Distinguish amino acids that must be eaten from those the body can synthesize and assess dietary completeness.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2023–2026.
A student obtains all dietary protein from plants. Which statement about the student’s amino acid supply is correct? A. Human cells can synthesize some amino acids by modifying other organic molecules B. Every amino acid must be taken unchanged from an animal…
A person follows a diet containing no animal products. What must the diet supply for normal synthesis of body proteins? A. A sufficiently varied supply of all essential amino acids B. Only one amino acid, provided in excess C. More cholesterol than any…
Distinguish essential from non-essential amino acids in the human diet.
A nutrition table classifies leucine and threonine as essential, and alanine and glutamate as non-essential. Which conclusion follows for a healthy adult? A. Threonine needs a dietary supply B. Leucine is synthesized in adequate quantities from any other amino…
A food label describes a nutrient as essential. Outline what essential means in this context.
Enzyme G catalyses production of vitamin C in some animals. A disabling change in its gene can prevent synthesis. The table gives hypothetical daily production rates for seven animal species. Identify one species for which vitamin C is not an essential dietary…
Diet can affect health in several ways. Discuss malnutrition and its possible consequences for health.
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