Question

Question was provided via image upload.

Explanation:

The exercise requires completing the summary of the provided passage using key words from the text.

For blank 1), the text lists the "media" carrying bacteria as "raw food, moist surfaces where bacteria has been left, our hands or skin and from coughing or sneezing." The summary lists "moist surfaces, hands and skin and coughing and sneezing," leaving "raw food" as the missing item.

For blank 2), the text states that cells live in "communities contained within a protective film that provide protection" and that these layers are "known as biofilms and they are found on most surfaces and objects." The summary asks to complete the sentence: "Hands, foods and utensils can carry communities of bacterial cells within..." which is completed by "a protective film" and its description as "biofilms" found on most surfaces.

Answer:

1. raw food
2. a protective film (known as biofilms, which are found on most surfaces and objects)