2025 CCEA GCSE Home Economics: Food and Nutrition 3310 模拟试题及答案详解

Vitamin A is required for the light-sensitive pigments in the retina and for normal immune function. A deficiency of vitamin A is a well-established cause of night blindness and increased susceptibility to infection. Vitamin B1 deficiency is linked to beriberi; vitamin C deficiency to scurvy; vitamin D deficiency to rickets/osteomalacia — none of these is specifically linked to night blindness.

1 mark for A. No credit for any other option.

Vitamin C enhances the absorption of non-haem iron (the form of iron found in plant foods) from the gut. This is why, for example, drinking orange juice with an iron-rich meal can improve iron uptake. Calcium, sodium and iodine absorption are not linked to vitamin C in this way.

1 mark for B. No credit for any other option.

Campylobacter is the most common cause of bacterial food poisoning linked to poultry, and is frequently found on raw or undercooked chicken. Listeria is more associated with unpasteurised dairy products and chilled ready-to-eat foods; Staphylococcus aureus is linked to poor food handler hygiene; E. coli is most associated with undercooked beef/contaminated produce.

1 mark for C. No credit for any other option.

Food labelling regulations require a list of ingredients to be given, listed in descending order of weight. Traffic-light colour coding is a voluntary scheme used by many (but not all) retailers; a serving-suggestion photograph and the retailer's head office location are not mandatory pieces of label information.

1 mark for B. No credit for any other option.

Calcium and vitamin D are essential for building and maintaining bone density; a long-term deficiency in these nutrients is a key risk factor for osteoporosis (weakened, brittle bones). Dental caries is most strongly linked to sugar intake; type 2 diabetes to excess energy/sugar intake and obesity; iron deficiency anaemia to insufficient iron intake.

1 mark for B. No credit for any other option.

Bacteria require moisture, along with warmth, food (nutrients), time and a suitable (near-neutral) pH range, in order to grow and multiply. Low temperatures slow or stop bacterial growth (which is why refrigeration is used to preserve food); a strongly acidic pH inhibits most food-poisoning bacteria (which is why pickling in vinegar preserves food); an absence of nutrients would prevent, not promote, growth.

1 mark for C. No credit for any other option.

Good sources of iron include red meat and liver (haem iron, which is easily absorbed), dark green leafy vegetables such as spinach, pulses and lentils, fortified breakfast cereals, and egg yolk (all non-haem iron sources, which are absorbed less efficiently than haem iron but still contribute significantly to iron intake).

1 mark for each correct food source named, up to a maximum of 3 marks. Accept any valid iron-rich food (e.g. red meat, liver, spinach/dark green leafy vegetables, pulses/lentils, fortified cereal, egg yolk, dried apricots).

Macronutrients are nutrients needed by the body in relatively large amounts and which provide energy: protein, carbohydrate and fat. Micronutrients are needed in much smaller amounts and do not provide energy directly: vitamin C, iron and calcium (vitamins and minerals).

3 marks: 0.5 mark for each of the six nutrients correctly classified, rounded to the nearest whole mark (allow 1 mark for every 2 correct); full 3 marks for all six correct.

Bacteria require warmth (an optimum temperature range, typically around body temperature, for growth), moisture, a supply of food (nutrients to use for growth), sufficient time (to multiply, as bacteria can double in number roughly every 10–20 minutes under ideal conditions), and a suitable (near-neutral) pH range.

1 mark for each correct condition named, up to a maximum of 3 marks, from: warmth, moisture, food, time, suitable pH.

Barriers to being an effective consumer include limited access (e.g. living far from shops, lack of transport), age (e.g. young people or older adults facing specific challenges), ethnicity (e.g. limited availability of culturally appropriate foods), lack of knowledge (e.g. not understanding food labels or nutritional information), and limited resources (e.g. low income, or lack of time or equipment to prepare food).

1 mark for each correct barrier named, up to a maximum of 3 marks, from: access, age, ethnicity, knowledge, resources.

Protein is needed by the body for the growth of new tissue, the repair and maintenance of existing body tissues (such as muscle, skin and organs), and can also be used as a source of energy if insufficient carbohydrate and fat are available. Most plant proteins are 'incomplete', lacking one or more essential amino acids in sufficient quantity (low biological value); complementation is the practice of combining two different incomplete protein sources — for example, beans (low in methionine) with rice (low in lysine) — so that, eaten together, they provide all the essential amino acids the body needs, in a way similar to a 'complete' high biological value protein.

2 marks for correctly explaining the function of protein (growth [1], repair/maintenance of body tissue [1]; accept energy source as an additional valid point). 2 marks for a correct explanation of complementation, referencing combining incomplete protein sources to obtain all essential amino acids, ideally with a valid example.

Saturated fats have fatty acid chains with no carbon-carbon double bonds; they are typically solid at room temperature and are found mainly in animal products, such as butter, lard, and fatty cuts of meat. Diets high in saturated fat are associated with raised blood cholesterol and increased risk of cardiovascular disease. Unsaturated fats contain one (monounsaturated) or more (polyunsaturated) carbon-carbon double bonds; they are typically liquid at room temperature and are found mainly in plant-based and fish oils, such as olive oil, sunflower oil, and oily fish like salmon.

2 marks for correct explanation of the difference (chemical structure and/or physical state at room temperature). 1 mark for a valid saturated fat source (e.g. butter, lard, fatty meat). 1 mark for a valid unsaturated fat source (e.g. olive oil, sunflower oil, oily fish, nuts/seeds).

Folate (a B vitamin) is essential for cell division and the formation of DNA. A deficiency of folate in the early stages of pregnancy is strongly linked to an increased risk of neural tube defects in the developing baby, such as spina bifida, where the spinal column does not close properly. This is why women who are pregnant or planning a pregnancy are advised to take a folic acid supplement, especially in the weeks before conception and during the first trimester. More generally, a folate deficiency can also contribute to a type of anaemia (megaloblastic anaemia), causing tiredness and weakness, as folate is needed for the healthy production of red blood cells.

2 marks for correctly linking folate deficiency to neural tube defects/spina bifida risk in pregnancy. 1 mark for reference to the recommendation of folic acid supplementation before/during early pregnancy. 1 mark for a further valid consequence (e.g. megaloblastic anaemia, or reference to folate's role in cell division/red blood cell formation).

An environmental health practitioner (EHP) inspects food premises (such as restaurants, shops and food manufacturers) to check that they meet legal food hygiene and safety standards, and can award (or lower) Food Hygiene Rating Scheme scores based on their findings. If serious breaches of food safety legislation are found, an EHP has the power to issue improvement notices, close down a food business, or bring a prosecution against it. EHPs also investigate complaints and outbreaks of food poisoning, tracing the source of contamination to help prevent further cases.

Up to 3 marks: 1.5 marks for each of two distinct, correctly explained ways an EHP protects the consumer (e.g. inspecting premises/enforcing hygiene standards; closing down/prosecuting non-compliant businesses; investigating food poisoning outbreaks/complaints), rounded to give whole-mark credit where a response covers one point thoroughly plus a partial second point.

Regularly consuming more energy than is needed, particularly from foods and drinks high in sugar and refined carbohydrates, can lead to excess body weight; being overweight or obese is one of the strongest risk factors for developing type 2 diabetes, as excess body fat can reduce the body's sensitivity to insulin. A sedentary lifestyle, with low levels of regular physical activity, is a second significant contributing factor, as physical activity helps the body use glucose effectively and maintain a healthy body weight.

Up to 3 marks: 1.5 marks for each of two distinct, valid dietary/lifestyle factors correctly explained (e.g. excess energy/sugar intake leading to overweight/obesity; sedentary lifestyle/low physical activity; large portion sizes), rounded to give whole-mark credit for one thorough point plus a partial second point.

Planning meals in advance and writing a shopping list based on that plan helps a family buy only what they need, reducing the amount of food bought that is never used. Storing food correctly (for example, keeping perishable food in the fridge at the right temperature, freezing food before its use-by date, and using a 'first in, first out' system so older food is used before newer food) helps food stay usable for longer and reduces the amount that spoils and is thrown away. Using up leftovers creatively in new meals is a further valid strategy.

Up to 3 marks: 1.5 marks for each of two distinct, correctly explained strategies (e.g. meal planning/shopping lists; correct food storage/stock rotation; using leftovers; understanding date labels), rounded to give whole-mark credit for one thorough point plus a partial second point.

The Fairtrade Foundation certification scheme guarantees that producers (often farmers in developing countries) receive a fair, stable minimum price for their goods, protecting them from sudden falls in world market prices. It also aims to promote better working conditions, community development (through an additional 'Fairtrade premium' paid to producer communities), and more environmentally sustainable farming practices. Products carrying the Fairtrade mark allow consumers to identify and support goods produced under these fairer trading conditions.

Up to 3 marks: 1.5 marks for each of two distinct, correctly explained features (e.g. fair/guaranteed minimum price to producers; improved working conditions; community development premium; support for sustainable farming), rounded to give whole-mark credit for one thorough point plus a partial second point.

A food allergy is an immune system response to a specific food protein; the immune system mistakenly identifies the protein as harmful and reacts, which can cause symptoms ranging from mild (e.g. rash, itching) to severe and potentially life-threatening (e.g. anaphylaxis), often coming on quickly after eating the food. An example is a nut allergy. A food intolerance does not involve the immune system; it is usually caused by the body's difficulty digesting a particular substance (for example, a missing or insufficient digestive enzyme), and typically causes milder symptoms such as bloating, stomach cramps or diarrhoea, which may take longer to appear and are not life-threatening. An example is lactose intolerance, where the body does not produce enough of the enzyme lactase to digest the sugar found in milk.

1 mark for correctly identifying that a food allergy involves the immune system (and can be severe/life-threatening), with valid example. 1 mark for correctly identifying that a food intolerance does not involve the immune system (milder, digestive symptoms), with valid example. 1 mark for a clear overall distinction drawn between the two.

Online shopping offers several advantages for a busy family with young children. It saves time, as there is no need to travel to and physically walk around a shop, which is especially valuable for parents juggling childcare and other commitments; orders can be placed at any time that suits the family, including evenings once children are in bed. It also makes it easier to stick to a budget, as running totals are shown and it is easier to compare prices and avoid impulse purchases (and the distractions/pester power of children in-store). Regularly used items can often be saved to a favourites list or reordered quickly, saving further time and mental effort.

However, there are also disadvantages. Delivery slots may carry an additional cost, and a minimum order value is often required, which could encourage overspending or bulk-buying more than is needed. Consumers cannot personally inspect fresh produce (such as fruit, vegetables or meat) before it is selected, so the quality and freshness received may sometimes be disappointing, and out-of-stock items may be substituted with unsuitable alternatives. A family also needs reliable internet access and a suitable delivery time slot when someone will be at home, which may not always be practical.

Overall, for a busy family with young children, the time saved and reduced in-store stress of online shopping are likely to be valuable benefits, but the family should weigh this against the loss of control over product selection and any additional delivery costs, perhaps using online shopping for the bulk of a routine weekly shop while still visiting a shop occasionally for fresh items.

Level 1 (1-2 marks): basic, undeveloped points made, e.g. simply states an advantage or disadvantage with little explanation. Level 2 (3-5 marks): several relevant advantages and/or disadvantages given with some explanation and reference to the specific context (busy family, young children). Level 3 (6-7 marks): a balanced, well-explained evaluation covering both advantages and disadvantages, explicitly related to the needs of a busy family with young children, reaching a supported overall judgement/conclusion.

A teenager with iron deficiency anaemia should be advised to increase their intake of iron-rich foods, particularly haem iron sources (red meat, liver), which are more easily absorbed than the non-haem iron found in plant sources such as spinach, pulses and fortified cereals; including some haem iron sources alongside non-haem sources is likely to be the most effective dietary strategy. Consuming vitamin C-rich foods or drinks (such as orange juice or a portion of fruit) at the same time as iron-rich meals is valuable advice, as vitamin C significantly enhances the absorption of non-haem iron. Conversely, the teenager should be advised to avoid drinking tea or coffee immediately with or after meals, as compounds in these drinks (tannins) can inhibit iron absorption.

This advice is likely to be effective for many teenagers, as it targets the two key factors (increasing intake, and improving absorption) that influence iron status. However, its effectiveness may be limited if the underlying cause of the anaemia is not dietary — for example, heavy menstrual blood loss in adolescent girls is a common contributing cause, and in this case, dietary advice alone may not fully resolve the anaemia, and the teenager may also need iron supplements or further medical investigation and management alongside the dietary changes.

Level 1 (1-2 marks): basic dietary advice given, e.g. 'eat more iron'. Level 2 (3-5 marks): several relevant, correctly explained pieces of dietary/lifestyle advice given (e.g. iron-rich foods, vitamin C pairing, avoiding tea/coffee with meals). Level 3 (6-7 marks): well-explained, wide-ranging advice covering intake and absorption factors, with an evaluative comment on the likely effectiveness/limitations of dietary advice alone (e.g. reference to possible underlying causes needing further/medical management).

Adolescents (12-18 years) are undergoing a period of rapid growth and physical development, and so generally have high energy requirements and increased protein needs to support the growth of muscle and other tissue. Their calcium and vitamin D requirements are particularly high, to support the significant increase in bone density that occurs during this stage of life (peak bone mass is largely established by early adulthood). Iron requirements are also elevated, especially for girls once menstruation begins, to replace iron lost through menstrual blood.

Older adults (65 years and over) generally have lower energy requirements than adolescents, as metabolic rate typically decreases with age and physical activity levels are often reduced; however, their requirement for many nutrients (relative to their lower energy needs) remains similar or increases, meaning nutrient-dense foods (foods providing a high proportion of nutrients per calorie) become especially important, to avoid malnutrition on a lower food intake. Calcium and vitamin D remain very important for older adults, to help slow the loss of bone density that occurs with age and reduce the risk of osteoporosis and fractures, but for a different reason than adolescents (maintaining rather than building bone mass). Older adults also often need increased dietary fibre and adequate fluid intake, as digestive function can slow with age, and may be at greater risk of constipation and dehydration.

Level 1 (1-2 marks): basic statement of one or two needs for each group with little comparison. Level 2 (3-5 marks): several relevant needs identified for both groups, with some comparison/contrast made. Level 3 (6-7 marks): a well-developed discussion clearly comparing and contrasting the two groups' needs (e.g. energy, protein, calcium/vitamin D, iron, fibre/fluid), explaining the physiological reasons for the differences.

Contactless card payment is quick and convenient, reducing time spent at the checkout since there is no need to count out cash or wait for change; this can be especially useful for a busy shopper. It also removes the need to carry (and risk losing) large amounts of cash, and many contactless cards and payment apps automatically keep a record of spending, which can help with budgeting and tracking. However, because contactless payments are so quick and effortless, some people find it easier to lose track of how much they are spending compared with physically handing over cash, which can make overspending more likely. Contactless payment also depends on technology working correctly (a working card/phone, battery charge, and often a stable connection), and is not usable if these fail, or in shops that do not accept card payments.

Cash, by contrast, gives a very clear, tangible sense of how much money is being spent and how much remains, which can help some consumers stick to a budget more effectively; it also does not rely on technology and is accepted almost everywhere. However, paying with cash is generally slower at the checkout (counting money, receiving and checking change), and carrying cash carries a risk of loss or theft; cash also cannot easily be replaced if lost, unlike a card which can usually be quickly cancelled and reissued.

Overall, contactless payment is likely to suit most shoppers for its speed and convenience, especially for smaller routine purchases, but consumers who struggle with overspending, or who want the clearest possible sense of their remaining budget while shopping, may find cash a more effective method for controlling food spending.

Level 1 (1-2 marks): basic point(s) made about contactless and/or cash with little development. Level 2 (3-5 marks): several relevant advantages/disadvantages of both methods given, with some explanation. Level 3 (6-7 marks): a balanced, well-explained evaluation of both payment methods with a supported overall judgement about their relative suitability for food shopping.

A vegan diet excludes all foods of animal origin, including meat, fish, dairy products, eggs and honey, so all nutrients must come from plant sources (or fortified foods/supplements). This requires careful planning to avoid deficiencies in nutrients that are more readily available from animal foods.

For iron, a vegan can rely only on non-haem iron sources, such as pulses, lentils, tofu, dark green leafy vegetables, and fortified breakfast cereals; since non-haem iron is absorbed less efficiently than haem iron, it is particularly important for vegans to consume vitamin C-rich foods (such as citrus fruit or peppers) alongside these iron sources at meals, to enhance absorption. For calcium, since dairy products (a major calcium source for many people) are excluded, vegans need to rely on foods such as calcium-fortified plant milks (e.g. soya, oat or almond milk), tofu set with calcium, and dark green leafy vegetables such as kale; choosing fortified products is generally the most reliable way to ensure adequate intake. For vitamin B12, this is the nutrient of greatest concern on a vegan diet, as B12 is essentially only found naturally in animal products; vegans should be advised to regularly consume B12-fortified foods (such as fortified plant milks, fortified breakfast cereals, or fortified yeast extract) or, more reliably, to take a B12 supplement, since it is very difficult to obtain a consistently adequate B12 intake from unfortified plant foods alone.

With careful planning around these three nutrients in particular, a vegan diet can be nutritionally adequate; without such planning, however, a vegan is at meaningfully increased risk of iron, calcium and (especially) vitamin B12 deficiency compared with someone eating a varied omnivorous diet.

Level 1 (1-2 marks): basic identification that vegans exclude animal products, with limited/no detail on the three named nutrients. Level 2 (3-5 marks): valid strategies given for at least two of the three named nutrients (iron, calcium, B12), with some explanation. Level 3 (6-7 marks): well-explained, correct strategies given for all three named nutrients, with a supported overall evaluative comment on the adequacy/risk of the vegan diet in this regard.

Salmonella bacteria are commonly associated with raw or undercooked poultry, eggs, and cross-contaminated ready-to-eat foods. In a home kitchen, thoroughly cooking meat, poultry and eggs (ensuring food reaches a high enough internal temperature to kill the bacteria, with no pink meat and juices running clear for poultry) is one of the most effective methods, as it directly destroys the bacteria present. Avoiding cross-contamination is equally important: this means using separate chopping boards and utensils for raw meat/poultry and for ready-to-eat foods such as salad, washing hands thoroughly with soap after handling raw meat or eggs, and cleaning work surfaces and equipment that have been in contact with raw food before they are used for anything else.

Correct chilled storage of raw meat, poultry and eggs (in the fridge, below 5°C, ideally on the bottom shelf so juices cannot drip onto other food) helps to slow bacterial multiplication before cooking. Good personal hygiene more generally — such as not preparing food when unwell, tying back hair, and wearing clean clothing/apron — further reduces the risk of introducing or spreading bacteria.

These methods are generally very effective when followed consistently and correctly, as they address the main routes by which Salmonella reaches, survives on, and multiplies in food. However, their effectiveness relies entirely on people actually following the correct procedures every time; a single lapse (for example, using the same board for raw chicken and salad, or slightly undercooking a dish) can still lead to food poisoning, so consistent good practice and food safety knowledge are essential rather than any single method being sufficient on its own.

Level 1 (1-2 marks): basic point(s) made, e.g. 'cook food properly', with little detail. Level 2 (3-5 marks): several relevant, correctly explained control methods given (e.g. thorough cooking, avoiding cross-contamination, correct storage, hygiene). Level 3 (6-7 marks): well-explained, wide-ranging control methods given with a supported evaluative comment on their overall effectiveness and the importance of consistent practice.

Obesity develops when a person's energy intake, from food and drink, consistently exceeds their energy expenditure over a sustained period, leading to the storage of excess energy as body fat. A range of dietary factors contribute to this: regularly consuming foods and drinks that are energy-dense but not very filling — such as sugary drinks, fast food, and highly processed snacks high in fat and sugar — makes it easy to consume more energy than is needed without realising it. Eating unusually large portion sizes, and frequent snacking between meals, are further significant dietary contributors, as is a diet low in fibre and low in fruit and vegetables, since fibre-rich foods tend to be more filling for their energy content and help control appetite.

Lifestyle factors are equally important. Low levels of physical activity mean that even a normal food intake may exceed what is needed, since fewer calories are being used up; increasingly sedentary jobs, greater reliance on cars for transport, and more time spent on screens (television, computers, phones) instead of active pursuits all reduce daily energy expenditure. Poor sleep patterns have also been linked to disrupted appetite-regulating hormones, which can increase hunger and cravings for energy-dense food, and higher stress levels can lead some people to eat more, or to eat more unhealthily, as a coping mechanism.

Certain groups are known to be at particularly high risk of obesity. People on lower incomes are often at greater risk, as energy-dense processed foods are frequently cheaper than fresh fruit, vegetables and lean protein, and time or resource pressures can make cooking from scratch more difficult. People with sedentary occupations or lifestyles, and those with a family history of obesity (reflecting both shared genetic factors and shared household eating/activity habits), are also at increased risk. Children who grow up in households with poor dietary habits are more likely to develop obesity themselves, both during childhood and into adulthood, as eating patterns learned early in life often persist.

In summary, obesity typically results from a combination of dietary choices (energy-dense foods, large portions, low fibre intake) and lifestyle patterns (low physical activity, poor sleep, high stress), with people on lower incomes, those with sedentary lifestyles, and those with a family history of obesity being at particularly high risk.

Level 1 (1-3 marks): basic, largely descriptive points made about diet and/or activity, with little development; limited use of specialist vocabulary; quality of written communication (QWC) is basic. Level 2 (4-6 marks): a reasonable range of dietary and lifestyle factors identified and explained, with at least one at-risk group identified; competent use of specialist vocabulary; QWC is generally clear with only minor errors. Level 3 (7-10 marks): a wide-ranging, well-explained discussion covering multiple dietary factors, multiple lifestyle factors, and multiple correctly justified at-risk groups, written in clear, well-organised continuous prose using accurate specialist vocabulary throughout (highly competent QWC). Responses that are list-like cannot access Level 3.

The Eatwell Guide is a visual tool, in the form of a divided plate/circle, that shows the recommended proportions of different food groups that should make up a person's diet over a period of time (rather than in a single meal). It divides food into five main groups: fruit and vegetables (recommended to make up just over a third of the diet); starchy carbohydrates such as potatoes, bread, rice and pasta (also just over a third, ideally choosing higher-fibre/wholegrain versions); protein sources such as beans, pulses, fish, eggs and meat; dairy and dairy alternatives; and a small section for foods and drinks high in fat and/or sugar, which should be eaten less often and in small amounts. This visual, proportional format makes it easy for someone to see, at a glance, roughly how much of their diet different food types should make up, without needing to understand detailed nutritional science or calculate exact nutrient quantities.

As a practical tool, the Eatwell Guide can be applied in several ways to help someone achieve a balanced diet. When planning meals for a day or week, a person can check that, across all their meals and snacks combined, they are including a good proportion of fruit and vegetables and starchy carbohydrates, while limiting high-fat/high-sugar foods to small amounts — this is more useful than trying to balance every single meal individually. It can guide food shopping, helping someone choose a trolley of food that reflects the recommended proportions rather than being dominated by processed, energy-dense items. It can also help with portion size awareness, by giving a visual reference for how much space different food groups should take up on a typical plate.

However, the Eatwell Guide has some limitations as a tool: it gives general population guidance and does not account for individual differences in energy needs, specific health conditions, or the particular nutritional needs of certain life stages (such as infants under two, or specific requirements during pregnancy), so it may need to be adapted for some groups. It also does not, by itself, give any information about food safety, cost, or how to prepare meals — it addresses balance of food groups only.

Overall, the Eatwell Guide is a valuable, accessible starting point that helps most people visualise and work towards a balanced diet across their meals and shopping choices, though it works best when combined with an understanding of individual needs and other practical cooking and budgeting skills.

Level 1 (1-3 marks): basic description of the Eatwell Guide (e.g. names some food groups) with little explanation of how it helps achieve balance; QWC basic. Level 2 (4-6 marks): a reasonable explanation of the food groups/proportions shown, with some discussion of practical application (e.g. meal planning or shopping); QWC generally clear. Level 3 (7-10 marks): a well-developed discussion covering the structure/proportions of the guide, multiple practical applications (planning, shopping, portion sizes), and at least one valid limitation, in clear, well-organised prose with accurate specialist vocabulary (highly competent QWC). Responses that are list-like cannot access Level 3.

School-aged children (4-11 years) are growing steadily and need a diet that provides sufficient, steady energy for growth, play and learning, without being excessive, as overfeeding at this age can contribute to childhood obesity. Their protein needs, while lower in absolute terms than an adult's, remain important for ongoing tissue growth. Calcium and vitamin D are particularly important at this stage to support the steady development of strong bones and teeth, and iron is needed to support blood volume growth and prevent iron deficiency anaemia, which can affect concentration and energy levels at school. Establishing regular meal patterns and a wide variety of foods at this age also helps develop healthy long-term eating habits.

Adolescents (12-18 years) generally have substantially higher nutritional needs than younger children, driven by the rapid growth spurt and physical changes of puberty. Energy and protein requirements rise significantly to support this growth in height, muscle and (for girls) the physiological changes associated with the onset of menstruation. Calcium and vitamin D needs are at their highest of any life stage during adolescence, as this is the period when the majority of adult bone density (peak bone mass) is established — inadequate intake now increases the risk of osteoporosis much later in life. Iron needs are also elevated, particularly for adolescent girls, to replace iron lost through menstruation and reduce the risk of iron deficiency anaemia, which is relatively common in this age group.

A family with both a school-aged child and an adolescent can plan and prepare meals to meet both sets of needs efficiently by building meals around a shared, balanced 'core' — for example, a meal following Eatwell Guide proportions, such as a pasta bake with vegetables, a protein source, and a wholegrain component — and then adapting portion sizes and adding extras for the family members with higher needs, such as giving the adolescent a larger portion, an additional serving of a calcium-rich food (such as a glass of milk or yoghurt), or an extra snack between meals. Rather than cooking entirely separate meals for different family members, which would take considerably more time, energy and money, this shared-meal approach with individual adaptations is far more efficient.

To manage time, energy and money effectively, the family could plan meals for the week in advance and shop with a list based on that plan, reducing food waste and unnecessary spending; batch-cook larger quantities of dishes such as soups, stews or bolognese sauce and freeze portions for busy days, saving time and energy (fuel) on multiple cooking occasions; and choose cost-effective, nutrient-dense staple ingredients, such as pulses, seasonal vegetables, and value cuts of meat or oily tinned fish, to help meet the family's higher calcium, iron and protein needs without excessive cost. Careful management of the cooker (for example, cooking more than one dish at once, or making full use of oven space) can also reduce energy costs while preparing meals for the whole family.

Level 1 (1-4 marks): basic, largely separate statements about the needs of each age group, with little or no discussion of meal planning/resource management; QWC basic. Level 2 (5-8 marks): a reasonable, differentiated explanation of the nutritional needs of both age groups (e.g. energy, calcium/vitamin D, iron), with some valid suggestions for shared meal planning and/or resource management; QWC generally clear. Level 3 (9-13 marks): a well-developed, clearly differentiated discussion of both age groups' needs with correct physiological reasoning, combined with a thorough, practical explanation of how meals can be planned/adapted for both groups together, addressing time, energy and money management specifically; written in clear, well-organised continuous prose with accurate specialist vocabulary throughout (highly competent QWC). Responses that are list-like, or that fail to address both the nutritional needs and the resource-management aspect of the question, cannot access the top of Level 3.