Neco Model Questions Vol1 2021 Biology Question 3

Practice essay / theory question 3 from the 2021 Neco Model Questions Vol1 Biology examination. This question covers nutrition, digestion, metabolism .

Neco Model Questions Vol1 2021 Biology Essay / Theory
Topics: nutrition digestion metabolism
Question 3 NECO_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • essay

The labelled diagram shows the major organs of the human digestive system involved in the processing of food.

Question Parts

( a )
List the labels shown in the diagram and give the common name of each organ.
( b )
State the primary site(s) of digestion and the main enzyme(s) involved for each of the following nutrients:
( c )
A meal consists of 150 g of rice (80 % carbohydrate, 7 % protein, 1 % fat), 100 g of grilled chicken (30 % protein, 5 % fat) and 30 g of avocado (15 % fat). Using 4 kcal g⁻¹ for carbohydrate and protein and 9 kcal g⁻¹ for fat, calculate the total caloric value of the meal. Show all steps.
( d )
Deficiency of vitamin B₁₂ leads to a specific disease. Name the disease and explain why the deficiency produces the observed clinical condition.
( e )
In a community whose staple diet is predominantly plant‑based, propose two dietary strategies to reduce the risk of iron‑deficiency anaemia. For each strategy, give a brief scientific justification.

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About This Question

This is Neco Model Questions Vol1 2021 Biology Question 3. It is one of the essay questions from the 2021 Neco Model Questions Vol1 Biology examination.

The question covers nutrition, digestion, metabolism .

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