FOS3042 Exam 4 questions and answers
Which of the following may be the reason(s) for strawberries frozen in a
home freezer to be mushy when thawed?
1. Slow freezing
2. Fast freezing
3. Polyphenol oxidase activity
4. Cell shrinkage and rupture ✔✔1 and 4
Which of the following is not a possible result of microbial activity?
✔✔Crystallization of water
Why would one sometimes see rice salt shakers? ✔✔Rice helps salt flow
freely by binding excessive moisture.
What is controlled atmosphere storage? ✔✔Storage conditions where
carbon dioxide level is increased and oxygen level is decreased
What causes plasmolysis? ✔✔Placing food in syrup or brine.
In many cases, fermentation causes the pH of foods to ✔✔decrease
What are some of the new technologies to preserve foods without altering
their flavor and texture?
,1. Canning
2. High pressure processing
3. Batch sterilization
4. Oscillating electric fields ✔✔2 and 4
Which is a good way to keep guacamole from turning brown? ✔✔Keeping
in a well-sealed container
Which microorganism is otherwise known as STEC? ✔✔E. coli O157:H7
Which of the following is not a result of oxidation in foods? ✔✔Cloud loss in
orange juice
Heat applied to make scrambled eggs ✔✔Denature proteins
Which of the following statements about chill injury is incorrect?
✔✔Bananas can tolerate lower temperatures than avocados.
Each of the following indicates a desirable characteristic of a chemical
preservative except: ✔✔Enhances flavor and color of the product
Microwaves, UV light and ionizing radiation... ✔✔All of these are correct
, Plasmolysis is... ✔✔All of these
Which of the following accurately explain(s) why someone may want to add
a few grains of rice to their salt shaker? ✔✔To absorb moisture from
ambient air so that those water molecules are not available for a saturated
salt solution on salt crystals.
Which of the following is required by the Good Manufacturing Practices?
✔✔All of the above
What is the name of the technology where the environment around the fruit
or vegetable is altered to slow respiration? ✔✔Modified Atmosphere
Which of the following symptoms may indicate chill injury? ✔✔All of these
Chill injury in fruits and vegetables can occur at temperatures as high as
✔✔56 F
Which is correct about commercial sterility? ✔✔A commercially sterile
product may contain a viable spore that cannot grow due to various
properties of the food.
Irradiation is approved for use with ✔✔spices, seeds, lettuce, potatoes,
meat.
Which of the following may be the reason(s) for strawberries frozen in a
home freezer to be mushy when thawed?
1. Slow freezing
2. Fast freezing
3. Polyphenol oxidase activity
4. Cell shrinkage and rupture ✔✔1 and 4
Which of the following is not a possible result of microbial activity?
✔✔Crystallization of water
Why would one sometimes see rice salt shakers? ✔✔Rice helps salt flow
freely by binding excessive moisture.
What is controlled atmosphere storage? ✔✔Storage conditions where
carbon dioxide level is increased and oxygen level is decreased
What causes plasmolysis? ✔✔Placing food in syrup or brine.
In many cases, fermentation causes the pH of foods to ✔✔decrease
What are some of the new technologies to preserve foods without altering
their flavor and texture?
,1. Canning
2. High pressure processing
3. Batch sterilization
4. Oscillating electric fields ✔✔2 and 4
Which is a good way to keep guacamole from turning brown? ✔✔Keeping
in a well-sealed container
Which microorganism is otherwise known as STEC? ✔✔E. coli O157:H7
Which of the following is not a result of oxidation in foods? ✔✔Cloud loss in
orange juice
Heat applied to make scrambled eggs ✔✔Denature proteins
Which of the following statements about chill injury is incorrect?
✔✔Bananas can tolerate lower temperatures than avocados.
Each of the following indicates a desirable characteristic of a chemical
preservative except: ✔✔Enhances flavor and color of the product
Microwaves, UV light and ionizing radiation... ✔✔All of these are correct
, Plasmolysis is... ✔✔All of these
Which of the following accurately explain(s) why someone may want to add
a few grains of rice to their salt shaker? ✔✔To absorb moisture from
ambient air so that those water molecules are not available for a saturated
salt solution on salt crystals.
Which of the following is required by the Good Manufacturing Practices?
✔✔All of the above
What is the name of the technology where the environment around the fruit
or vegetable is altered to slow respiration? ✔✔Modified Atmosphere
Which of the following symptoms may indicate chill injury? ✔✔All of these
Chill injury in fruits and vegetables can occur at temperatures as high as
✔✔56 F
Which is correct about commercial sterility? ✔✔A commercially sterile
product may contain a viable spore that cannot grow due to various
properties of the food.
Irradiation is approved for use with ✔✔spices, seeds, lettuce, potatoes,
meat.
