Free Practice Quiz Question List

1 Foundations of Food Chemistry Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Foundations of Food Chemistry, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

True or false: Viscosity describes a measurable physical characteristic of a food.

A
True
B
False

Choose one

1 point

Which description best explains what a food matrix is?

A
A list of ingredients considered separately
B
A system in which food components interact and are arranged
C
A method for measuring only a food's acidity
D
A process that removes all water from a food

Fill in the blank

1 point

During cooking, starch granules swell and undergo , which helps thicken a sauce.

Written response

1 point

What term describes the unfolding of proteins caused by heat, acid, or mechanical action?

Choose all

1 point

Select all supported links between food structure or composition and sensory qualities.

A
Bubbles can make some foods light.
B
Minerals always determine a food's aroma.
C
Fat droplets can create creaminess.
D
Starch granules determine every food's color.
E
Pigments and browning reactions influence color.

True or false

1 point

True or false: One control factor by itself guarantees safety in every food.

A
True
B
False

Choose one

1 point

What does water activity describe in a food?

A
The total amount of water in a food
B
The rate at which water evaporates during heating
C
How available water is for reactions and microbial growth
D
The amount of water that has been added as an ingredient

Fill in the blank

1 point

Oxygen, light, and heat can promote lipid , potentially producing stale or rancid flavors.

Written response

1 point

What type of mixture is milk when fat droplets are dispersed in a water-based phase?

Choose one

1 point

A mixture contains finely dispersed fat droplets in water. What role can an emulsifier play?

A
They convert fat into water.
B
They help keep droplets from separating.
C
They remove all water from the mixture.
D
They stop all chemical reactions in the food.

Choose all

1 point

Select all statements that accurately describe food-processing effects.

A
Heating can reduce microorganisms.
B
Cooling slows many reactions and microbial growth.
C
Drying increases the total water content of food.
D
Drying removes water.
E
Fermentation uses microorganisms to produce characteristic acids, flavors, or textures.
F
Fermentation always eliminates every food-safety hazard.

Written response

1 point

What physical property describes a food's resistance to flow?

Choose one

1 point

A food containing sugars is heated. Which change can sugars contribute to?

A
Sugars prevent all browning reactions.
B
Sugars make starch granules gelatinize without water.
C
Sugars can contribute to browning when heated.
D
Sugars make fats mix readily with water.

Open ended

1 point

A food is salted or sugared to help limit microbial growth, but it is not dried. Explain how this treatment can affect water activity, why water activity is not the same as total water content, and why the treatment alone does not guarantee food safety.

Choose one

1 point

A sauce thickens as its starch granules absorb water and swell during cooking. Which process best explains this change?

A
Lipid oxidation
B
Starch gelatinization
C
Protein denaturation
D
Fermentation

Choose one

1 point

An egg white changes from liquid to set when heated. Which change in its proteins best explains this?

A
The proteins dissolve into fat droplets.
B
The proteins turn into starch.
C
The proteins unfold and change how they bind together.
D
The proteins reduce the food's water activity by binding salt.

True or false

1 point

A food's total water content and its water activity describe the same property.

A
True
B
False

Written response

1 point

In a sauce, an ingredient helps keep dispersed fat droplets from separating from the water-based phase. What category of ingredient is it?

Choose one

1 point

A prepared food is cooled for storage. Which effect of cooling helps explain its use in preservation?

A
It slows many reactions and microbial growth.
B
It removes all water from the food.
C
It guarantees that every microorganism is destroyed.
D
It always increases water activity.

Choose one

1 point

A food scientist wants to explain why a well-dispersed fat-containing food feels creamy. Which explanation best fits the role of food structure?

A
Water activity determines the food's exact color.
B
Starch granules create all aromas in the food.
C
Acidity directly measures resistance to flow.
D
Dispersed fat droplets can contribute to creaminess.