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Multiple Choice
Which statement is false regarding fat-soluble vitamins?
A
Fat-soluble vitamins include vitamins A, D, E, and K.
B
Fat-soluble vitamins are stored in the body's fatty tissues.
C
Excessive intake of fat-soluble vitamins can lead to toxicity.
D
Fat-soluble vitamins are absorbed directly into the bloodstream.
Verified step by step guidance
1
Understand the nature of fat-soluble vitamins: Fat-soluble vitamins include vitamins A, D, E, and K. These vitamins are absorbed along with dietary fat and are stored in the body's fatty tissues and liver.
Recognize the storage mechanism: Unlike water-soluble vitamins, fat-soluble vitamins are stored in the body for longer periods, which can lead to accumulation and potential toxicity if consumed in excessive amounts.
Identify the absorption process: Fat-soluble vitamins are absorbed through the intestinal tract with the help of dietary fats. They are not absorbed directly into the bloodstream; instead, they are incorporated into chylomicrons and transported via the lymphatic system before entering the bloodstream.
Evaluate the statement regarding absorption: The statement 'Fat-soluble vitamins are absorbed directly into the bloodstream' is false because fat-soluble vitamins require incorporation into chylomicrons and transport through the lymphatic system before reaching the bloodstream.
Conclude the analysis: Based on the understanding of absorption and storage mechanisms, the false statement is identified as the one regarding direct absorption into the bloodstream, which contradicts the typical absorption pathway of fat-soluble vitamins.