Question

1. a food with 18 grams of protein provides __________ calories.

52
64
72
81
93

1. fish with the highest mercury content include all of the following except:

shark
tilefish
grouper
swordfish
king mackerel

Explanation:

Step1: Recall calorie - protein relationship

Each gram of protein provides 4 calories.

Step2: Calculate calories

Multiply protein grams by 4. So, $18\times4 = 72$ calories.

For question 6:

Shark, Tilefish, Swordfish, and King mackerel are known for high mercury content. Grouper generally has lower mercury levels compared to them.

Answer:

1. C. 72
2. C. Grouper