2022 CCEA GCSE Home Economics: Food and Nutrition 3310 模拟试题及答案详解

Bacteria need warmth, moisture, a food source, time and a suitable pH range in order to multiply. Salt is not a condition needed for bacterial growth - in fact, adding salt draws water out of food (reducing available moisture), which is why salting is used as a method of preserving food and inhibiting bacterial growth. Final answer: C, salt.

[1] for C. Warmth, moisture and time are all genuine conditions needed for bacterial growth, so are not correct distractors for this question; salt inhibits growth rather than promoting it.

Carbohydrate (sugars and starches) is broken down into glucose, which is the body's preferred and most readily available fuel for energy release. Protein's primary role is growth and repair, and fat is a concentrated energy store used once carbohydrate stores are limited. Final answer: C, carbohydrate.

[1] for C. Protein (A) is used primarily for growth and repair, not as the main energy source; fat (B) is a concentrated energy store, but not the body's preferred/first-choice fuel; fibre (D) is largely indigestible and provides negligible usable energy.

The Eatwell Guide divides food into five groups, shown as proportions of the plate. Fruit and vegetables and starchy carbohydrates make up the two largest sections, followed by dairy and alternatives and protein foods; oils and spreads form the smallest section, reflecting the guidance to use these foods sparingly and in small amounts. Final answer: D, oils and spreads.

[1] for D. Fruit and vegetables (A) and protein foods (C) are both larger sections of the Eatwell Guide than oils and spreads; dairy and alternatives (B) is also a larger section.

Calcium is needed to build and maintain bone density, and vitamin D is needed for the body to absorb calcium effectively. A long-term low intake of both nutrients results in weaker, more porous bones, increasing the risk of osteoporosis. Final answer: C, osteoporosis.

[1] for C. Dental caries (A) is linked mainly to frequent sugar intake and poor oral hygiene; iron deficiency anaemia (B) is linked to low iron intake; type 2 diabetes (D) is linked mainly to excess energy intake/obesity, not calcium and vitamin D.

Many religions set rules about which foods may or may not be eaten, for example a person avoiding pork for religious reasons (as in Islam and Judaism). This is a religious factor. Choosing organic food or the cheapest available brand are personal/economic factors, and avoiding nuts due to a diagnosed allergy is a health factor, not a religious one. Final answer: A.

[1] for A. Options B and C describe economic/personal preference factors, and option D describes a health factor, so none is a religious factor.

Food provenance is described using the terms grown (for plant crops), reared (for farmed animals kept for meat, milk or eggs) and caught (for wild fish and game). A dairy cow is a farmed animal kept and fed by a farmer, so its origin is described as 'reared'. Final answer: B, reared.

[1] for B. 'Grown' (A) applies to plant crops; 'caught' (C) applies to wild food sources such as sea fish; 'processed' (D) describes a later stage of production, not the food's origin.

The Eatwell Guide divides foods into five main groups. Semi-skimmed milk belongs to the 'dairy and alternatives' group. Wholemeal pasta is a starchy carbohydrate food, so belongs to the 'potatoes, bread, rice, pasta and other starchy carbohydrates' group. Chicken breast is a source of protein, so belongs to the 'beans, pulses, fish, eggs, meat and other proteins' group. Broccoli is a vegetable, so belongs to the 'fruit and vegetables' group. Final answer as listed above.

[1] mark per correctly classified food item, to a maximum of 4, as listed in the solution.

Campylobacter is most commonly associated with raw or undercooked poultry. E. coli is most commonly associated with undercooked minced beef and contaminated raw vegetables. Listeria is most commonly associated with unpasteurised dairy products, such as soft cheeses, and chilled ready-to-eat foods such as pate, which can multiply even at refrigeration temperatures. Salmonella is most commonly associated with raw or undercooked eggs and poultry. Staphylococcus aureus is most commonly spread by a food handler with an infected cut, boil or septic spot, particularly if food is then left at a warm temperature, allowing the bacterium's toxin to build up. Final answer as listed above.

[1] mark per correctly matched bacterium and food source, to a maximum of 5, as listed in the solution. Accept other food sources genuinely and commonly associated with each named bacterium.

Iron is found in both animal (haem) and plant (non-haem) sources. Good sources include red meat, liver, pulses and lentils, dark green leafy vegetables such as spinach, and fortified breakfast cereals. Any four distinct valid sources should be credited. Final answer: red meat, liver, pulses/lentils and dark green leafy vegetables.

[1] mark for each valid distinct food source of iron named, to a maximum of 4. Accept: red meat, liver, kidney, pulses/lentils/beans, dark green leafy vegetables, fortified breakfast cereals, egg yolk.

Osteoporosis risk is increased by a long-term low intake of calcium, a low intake of vitamin D (needed for calcium absorption), a lack of weight-bearing physical exercise, being post-menopausal (due to reduced oestrogen, which helps protect bone density), smoking, and excessive alcohol consumption. Any four valid risk factors should be credited. Final answer: low calcium intake, low vitamin D intake, lack of weight-bearing exercise and being post-menopausal.

[1] mark for each valid risk factor named, to a maximum of 4. Accept: low calcium intake, low vitamin D intake, lack of weight-bearing/physical exercise, being post-menopausal/older age, smoking, excessive alcohol consumption, family history.

UK food labelling law sets out mandatory information that must appear on pre-packed food. This includes the name of the food, a list of ingredients (listed in descending order of weight), and a use-by or best-before date. Other mandatory information includes the weight/volume, storage instructions, the name and address of the manufacturer, and allergen information. Any three valid mandatory items should be credited. Final answer: name of the food, list of ingredients and use-by/best-before date.

[1] mark for each valid piece of mandatory label information, to a maximum of 3. Accept: name of the food, list of ingredients, use-by/best-before date, weight/volume, storage instructions, name and address of the manufacturer, allergen information.

Primary processing involves the initial stage of turning a raw material into a food or ingredient, before any further processing. Examples include harvesting wheat, milking a dairy cow, and catching fish. This is distinct from secondary processing, which further transforms a primary product, for example turning wheat into flour and then bread, or milk into cheese. Any three valid examples of primary processing should be credited. Final answer: harvesting wheat, milking a dairy cow and catching fish.

[1] mark for each valid example of a primary processing/production activity, to a maximum of 3. Accept: harvesting a crop (e.g. wheat), milking a dairy cow, rearing/slaughtering livestock, catching fish.

The '8 tips for eating well' are used, alongside the Eatwell Guide, to help the public achieve a balanced diet. They include: base meals on higher fibre starchy foods; eat lots of fruit and vegetables; eat more fish; cut down on saturated fat and sugar; eat less salt; get active and maintain a healthy weight; drink plenty of fluids; and don't skip breakfast. Any three valid tips should be credited. Final answer: eat more fish, eat less salt and don't skip breakfast.

[1] mark for each valid tip named, to a maximum of 3. Accept any of the 8 tips: base meals on starchy foods, eat lots of fruit and veg, eat more fish, cut down on saturated fat and sugar, eat less salt, get active/healthy weight, drink plenty of fluids, don't skip breakfast.

School-aged children (4-11 years) are growing rapidly and are often physically active, so they need sufficient energy and protein to support growth and development. Calcium and vitamin D are particularly important to build strong, healthy bones and teeth during this period of skeletal growth. Iron is needed to support the increase in blood volume that comes with growth. Because children have a smaller stomach capacity relative to their energy needs, regular meals and healthy snacks are recommended rather than three large meals, to help them meet their nutrient and energy requirements without being over-full. Final answer: children need adequate energy, protein, calcium, vitamin D and iron for growth, provided through regular meals and snacks.

[1] need for adequate energy/protein for growth; [1] need for calcium and/or vitamin D for developing bones/teeth; [1] need for iron to support increasing blood volume; [1] need for regular meals/snacks due to small stomach capacity relative to energy needs. Maximum 4 marks for any four distinct, correctly explained points.

Saturated fat, found in foods such as fatty meat, butter and full-fat dairy products, raises the level of LDL ('bad') cholesterol circulating in the blood. Over time, excess LDL cholesterol is deposited on the inner walls of the arteries, forming fatty deposits called atheroma. This narrows the arteries (atherosclerosis) and restricts blood flow to the heart and other organs. If blood flow to the heart becomes severely restricted or blocked, this increases the risk of a heart attack; if it occurs in the arteries supplying the brain, it increases the risk of a stroke. Final answer: saturated fat raises LDL cholesterol, which narrows the arteries through fatty deposits, increasing the risk of CVD.

[1] saturated fat raises LDL/blood cholesterol levels; [1] excess cholesterol is deposited in the artery walls (atheroma/fatty deposits); [1] this narrows the arteries/restricts blood flow (atherosclerosis); [1] correctly links this to an increased risk of a specific CVD outcome (e.g. heart attack or stroke).

Iron from plant sources (non-haem iron) is harder for the body to absorb than the haem iron found in meat. Vitamin C helps convert non-haem iron into a more soluble form that the body can absorb more easily in the small intestine. This means eating a food or drink rich in vitamin C, such as orange juice or a pepper, alongside an iron-rich plant food, such as lentils or spinach, at the same meal increases the amount of iron the body is able to absorb. This interaction is particularly important for people such as vegetarians and vegans, helping to reduce their risk of developing iron deficiency anaemia. Final answer: vitamin C enhances the absorption of non-haem iron, so combining vitamin C-rich and iron-rich foods increases overall iron uptake.

[1] non-haem/plant iron is harder to absorb than haem/meat iron; [1] vitamin C converts non-haem iron into a more easily absorbed form; [1] correctly links this to combining a vitamin C source with an iron-rich food at the same meal; [1] correctly links this interaction to reducing the risk of iron deficiency anaemia.

Income is an economic factor affecting food choice. A person with a lower income has a smaller budget available for food, so they are more likely to choose cheaper, filling staple ingredients (such as pasta, rice, and tinned or frozen foods) and buy own-brand products, and may buy less fresh fruit, vegetables, meat or fish, which tend to be more expensive per portion. A person with a higher income has greater choice and can more easily afford a wider range of foods, including more expensive convenience foods, organic produce, higher-welfare meat, or eating out/ordering takeaways more often. Final answer: income determines the food budget available, affecting how much fresh/premium food versus cheap staple food a person can choose to buy.

[1] lower income limits the food budget available; [1] this is correctly linked to relying more on cheaper/staple/own-brand foods; [1] higher income allows a wider range of/more expensive food choices; [1] a relevant, correctly explained specific example given (e.g. affordability of fresh fruit and vegetables, meat/fish, or convenience/organic food).

Cross-contamination happens when harmful bacteria are transferred from raw food (or a person) onto ready-to-eat food, equipment or surfaces. It can be prevented by using separate chopping boards and utensils for raw meat/fish and for ready-to-eat foods such as salad; storing raw meat and fish on the bottom shelf of the fridge, below cooked and ready-to-eat food, so that any drips cannot fall onto other food; washing hands thoroughly with soap and hot water after handling raw food and before handling ready-to-eat food; and using separate, clean cloths for wiping raw food areas rather than reusing the same cloth elsewhere in the kitchen. Final answer: separate equipment, correct fridge storage position, thorough handwashing and separate cloths all help prevent cross-contamination.

[1] use of separate chopping boards/utensils for raw and ready-to-eat food; [1] correct storage position in the fridge (raw food stored below/away from cooked or ready-to-eat food); [1] thorough handwashing between handling raw and ready-to-eat food; [1] use of separate/clean cloths, or another valid additional distinct prevention method (e.g. cleaning surfaces between tasks). Maximum 4 marks for any four distinct, correctly explained points.

Primary processing is the first, initial stage in which a raw agricultural product is obtained or prepared, for example harvesting wheat from a field, or producing (milking) milk from a dairy cow. Secondary processing takes this primary product and transforms it further into a different food product, for example milling harvested wheat into flour and then baking that flour into bread, or turning milk into cheese through processes such as adding a starter culture and rennet. The key difference is that primary processing produces the basic raw ingredient, while secondary processing changes that ingredient into a new, different food. Final answer: primary processing obtains the raw ingredient (e.g. harvesting wheat/producing milk); secondary processing transforms it into a new food (e.g. bread/cheese).

[1] correct definition/description of primary processing; [1] a valid example of primary processing given (e.g. harvesting wheat, producing milk); [1] correct definition/description of secondary processing; [1] a valid, correctly linked example of secondary processing given (e.g. wheat milled and baked into bread, or milk turned into cheese).

Vitamins B and C are water-soluble, meaning they dissolve easily in water. When vegetables are boiled in a large volume of water, especially for a long cooking time, these vitamins leach out of the vegetable and into the cooking water; if this water is then poured away, the vitamins are lost. Cooking methods that use little or no water and shorter cooking times, such as steaming, stir-frying or microwaving, minimise contact between the vegetable and water, so retain more of the water-soluble vitamin content. Using cooking water in a sauce, soup or gravy rather than discarding it can also help reduce the loss of these nutrients. Final answer: boiling in a lot of water for a long time destroys more water-soluble vitamins (B and C) than methods such as steaming that use little or no water.

[1] vitamins B and C are water-soluble; [1] boiling in a large volume of water for a long time causes these vitamins to leach out/be lost; [1] a lower-water method (e.g. steaming, stir-frying, microwaving) retains more of these vitamins; [1] a further valid, correctly explained point (e.g. using the cooking water in a sauce/gravy reduces nutrient loss, or shorter cooking time reduces vitamin loss).

Religious and cultural beliefs often set rules or guidance about which foods are acceptable to eat and how food should be prepared. For example, some religions prohibit the eating of pork, and followers of Islam or Judaism may only eat meat that has been prepared according to halal or kosher requirements respectively. Some religions promote periods of fasting or abstaining from certain foods at particular times of year, such as Lent or Ramadan. Cultural background can also influence the types of ingredients, dishes and cooking methods that are familiar and preferred within a family, shaping everyday food choices even outside of specific religious rules. Final answer: religious/cultural beliefs can prohibit certain foods, require specific preparation methods, or promote fasting, and cultural background shapes familiar food preferences.

[1] religion/culture can prohibit or restrict certain foods being eaten (e.g. pork); [1] a valid, correctly named specific preparation requirement (e.g. halal, kosher); [1] religion/culture can involve periods of fasting/abstaining from food; [1] a further valid point about cultural influence on familiar/preferred foods and dishes.

Energy balance describes the relationship between the energy a person takes in from food and drink and the energy they use, or expend, through their basal metabolic rate (BMR, the energy needed to keep the body's basic functions running at rest) and their physical activity level (PAL). When energy intake equals energy output, a person is in energy balance and their body weight remains stable. If a person regularly consumes more energy than they use (a surplus), the excess energy is stored by the body as fat, causing weight gain over time. If a person regularly uses more energy than they consume (a deficit), the body must use stored fat for energy, causing weight loss. Final answer: energy balance is when energy intake equals energy output; a surplus causes weight gain, a deficit causes weight loss.

[1] correct definition of energy balance (energy intake equals energy output); [1] correct reference to BMR and/or PAL as components of energy output; [1] correctly explains that a surplus of energy intake over output leads to weight gain (fat storage); [1] correctly explains that a deficit of energy intake below output leads to weight loss.

A pregnant woman needs an increased intake of folate (folic acid), particularly in the early stages of pregnancy, as this helps to reduce the risk of neural tube defects, such as spina bifida, developing in the baby. She also needs an increased intake of iron, to support the increase in blood volume that occurs during pregnancy and to supply the developing baby's needs, helping to reduce the risk of anaemia. In addition, pregnant women are advised to avoid certain higher-risk foods, such as unpasteurised soft cheeses and pate (which may contain listeria) and raw or undercooked eggs and meat (which may contain salmonella), because their immune system changes during pregnancy and some infections can be passed on to and seriously harm the unborn baby. Final answer: pregnant women need more folate and iron than usual, and should avoid specific higher-risk foods linked to food poisoning bacteria that can harm the baby.

[1] increased need for folate/folic acid, correctly linked to reducing the risk of neural tube defects; [1] increased need for iron, correctly linked to increased blood volume/preventing anaemia; [1] identifies a food or food group that should be avoided during pregnancy (e.g. unpasteurised soft cheese/pate, raw or undercooked eggs); [1] correctly links avoiding this food to the risk of a named food poisoning bacterium or harm to the unborn baby.

Three modifications, each with a justification, are as follows. First, replace the standard minced lamb (20% fat) with a leaner minced lamb (around 5% fat) or an alternative leaner meat such as minced turkey; this reduces the overall saturated fat content of the dish, helping to lower the risk of raising blood cholesterol. Second, use a low-salt or reduced-salt stock cube and omit the additional level teaspoon of added salt, replacing it with herbs, pepper or other seasoning; this reduces the sodium content of the dish, helping to lower the risk of high blood pressure associated with excess salt intake. Third, reduce the quantity of butter used in the potato topping and replace the full-fat milk with semi-skimmed milk; this reduces the saturated fat content of the topping while still achieving a creamy mashed potato texture. Final answer: use leaner mince, use low-salt stock with no added salt, and use less butter with semi-skimmed milk in the topping.

For each of three modifications: [1] a valid, specific modification to the recipe; [1] a correct justification linking the modification to reduced saturated fat or reduced salt intake and the associated health benefit. Maximum 6 marks (2 marks per modification+justification pair, up to 3 pairs). Accept other valid modifications, e.g. adding grated carrot/lentils to bulk out the meat and reduce the proportion of fat per portion, or draining off fat after browning the mince.

Level of response guidance (indicative content, to be marked using the 3-level rubric below): Dietary methods - reducing portion sizes, cutting down on energy-dense and high-sugar foods and sugary drinks, and choosing lower-fat cooking methods can all help reduce excess energy intake; increasing intake of fruit, vegetables and fibre-rich starchy foods can help a teenager feel fuller for longer on fewer calories, supporting weight management. Physical activity methods - increasing regular physical activity, such as walking, cycling or sport, increases energy output, helping to create the energy deficit needed to reduce or maintain weight, and also has wider health benefits. Evaluation - dietary changes and increased physical activity work best in combination rather than alone; methods that are too restrictive (e.g. very low-calorie diets) are hard for a teenager to sustain long-term, may risk inadequate nutrient intake during a period of growth, and could contribute to unhealthy attitudes to food, so a balanced, gradual and sustainable approach involving the whole family is generally considered more effective and appropriate for this age group. Final answer: a combination of reduced portion sizes/energy-dense food, increased fruit/veg/fibre and increased physical activity is effective, but methods must be balanced and sustainable rather than overly restrictive for a growing teenager.

Level of response mark scheme (6 marks). Level 3 - Highly competent (5-6 marks): identifies and explains at least two dietary methods and physical activity, with a genuine evaluative comparison (e.g. discussing sustainability/suitability for a teenager); accurate use of terminology; clear, well-organised writing. Level 2 - Competent (3-4 marks): identifies at least two relevant methods (dietary and/or physical activity) with some explanation, but limited evaluation/comparison; mostly clear writing with minor errors. Level 1 - Basic (1-2 marks): identifies one or two relevant methods with little or no explanation or evaluation; writing may be list-like or contain errors that partially hinder meaning. 0 marks: no creditable response.

Level of response guidance (indicative content, to be marked using the 3-level rubric below): Storage - raw meat and fish should be stored on the bottom shelf of the fridge, below cooked and ready-to-eat food, to prevent drips of blood or juices contaminating other food; food should be kept covered, and the fridge should not be overfilled so that cold air can circulate. Personal hygiene and preparation - hands should be washed thoroughly with soap and hot water before handling food and after handling raw food, particularly raw meat, fish, poultry and eggs; separate chopping boards, knives and utensils should be used for raw and ready-to-eat food, to prevent cross-contamination; work surfaces should be cleaned between tasks. Cooking and reheating - food, particularly meat and poultry, should be cooked thoroughly so that it is piping hot throughout, since this destroys harmful bacteria; leftovers should be cooled quickly and refrigerated promptly, rather than left standing at room temperature, to prevent bacteria multiplying, and should only be reheated once, until piping hot throughout. Final answer: correct fridge storage position, separate equipment and thorough handwashing to prevent cross-contamination, together with thorough cooking and prompt cooling/refrigeration of leftovers, all reduce the risk of food poisoning.

Level of response mark scheme (6 marks). Level 3 - Highly competent (5-6 marks): discusses at least four distinct, accurate points spanning storage, personal hygiene/preparation and cooking/reheating, each clearly explained in terms of preventing food poisoning; accurate terminology; clear, well-organised writing. Level 2 - Competent (3-4 marks): discusses two to three distinct, accurate points, with some explanation of how they prevent food poisoning; mostly clear writing with minor errors. Level 1 - Basic (1-2 marks): states one or two relevant points with little or no explanation of how they reduce the risk of food poisoning; writing may be list-like or contain errors that partially hinder meaning. 0 marks: no creditable response.

Level of response guidance (indicative content, to be marked using the 3-level rubric below): Financial incentives - retailers use offers such as multibuys (e.g. 'buy one get one free'), loyalty cards/points schemes, and discounted own-brand ranges to encourage customers to buy more of a product, try a new brand, or remain loyal to a particular retailer; these can genuinely save money for planned purchases, but can also encourage people to buy more than they need. Store layout - retailers deliberately design store layout, for example placing everyday essentials such as milk and bread at the back of the store so customers walk past other tempting products, positioning high-margin or impulse items (such as sweets) at checkouts and at eye level on shelves, and using end-of-aisle displays to draw attention to promoted products; this increases the range of products a customer is exposed to and encourages impulse buying. Advertising - television, social media, in-store promotions and packaging design are used to build brand awareness, create a desirable image around a product, and persuade consumers to choose one brand over another, sometimes regardless of nutritional quality or price. Evaluation - together, these strategies can lead consumers to spend more than planned or choose less healthy/more expensive options than they might otherwise, meaning an effective, informed consumer needs to be aware of these techniques (e.g. by shopping with a list) in order to make considered rather than impulse-driven choices. Final answer: retailers use financial incentives, store layout and advertising together to increase exposure to products and encourage spending beyond a shopper's original plan.

Level of response mark scheme (9 marks). Level 3 - Highly competent (7-9 marks): discusses all three named strategies (financial incentives, store layout, advertising) with accurate, specific examples and a clear evaluative point about their combined effect on consumer behaviour; accurate terminology; clear, well-organised prose with few errors. Level 2 - Competent (4-6 marks): discusses two to three strategies with generally accurate but less developed examples/explanation; some evaluation; mostly clear writing with minor errors. Level 1 - Basic (1-3 marks): identifies one or two strategies with little explanation or example; writing may be list-like or contain errors that partially hinder meaning. 0 marks: no creditable response.

Level of response guidance (indicative content, to be marked using the 3-level rubric below): Advantages of online shopping - saves time and is convenient, particularly for people with limited mobility, young children, or a busy schedule; makes it easier to compare prices and stick to a planned shopping list/budget, since the total cost is visible before checkout; avoids having to carry heavy shopping. Disadvantages of online shopping - delivery charges or a minimum order value may apply, adding to cost; the customer cannot see, smell or check the freshness/quality of fresh produce before it is chosen, and substitutions may be made if an item is unavailable; it requires internet access, a device and digital skills/confidence, which may be a barrier for some consumers, such as some older people. Advantages of in-person supermarket shopping - the shopper can personally select and check the quality, freshness and use-by dates of items; they can take advantage of in-store-only offers and see the full range of products available. Disadvantages of in-person shopping - it takes more time and requires travel to the store; being physically in the store exposes the shopper to more marketing techniques such as store layout and impulse displays, which can lead to overspending. Evaluation - the more suitable option depends on the individual consumer's circumstances, such as their access to transport/the internet, mobility, budget, and how much they value convenience versus being able to personally select fresh food. Final answer: online shopping offers convenience and easier budgeting but limits quality-checking and needs internet access, while in-person shopping allows personal selection but takes more time and exposes shoppers to more in-store marketing; suitability depends on the individual consumer.

Level of response mark scheme (9 marks). Level 3 - Highly competent (7-9 marks): discusses at least one clear advantage and one clear disadvantage for both online and in-person shopping (four distinct points in total), with a genuine evaluative conclusion linking suitability to different consumers' circumstances; accurate terminology; clear, well-organised prose with few errors. Answers must refer to both positive and negative points to access this level. Level 2 - Competent (4-6 marks): discusses at least two to three relevant advantages/disadvantages across both shopping methods, with some development but limited evaluation; mostly clear writing with minor errors. Level 1 - Basic (1-3 marks): identifies one or two relevant points with little explanation or comparison; writing may be list-like or contain errors that partially hinder meaning. 0 marks: no creditable response.

Level of response guidance (indicative content, to be marked using the 3-level rubric below): Dietary factors - a diet high in saturated fat raises LDL ('bad') cholesterol, which is deposited in artery walls as atheroma, narrowing the arteries (atherosclerosis) and restricting blood flow; a diet high in salt raises blood pressure (hypertension), which puts additional strain on the heart and blood vessels; a diet low in fibre and fruit and vegetables removes protective effects (fibre can help lower cholesterol, and fruit and vegetables provide protective vitamins/antioxidants and potassium, which helps regulate blood pressure); regularly consuming more energy than is used contributes to obesity, which is itself an additional risk factor for CVD. Lifestyle factors - smoking damages the lining of the arteries and reduces the oxygen-carrying capacity of the blood, accelerating atherosclerosis; a sedentary lifestyle (lack of regular physical activity) contributes to weight gain, higher blood pressure and poorer cholesterol control; excessive alcohol consumption can raise blood pressure and contribute to weight gain; chronic stress can also raise blood pressure over time. Groups most at risk - people with a family history of CVD, older adults, people who are overweight or obese, people who smoke, and people with existing high blood pressure or high cholesterol are all at increased risk. Dietary and lifestyle advice to manage risk - reduce intake of saturated fat and salt; increase intake of fruit, vegetables, fibre-rich starchy foods and oily fish (a source of omega-3 fatty acids); maintain a healthy body weight through energy balance; stop smoking; increase regular physical activity; and reduce alcohol intake to within recommended limits. Final answer: a combination of dietary factors (saturated fat, salt, low fibre/fruit-veg, excess energy intake) and lifestyle factors (smoking, inactivity, excess alcohol, stress) increases CVD risk, particularly for at-risk groups, and risk can be reduced through combined dietary and lifestyle changes.

Level of response mark scheme (12 marks). Level 3 - Highly competent (9-12 marks): analyses at least three dietary factors and two lifestyle factors, with accurate mechanisms explained (e.g. how saturated fat/salt affect the cardiovascular system), identifies at least one at-risk group, and gives relevant, correctly linked dietary/lifestyle advice to manage risk; accurate use of technical terminology throughout; clear, well-organised prose with few if any errors. Answers must refer to both dietary and lifestyle factors to access this level. Level 2 - Competent (5-8 marks): analyses a combination of dietary and lifestyle factors (though may be less developed or fewer in number), with some correct explanation of mechanism and/or some relevant advice or at-risk group identified; mostly accurate terminology; generally clear writing with some errors. Level 1 - Basic (1-4 marks): identifies one or two relevant dietary and/or lifestyle factors with little explanation of mechanism, advice or at-risk groups; writing may be list-like or contain errors that partially hinder meaning. 0 marks: no creditable response.