Multiple Choice
In the synthetic pathway of serine, 3-phosphoglycerate must first be converted into 3-phosphohydroxypyruvate.
Identify the type of reaction represented by this conversion.
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25. Protein and Amino Acid Metabolism
Review of Metabolism
3:17 minutesProblem 37
Textbook Question
If you were diagnosed as having a diet low in lysine, what foods might you include in your diet to alleviate this problem?
Verified step by step guidance1
Understand that lysine is an essential amino acid, meaning the body cannot produce it and it must be obtained through the diet.
Research and identify foods that are rich in lysine. Common sources include high-protein foods such as meat (e.g., chicken, beef, pork), fish, eggs, and dairy products (e.g., milk, cheese, yogurt).
For plant-based options, consider legumes (e.g., lentils, chickpeas, black beans), soy products (e.g., tofu, tempeh, soy milk), and certain seeds (e.g., pumpkin seeds, quinoa).
Incorporate these lysine-rich foods into your daily meals. For example, you could add lentils to soups, include chicken or fish in your main dishes, or snack on yogurt and seeds.
Monitor your dietary intake to ensure you are meeting the recommended daily allowance for lysine, which varies based on age, gender, and activity level. Consult a nutritionist or healthcare provider if needed for personalized advice.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Lysine
Lysine is an essential amino acid that the body cannot synthesize and must be obtained through diet. It plays a crucial role in protein synthesis, hormone production, and calcium absorption. Foods rich in lysine include meat, fish, dairy products, and certain plant-based sources like legumes and quinoa.
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Protein Sources
Understanding protein sources is vital for addressing lysine deficiency. Animal proteins, such as chicken, beef, and eggs, are typically high in lysine. Plant-based sources, while often lower in lysine, can be combined (e.g., beans with rice) to create a complete amino acid profile, ensuring adequate lysine intake.
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Dietary Adjustments
Making dietary adjustments involves incorporating foods that are high in lysine to correct deficiencies. This may include increasing the intake of lysine-rich foods and possibly reducing reliance on low-lysine foods, such as certain grains and nuts, to achieve a balanced diet that meets nutritional needs.
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