HNF 150 EXAM QUESTIONS AND ANSWERS ALL CORRECT
What is the first step to a scientific method? - Answer- ask a question
Steps of a scientific method - Answer- observation and question, hypothesis and prediction, experiment, results and interpretations, theory, new observations and questions
...
What is the first step to a scientific method? - Answer- ask a question
Steps of a scientific method - Answer- observation and question, hypothesis and
prediction, experiment, results and interpretations, theory, new observations and
questions
Process of a scientific journal - Answer- scientist to editor, editor to reviewers (3),
reviewers to editor, editor to scientist
How do we measure diet and nutrition? - Answer- anthropometric methods, clinical
examination, diet examination, diet questionnaires, biomarks
clinical examination - Answer- Physical signs associated to severe vitamin or mineral
deficiencies
questionnaires - Answer- knowledge, attitudes, and behavior
food frequency questionnaires - Answer- measures usual amounts of foods commonly
eaten over a time period (most common technique)
Why do we measure diet and nutrition? - Answer- to characterize dietary patterns,
assess exposure to food, identify population groups who lack in nutrition
Biomarks - Answer- measure nutrients or metabolites in biofluids
Types of studies - Answer- case studies, epidemiological studies
epidemiological study - Answer- studies of populations
migration studies - Answer- studies that follow populations who move from one
environment to the next (epidemiological study)
case studies - Answer- study of individuals
intervention studies - Answer- researchers actively intervene in one group of the
population and not the other
, laboratory studies - Answer- studies performed under tightly controlled situations (lab
rats)
Reasons for obesity - Answer- (Dr. Alaimo) agricultural policies, ubiquity, proximity,
"buffet syndrome", lower prices on unhealthy foods
DRI - Answer- dietary reference intakes are nutrient intake standards set for people
living in the U.S. and Canada
RDA - Answer- (recommended dietary allowances) nutrient intake goals based on
experimental evidence and observations
EAR - Answer- (estimated average requirements) establishes nutrient requirements for
given life stages and gender groups
AI - Answer- (adequate intakes) recommended intake. When the DRI finds insufficient
evidence to generate an RDA
UL - Answer- (Upper Intake Levels) identifies potentially toxic levels of nutrient intake
AMDR - Answer- (Acceptable Distribution Ranges) healthy ranges of intake for
carbohydrate, fat, and protein
According to the Dietary Guidelines, you should have more of what? - Answer- veggies
(especially dark green, orange, and legumes), fruit, whole grains, fat-free or low-fat milk
According to the Dietary Guidelines, you should have less of what? - Answer- refined
grains, total fats, added sugars, and salt
Balance study - Answer- type of study in which scientists measure the body's intake and
excretion of a nutrient to determine how much intake is required to balance excretion
cross sectional study - Answer- a study that focuses on a specific time
cohort/ prospective study - Answer- forward-looking medical research in order to
investigate the cause of certain diseases
structural function claim - Answer- a legal but largely unregulated claim permitted on
labels of dietary supplements and conventional foods
(Double) blind experiment - Answer- an experiment in which the participant does not
know about the test until after
tissues - Answer- system of cells working together to preform specialized tasks
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