2023 Food Science Knowledge Exam

Which of the following is NOT a function that water serves in the body?

• Improving the quality of sleep

• Transportation of nutrients

• Reactant in metabolism

• Maintaining body temperature

Which of the following best defines fatty acid?

• Inorganic molecules that consist of a carbon chain with a carboxyl group at one end

• Inorganic molecules that consist of a carbon chain with a triglyceride at one end

• Organic molecules that consist of a carbon chain with a carboxyl group at one end

• Organic molecules that consist of a carbon chain with a triglyceride at one end

Which of the following best defines margin of safety for an additive?

• Zone between the concentration in which an additive is normally used and the level at which a hazard exists

• Zone between no use (0% concentration) and the concentration at which an additive is normally used

• The concentration at which an additive is normally used with an acceptable error of +/- 5%

• None of the above

Microorganisms and __________ often work together to cause food spoilage.

• people

• animals

• enzymes

• All of the above

Why are three-digit codes used to label products during sensory evaluation?

• Allows for enough unique numbers to be available when doing a sensory study with a large number of samples

• Reduces bias because panelists are more likely to select 1 over 3 or A instead of B or C

• This is a requirement by the Food and Drug Administration

• None of the above

Hydroponic crops are grown with their roots suspended _______.

• in a system that maintains moisture at a concentration of 50% soil and 50% water

• in distilled water

• in municipal tap water

• in a liquid nutrient solution

Which of the following is a technique to separate foods based upon density?

• Centrifugal force

• Sedimentation

• Pressure

• Chemicals

What is the overarching goal that MyPlate.gov, the Physical Activity Guidelines, and the Dietary Guidelines aim to achieve?

• More physical activity

• Fewer calories consumed per day

• Energy balance

• More sleep

If eggs are cooked too long, _________ will develop, and the result will be a green ring around the egg yolk.

• Iron sulfide

• Hydrogen sulfide

• Iron disulfide

• Hydrogen disulfide

Cellulose is indigestible and composed of ________.

• beta-fructose

• beta-sucrose

• beta-lactose

• beta-glucose