Nutrient Synthesis and Dietary Requirements Quiz
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Questions and Answers

What is the primary symptom associated with acute gastrointestinal upset in cases of copper toxicity?

  • Abdominal pain
  • Diarrhea
  • Constipation
  • Vomiting (correct)

Which of the following is a potential effect of long-term copper toxicity on the neurological system?

  • Improved cognitive function
  • Increased motor coordination
  • Deterioration of neurological processes (correct)
  • Enhanced sensory perception

What is a potential effect of copper toxicity on the musculoskeletal system?

  • Decreased bone density
  • Weakened muscle strength
  • Increased joint flexibility
  • Calcified muscle insertions and exotosis (correct)

Which of the following is a recognized symptom of Wilson's disease, a condition associated with copper toxicity?

<p>Copper deposits in the cornea (C)</p> Signup and view all the answers

What is a potential effect of severe copper toxicity from contamination?

<p>Severe psychiatric and neurologic disorders (B)</p> Signup and view all the answers

What is the main purpose of enzymes in the body?

<p>To speed up chemical reactions without changing themselves (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of hormones?

<p>All hormones are protein in nature (A)</p> Signup and view all the answers

What is the role of cofactors in enzyme systems?

<p>They are sometimes called activators or coenzymes (C)</p> Signup and view all the answers

What is the key principle highlighted by the term 'individualization' in diet planning?

<p>Variety of food choices (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of natural foods?

<p>They contain all the necessary nutrients (C)</p> Signup and view all the answers

What is the relationship between enzymes and metabolic reactions in the body?

<p>Biocatalysts like enzymes are responsible for most chemical reactions in the body (A)</p> Signup and view all the answers

What is a common sign of protein-calorie deficiency?

<p>Muscle wasting and weakness (C)</p> Signup and view all the answers

Which vitamin deficiency is most likely to cause corkscrew hairs and coiled hair?

<p>Biotin (D)</p> Signup and view all the answers

Which nutrient deficiency is associated with easy bruising and purpura?

<p>Vitamin C deficiency (D)</p> Signup and view all the answers

What is a common sign of riboflavin (vitamin B2) deficiency?

<p>Photophobia (B)</p> Signup and view all the answers

Which nutrient deficiency is associated with impaired visual recovery after glare?

<p>Vitamin A deficiency (B)</p> Signup and view all the answers

What is a common sign of zinc deficiency?

<p>Scrotal dermatosis (C)</p> Signup and view all the answers

Which of the following is considered a macronutrient?

<p>Protein (D)</p> Signup and view all the answers

Why is choline considered an essential nutrient?

<p>It cannot be synthesized by the body in adequate amounts (B)</p> Signup and view all the answers

Which statement about conditionally essential nutrients is true?

<p>They are required in the diet only during stress or illness (A)</p> Signup and view all the answers

Which factor does NOT affect the amount of nutrients an individual needs?

<p>Socioeconomic status (D)</p> Signup and view all the answers

What is the criterion for classifying a nutrient as a macronutrient?

<p>Its concentration in the body is above 50 parts per million (C)</p> Signup and view all the answers

Which of the following statements about nutrients is false?

<p>Micronutrients include vitamins and major minerals (C)</p> Signup and view all the answers

Which of the following conditions may lead to nutritional deficiency if nutrient intake is not increased?

<p>All of the above (D)</p> Signup and view all the answers

What does the text suggest about the lifestyle of a heavy smoker?

<p>They need more vitamin C than a non-smoker (B)</p> Signup and view all the answers

Which of the following factors is NOT mentioned in the text as affecting nutrient needs?

<p>Age (A)</p> Signup and view all the answers

Which nutrient needs may be increased for an extremely active athlete?

<p>Both A and B (B)</p> Signup and view all the answers

What is the term used in the text to refer to the study of how genetics affects nutrient needs?

<p>Nutrigenomics (B)</p> Signup and view all the answers
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