Which of the following is true of water-soluble vitamins?

• A. They are not affected by cooking or heat.
• B. They are stored in the body's fat tissues.
• C. They are excreted in urine and need to be consumed regularly.
• D. They are primarily composed of nonpolar molecules.

Answer: (C)

Verified step by step guidance

1. Begin by understanding the nature of water-soluble vitamins. These vitamins dissolve in water and are readily absorbed into the bloodstream.
2. Consider the impact of cooking or heat on water-soluble vitamins. These vitamins can be sensitive to heat and may be lost during cooking processes.
3. Evaluate the storage mechanism of water-soluble vitamins in the body. Unlike fat-soluble vitamins, they are not stored in fat tissues and need to be replenished regularly.
4. Examine the excretion process of water-soluble vitamins. They are typically excreted in urine, which is why regular consumption is necessary to maintain adequate levels.
5. Analyze the molecular composition of water-soluble vitamins. They generally contain polar molecules, which facilitate their solubility in water, contrasting with nonpolar molecules.