernicke-Korsakoff syndrome.
Q. Which of the following is an example of the Hawthorne effect?
A. "Chloe has always thought that she caught fewer colds when she
remembered to take her zinc supplements, so she is pleased to be in a
2 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
,study now to determine the impact of zinc supplements on one's
susceptibility to colds. She is sure that the supplement she is taking is
helping her avoid catching colds."
B. "Pat, a researcher for a number of clinical trials, has reviewed
preliminary results from a study of the effects of caffeine on
sleeplessness. The data indicate that the findings may be inconclusive so
Pat has asked that the interview questions be revised to make it possible
to identify what may be more subtle effects of caffeine."
C. "Emma is participating in a study of the impact of artificially
sweetened cold drinks on appetite. She believes that she is in the control
group so she plans to report that the beverage she drinks does not affect
h - Precise Answer ✔✔The correct answer is D.
The Hawthorne effect is a term referring to the tendency of some people
to work harder and perform better when they are participants in an
experiment or program. The individuals may change their behavior due
to the attention they are receiving rather than because of any
manipulation of independent variables.
Q. The tricarboxylic cycle begins with the conversion of pyruvate to
acetyl CoA.
oxaloacetate.
ATP.
hydrogen ions. - Precise Answer ✔✔The correct answer is A.
3 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
, The tricarboxylic cycle, also known as the Krebs cycle, uses the two
molecules of pyruvic acid formed in glycolysis and yields adenosine
triphosphate. Before entering the Krebs cycle, the pyruvic acid
molecules are altered. Each of the three carbon pyruvic acid molecules
undergoes conversion to a substance called acetyl-CoA. In the process,
electrons and a hydrogen ion are transferred to nicotinamide adenine
dinucleotide (NAD). The NAD molecule also acquires a hydrogen ion
and becomes NADH. At the end of the Krebs cycle, the final product is
oxaloacetic acid. This is identical to the oxaloacetic acid that begins the
cycle.
Whitney EN, Rolfes S. Understanding Nutrition. 13th ed. Boston, MA:
Cengage; 2012.
Q. A food provides 28 grams of carbohydrates, 8 grams of protein, and 7
grams of fat. What percent of this food's calories comes from fat?
30%
33%
36%
38% - Precise Answer ✔✔The correct answer is A.
(28 g carbohydrate x 4 kcal/g) + (8 g protein x 4 kcal/g) + (7 g fat x 9
cal/g) = 112 kcal from carbohydrate + 32 kcal from protein + 63 kcal
from fat = 207 total kcal 63 kcal from fat ÷ 207 total kcal = 0.30 or 30%
of the energy from fat
4 RDN EXAM (PRINCIPLES OF DIETETICS)___________________________________________@!!@
