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What is the most important environmental factor influencing bacterial growth?

Temperature

Last summer, Lorraine's garden yielded more food than her family could eat. She chose to extend the life of many of her fruits and vegetables by preserving them. What do most preservation methods have in common?

They decrease water content that bacteria need to grow

By keeping food cold, the growth of microorganisms is

minimized.

At freezing temperatures, most bacteria

stop growing, but are not dead.

In this animation, on which day does the room temperature orange begin to show spoilage?

8

Organic fruits and vegetables must be grown without the use of

All of these are correct.

How common are food spoilage microorganisms?

Almost all of our foods contain them.

Which of the following foods is likely to have the most preservatives?

Conventional applesauce

Above 100° C (212°F) most bacteria

are destroyed.

Foods grown in accordance with the criteria set forth by the Organic Foods Production Act of 1990 must bear the USDA organic seal.

false

This animation shows that food spoilage microorganisms can be classified by their

growth temperature preferences.