Passage I

A study was conducted to examine whether female Blattella germanica (a species of cockroach) prefer to eat cat food, cheese, ham, or peanuts. First, 200 mg of each of the 4 foods was separately placed into a single box. Then, adult female B. germanica were added to the box. Figure 1 shows how the mass, in mg, of each food in the box changed over time after the addition of the B. germanica. Table 1 shows the percent by mass of carbohydrates, lipids, proteins, and water, respectively, present in each of the 4 foods tested in the study.

Figure adapted from Prachumporn Lauprasert et al.,"Food Preference and Feeding Behavior of the German Cockroach, Blattella germanica (Linnaeus). ©2006 by the Faculty of Science Chulalongkorn University.

Table adapted from U.S. Department of Agriculture, USDA National Nutrient Database for Standard Reference. Release 24. 2011.

3. Consider the 4 foods in order of the percent by mass of proteins, from lowest to highest. From food to food, as the percent by mass of proteins increased, the mass of food remaining at 28 hr:

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

From table 1, it can be seen that the protein content of peanut is the highest, and the protein content of cat food is the least;

Looking at figure 1, after 28 hrs, cat food has the most and peanut has the least;

So the more protein content, the less the remaining quality