Question 1

An experiment in which the participants do not know whether they are receiving the treatment or placebo but the scientists do is called a

Accepted Answer

A)  disorganized study. 
B)  double-blind study. 
C)  single-blind study. 
D)  cause and effect study.

Question 2

An essential nutrient is one that

Accepted Answer

A)  a person must consume upon awakening each day. 
B)  must be obtained from the diet to sustain life. 
C)  sustains life, but is not necessarily obtained from the diet. 
D)  may not be required under certain conditions.

Question 3

Compared with non-infectious diseases, infectious diseases

Accepted Answer

A)  are longer in duration. 
B)  are less likely to be curable. 
C)  are caused by pathogens. 
D)  are not contagious.

Question 4

Proteins, carbohydrates, lipids, and water are classified as

Accepted Answer

A)  functional foods. 
B)  phytochemicals. 
C)  micronutrients. 
D)  macronutrients.

Question 5

Meats and beans are good food sources of

Accepted Answer

A)  fats. 
B)  lipids. 
C)  proteins. 
D)  carbohydrates.

Question 6

Functional foods are foods that

Accepted Answer

A)  are sterile. 
B)  are organic. 
C)  have a long shelf-life. 
D)  contain large concentrations of nutrients or phytochemicals or zoochemicals.

Question 7

Water is essential for human well-being because

Accepted Answer

A)  it serves as a solvent for chemical reactions within cells. 
B)  it enables nutrient transport around the body. 
C)  it helps to maintain body temperature. 
D)  All of the above

Question 8

Vitamins are classified according to

Accepted Answer

A)  their solubility in water. 
B)  their alphabetical names. 
C)  the amounts required to sustain life.

Question 9

Chronic degenerative diseases are characterized by all of the following except:

Accepted Answer

A)  They are non-infectious. 
B)  They develop quickly. 
C)  They cause tissues to breakdown over time. 
D)  They result in loss of tissue function over time.

Question 10

Dietary fiber is a _____ important for maintaining the health of the digestive system.

Accepted Answer

A)  protein 
B)  carbohydrate 
C)  lipid 
D)  fat

Question 11

Morbidity rate is defined as

Accepted Answer

A)  the number of deaths that occur in a population during a certain time period. 
B)  the number of infant deaths that occur within a given year. 
C)  the number of illnesses or diseases that occur in a population during a certain period of time. 
D)  the number of illnesses or diseases that occur in people over 65 years old during a certain period of time.

Question 12

Babies require 4 essential dietary lipids to support growth and development, whereas older children and adults require only 2 essential dietary lipids. The lipids required in babies are examples of

Accepted Answer

A)  conditionally essential nutrients. 
B)  nonessential nutrients. 
C)  unclassified nutrients. 
D)  phytochemicals.

Question 13

Energy may be defined as

Accepted Answer

A)  the capacity to do work. 
B)  kilocalories. 
C)  a cellular product stored within ATP. 
D)  All of the above

Question 14

The macronutrient class that is important for structural aspects of the body (such as muscle and bone) and also helps to maintain the immune system is

Accepted Answer

A)  carbohydrate. 
B)  protein. 
C)  lipid. 
D)  fat.

Question 15

Researcher bias is avoidable by blinding researchers and subjects about who is receiving treatment.

Accepted Answer

A) True 
 B)False

Question 16

Grains, cereals, and fruits are good food sources of

Accepted Answer

A)  proteins. 
B)  carbohydrates. 
C)  lipids. 
D)  fats.

Question 17

A hypothesis is

Accepted Answer

A)  a complicated equation dividing two variables. 
B)  a prediction about the relationship between variables. 
C)  a list of variables to be studied. 
D)  a series of steps used by scientists to explain observations.

Question 18

The best definition of nutrition is:

Accepted Answer

A)  the science of how living organisms obtain and use food to support processes required for existence. 
B)  the study of essential nutrients. 
C)  the study of newly identified compounds that benefit health. 
D)  the science of weight loss.

Question 19

A relationship where one variable is directly altered by another is called

Accepted Answer

A)  an intervention. 
B)  a cause-and-effect relationship. 
C)  a correlation. 
D)  an epidemiological relationship.

Question 20

Energy-yielding nutrients are all

Accepted Answer

A)  zoonutrients. 
B)  phytonutrients. 
C)  micronutrients. 
D)  macronutrients.

Exam 1: Why Does Nutrition Matter