Question

1. which of the following list of foods contain the best sources of omega - 3 fatty acids?

salmon, krill, butter, avocado
tuna, salmon, krill, olive oil
milk, spinach, watermelon, cherries
trout, pumpkin seeds, walnuts, oranges

1. lipids yield, on average, __________ calories per gram.

3
5
7
9
12

Explanation:

Omega - 3 fatty acids are mainly found in fatty fish (like salmon, tuna, trout), krill, and some plant - based sources such as olive oil. Foods like butter, avocado, milk, spinach, watermelon, cherries, oranges are not significant sources of omega - 3s. Lipids provide 9 calories per gram on average.

Answer:

1. Tuna, salmon, krill, olive oil
2. 9