Fats should account for approximately ____ of calories in a balanced diet.
a. 40 to 50 percent
b. 10 to 15 percent
c. 55 to 65 percent
d. 25 to 30 percent
Ans: d. 25 to 30 percent
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E. All of the choices are correct.
A. They are involved in cell motility. B. They require ATP to work. C. They are composed of microfilaments. D. They require motor proteins to work. E. They are composed of an internal structure called the axoneme.
What is the name of the process by which carbon sediments on the ocean floor are moved beneath one tectonic plate, and may eventually be released by volcanic activity?
a. sublimation b. infusion c. subduction d. lithification
With the exception of ______, all animals have some tissues organized into organs.
a) sponges and insects b) amphibians c) insects d) roundworms and flatworms e) sponges and some cnidarians
There are ________ kinds of cone cells that allow us to see colors.
A. 600 B. 3 C. 200 D. 10