The main source of starch is:
Correct answer: D. All of the above
- A. Grains
- B. Fruits and tubers
- C. Seeds
- D. All of the above
Explanation
The correct answer is all of these. Grains, fruits, tubers, and seeds all contain starch, though the concentration and prominence as a dietary source vary. Grains such as rice and wheat are staple sources of starch in many diets, while tubers like potatoes and certain fruits like bananas are also significant contributors. Seeds may contain starch, but they are generally not as prominent a source compared to grains and tubers. Hence, all the listed options contribute to starch intake.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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