VCAA Food Studies The science of food
15 sample questions with marking guides and sample answers · Avg. score: 64.5%
'Taking pleasure in food is not just about cooking – it's about thinking, "I've got myself something delicious".'
Source: Nigella Lawson in Hadley Freeman, 'Nigella Lawson: "I didn't think I'd be a mended person, but I am"', The Guardian, 10 October 2020, <www.theguardian.com>
This quote refers to
an ethical role of food.
an emotional role of food.
an environmental role of food.
a physiological role of food.
Reveal Answer
an ethical role of food.
Incorrect. The quote does not mention moral choices, animal welfare, or fair trade, which are associated with the ethical role of food.
an emotional role of food.
Correct. The quote highlights "taking pleasure" and the psychological satisfaction of eating, which directly relates to the emotional role of food.
an environmental role of food.
Incorrect. The quote does not discuss sustainability, food miles, or ecological impact, which relate to the environmental role of food.
a physiological role of food.
Incorrect. The quote focuses on pleasure and feelings rather than bodily needs, nutrition, or physical hunger, which are aspects of the physiological role of food.
What is the primary site for the absorption of nutrients in the gastrointestinal tract?
stomach
oesophagus
small intestines
large intestines
Reveal Answer
stomach
Incorrect. While the stomach plays a major role in mechanical and chemical digestion, it only absorbs a few substances like water and alcohol, not the majority of nutrients.
oesophagus
Incorrect. The oesophagus is a muscular tube responsible for transporting food from the mouth to the stomach via peristalsis, and no nutrient absorption occurs here.
small intestines
Correct. The small intestine is the primary site of nutrient absorption, featuring a highly folded inner surface with villi and microvilli that maximize the surface area for this process.
large intestines
Incorrect. The large intestine is primarily responsible for absorbing water, electrolytes, and some vitamins from indigestible food matter, rather than primary nutrients.
A new bread brand includes wholegrains as well as resistant starch, which functions as a prebiotic that improves digestive health.
Resistant starch improves digestive health because it
is fermented by bacteria in the large intestine.
provides beneficial bacteria that our bodies absorb.
promotes satiety.
nourishes the cells that line the small intestine.
Reveal Answer
is fermented by bacteria in the large intestine.
Resistant starch resists digestion in the small intestine and reaches the large intestine, where it is fermented by beneficial bacteria, acting as a prebiotic.
provides beneficial bacteria that our bodies absorb.
Prebiotics provide food for existing gut bacteria, whereas probiotics contain the actual beneficial bacteria. Additionally, bacteria are not absorbed into the body.
promotes satiety.
Although resistant starch can promote a feeling of fullness (satiety), this is not the mechanism by which it functions as a prebiotic to improve digestive health.
nourishes the cells that line the small intestine.
Resistant starch is not digested in the small intestine; instead, its fermentation products (like short-chain fatty acids) nourish the cells lining the large intestine.
Which of the following is a key principle of a credible source in scientific research?
The source is published by a popular media outlet.
The source provides peer-reviewed information.
The source includes anecdotal evidence and personal opinions.
The source is authored by someone with a strong social media presence.
Reveal Answer
The source is published by a popular media outlet.
Incorrect. Popular media outlets often prioritize engagement over scientific accuracy and do not typically subject articles to rigorous scientific review.
The source provides peer-reviewed information.
Correct. Peer review is a cornerstone of scientific credibility, ensuring that research is evaluated by independent experts for validity and accuracy before publication.
The source includes anecdotal evidence and personal opinions.
Incorrect. Scientific credibility relies on empirical data and objective analysis, whereas anecdotal evidence and personal opinions are subjective and prone to bias.
The source is authored by someone with a strong social media presence.
Incorrect. A strong social media presence indicates popularity, not scientific expertise or the use of rigorous research methodologies.
Which one of the following statements aligns with recommendations from the Australian Dietary Guidelines (part of the 'Eat for Health' program) to assist in the prevention of obesity and related lifestyle diseases?
A vegan diet is the only diet that will prevent obesity.
Enjoy a variety of nutritious foods from each of the five food groups.
All foods containing saturated fat, added salt and added sugars should be removed from the diet.
A high-protein, low-carbohydrate diet should be encouraged for children in order to establish healthy eating habits.
Reveal Answer
A vegan diet is the only diet that will prevent obesity.
The Australian Dietary Guidelines do not mandate a vegan diet; they recommend a balanced diet that can include both plant and animal products to maintain a healthy weight.
Enjoy a variety of nutritious foods from each of the five food groups.
This directly reflects Guideline 2 of the Australian Dietary Guidelines, which promotes consuming a diverse range of foods from the five core food groups for optimal health and disease prevention.
All foods containing saturated fat, added salt and added sugars should be removed from the diet.
Guideline 3 recommends limiting the intake of foods containing saturated fat, added salt, and added sugars, rather than completely eliminating them from the diet.
A high-protein, low-carbohydrate diet should be encouraged for children in order to establish healthy eating habits.
The guidelines do not recommend restrictive diets like high-protein, low-carbohydrate for children; instead, they emphasize a balanced intake of all macronutrients, including carbohydrates from whole grains.
The following table lists the number of serves of grain (cereal) foods – preferably wholegrain – required by adults in various life stages.
| Age/Stage | Number of serves |
|---|---|
| 19–50 years | 6 |
| 51–70 years | 4 |
| 70+ years | 3 |
| pregnancy | 8.5 |
Source: Adapted from 'Recommended number of serves for adults', Australian Dietary Guidelines, <www.eatforhealth.gov.au>
Describe one reason why a pregnant woman needs more serves of grain (cereal) foods than a 19- to 50-year-old woman.
Reveal Answer
| Descriptor | Marks |
|---|---|
Identifies a valid reason or relevant nutrient required in higher amounts during pregnancy (e.g., additional energy/carbohydrates, fibre, protein, folate, iron). | 1 |
Describes how this reason or nutrient supports the pregnant woman or foetus (e.g., managing constipation, growth of maternal/foetal tissue, reducing neural tube defects, supporting increased blood volume). | 1 |
Using the nutritional rationale of the 'Australian Guide to Healthy Eating', discuss the ways in which grain (cereal) foods can optimise health.
Reveal Answer
| Descriptor | Marks |
|---|---|
Comprehensively discusses how grain (cereal) foods optimise health, explicitly applying the nutritional rationale of the AGTHE. Clearly identifies relevant nutrients and provides detailed links to health outcomes (e.g., improving gut health, reducing lifestyle diseases). | 4 |
Discusses how grain (cereal) foods optimise health, with some application of the nutritional rationale of the AGTHE. Identifies relevant nutrients and outlines links to health outcomes. | 3 |
Outlines how grain (cereal) foods optimise health. Identifies relevant nutrients and basic health links, but application of the AGTHE nutritional rationale is limited or absent. | 2 |
Identifies a relevant nutrient provided by grain (cereal) foods or states a basic health benefit, with no meaningful discussion or link to the AGTHE. | 1 |
No valid response. | 0 |
Outline one way an individual can manage their allergy to wheat.
Reveal Answer
| Descriptor | Marks |
|---|---|
Identifies one valid strategy to manage a wheat allergy (e.g., reading food labels, avoiding cross-contamination, replacing wheat products). | 1 |
Clearly outlines how the strategy is implemented to help manage the allergy (e.g., looking for allergen warnings, preparing wheat-free foods separately, using rice flour instead). | 1 |
Which of the following statements best describes the physiological response in individuals with gluten intolerance?
An allergic reaction triggers anaphylaxis.
A digestive reaction causes inflammation of the gastrointestinal tract.
An immune reaction causes damage to the gastrointestinal tract.
An enzymatic reaction results in cramps and diarrhoea.
Reveal Answer
An allergic reaction triggers anaphylaxis.
Gluten intolerance is not an IgE-mediated allergy and does not cause anaphylaxis, which is a severe, life-threatening allergic reaction.
A digestive reaction causes inflammation of the gastrointestinal tract.
Gluten intolerance (non-celiac gluten sensitivity) involves a digestive reaction that leads to inflammation and gastrointestinal symptoms, without the autoimmune damage seen in celiac disease.
An immune reaction causes damage to the gastrointestinal tract.
An immune reaction causing damage to the gastrointestinal tract specifically describes celiac disease, an autoimmune disorder, rather than general gluten intolerance.
An enzymatic reaction results in cramps and diarrhoea.
An enzymatic reaction causing cramps and diarrhea describes lactose intolerance (due to a lack of the enzyme lactase), not gluten intolerance.
Which of the following statements best describes the sensory appreciation of food?
the predisposition to dislike particular flavours
the regulation of portion size due to hunger cues
the regulation of foods that are high in sugar
the ability to recognise different textures of food
Reveal Answer
the predisposition to dislike particular flavours
This describes a food aversion or flavor dislike, rather than the overall sensory appreciation and evaluation of food.
the regulation of portion size due to hunger cues
This refers to physiological hunger and satiety cues, which regulate food intake rather than the sensory experience of eating.
the regulation of foods that are high in sugar
This relates to dietary choices or the physiological regulation of sugar intake, not the sensory evaluation of food.
the ability to recognise different textures of food
Sensory appreciation involves using the senses to evaluate and experience food, which includes recognizing different textures, flavors, and aromas.
Our digestive system contains millions of microorganisms. In a healthy person, most microorganisms in the digestive system have a useful purpose. The mouth, stomach and upper section of the small intestine contain fewer microorganisms than the lower section of the small intestine and the large intestine, which contain trillions of microorganisms.
Explain one role that microorganisms in the small intestine play in the digestive system in facilitating the health of an individual.
Reveal Answer
One role microorganisms play is destroying or neutralising pathogens and other 'bad bacteria' to help reduce the risk of an individual becoming sick or otherwise in ill health. The millions of microorganisms that live in the small intestine work together to combat pathogens that entre the body, identifying things such as bacteria, and destroying them via processes such as phagocytosis. When microorganisms are depleted, pathogens may enter the body and not be destroyed or neutralised and cause an individual to become ill. A healthy small intestine microbiome is important in preventing sickness.
| Descriptor | Marks |
|---|---|
Identifies a valid role of microorganisms in the small intestine (e.g., protecting against pathogenic bacteria, digesting lactose) | 1 |
Explains the mechanism of this role (e.g., feeding off fibre to destroy harmful bacteria, breaking down lactose into monosaccharides) | 1 |
Links the role to facilitating the health of the individual (e.g., supporting immune health, preventing diarrhoea) | 1 |
Describe the role of enzymatic hydrolysis in digestion.
Reveal Answer
Enzymatic hydrolysis involves enzymes breaking down the molecular building blocks of foods so that they can then be absorbed and utilised by the body, for example, enzymes breaking down proteins into amino acids.
| Descriptor | Marks |
|---|---|
Identifies that enzymatic hydrolysis involves enzymes breaking down the molecular bonds of macronutrients or foods | 1 |
Explains the purpose or mechanism of this process (e.g., making nutrients small enough for absorption, or breaking bonds with the addition of water) | 1 |
How does gut microbiota influence physical health?
It increases the ability to handle stress.
It enhances mental clarity and focus.
It regulates the immune system.
It produces chemicals that help regulate mood in the brain.
Reveal Answer
It increases the ability to handle stress.
Incorrect. While the gut-brain axis plays a role in stress, handling stress is primarily a psychological function rather than a direct physical health mechanism.
It enhances mental clarity and focus.
Incorrect. Mental clarity and focus are cognitive functions, so this describes an influence on mental rather than physical health.
It regulates the immune system.
Correct. The gut microbiota directly impacts physical health by interacting with immune cells, helping to regulate immune responses and protect against pathogens.
It produces chemicals that help regulate mood in the brain.
Incorrect. Although the gut produces neurotransmitters like serotonin, regulating mood is an aspect of mental health, not physical health.
The Australian Dietary Guidelines and the 'Australian Guide to Healthy Eating' (both part of the 'Eat for Health' program) are credible sources of information because they
were published in 2013 by Nutrition Australia.
promote good nutrition and health.
contain reviews of information from nutrition experts and food-based social media influencers.
contain evidence from randomised controlled trials and systematic literature reviews.
Reveal Answer
were published in 2013 by Nutrition Australia.
This is incorrect because the guidelines were developed by the National Health and Medical Research Council (NHMRC), not Nutrition Australia.
promote good nutrition and health.
While promoting health is their goal, their credibility stems from the rigorous scientific evidence they are based on, not just their purpose.
contain reviews of information from nutrition experts and food-based social media influencers.
Credible national guidelines rely on rigorous scientific research and expert consensus, not information from social media influencers.
contain evidence from randomised controlled trials and systematic literature reviews.
The guidelines are considered highly credible because they are based on rigorous scientific evidence, including systematic literature reviews and randomised controlled trials.
Recommended daily number of serves of lean meat and poultry, fish, eggs, tofu, nuts and seeds, and legumes/beans
| Age range | Recommended number of serves |
|---|---|
| 4–8 years old | 1 |
| 14–18 years old | 2 |
Explain why a four-year-old child requires a different number of serves of the 'lean meat and poultry, fish, eggs, tofu, nuts and seeds, and legumes/beans' food group than a 16-year-old adolescent does.
Reveal Answer
Possible responses included:
- Protein is required in higher amounts for people in a stage of rapid growth and development. For example, during puberty, adolescents (such as the 16 year old) require 2.5 serves, while four-year-old children require 1.5 serves. This is because the children are in a slow and steady growth period and do not require as much protein.
- Due to their ages, their body structure also differs. As adolescents have a bigger body structure, they require one serve more of the 'lean meat and poultry, fish, eggs, tofu, nuts and seeds, and legumes/beans' food group than children to meet their requirements for extra growth and muscle/bone mass. This food group is a good source of protein required for growth.
| Descriptor | Marks |
|---|---|
Identifies a reason for the difference in recommended serves between the two age groups (e.g., muscle mass, rate of growth, age, or activity levels). | 1 |
Explains the relevance of protein from the listed food group to the identified factor (e.g., protein is required for growth and development). | 1 |
Explains why more serves are recommended for adolescents or fewer for children based on the identified factor (e.g., adolescents are in a stage of rapid growth requiring more protein, whereas four-year-olds are in a slow and steady growth period). | 1 |
Using the nutritional rationale of the 'Australian Guide to Healthy Eating' (part of the 'Eat for Health' program), explain why nuts are grouped with the 'lean meat and poultry, fish, eggs, tofu, nuts and seeds, and legumes/beans' food group.
Reveal Answer
Examples of the nutritional rationale for the 'Australian Guide to Healthy Eating' grouping 'nuts' together with 'lean meats and poultry, fish, eggs, tofu, nuts and seeds, and legumes/beans' food group:
- The 'Australian Guide to Healthy Eating' promotes a wide variety of foods within each food group, such as nuts and lean meats, to help ensure a variety of nutrients is included in the diet to protect against a range of diseases.
- Nuts belong to the same food group as lean meats as they contain similar nutrients such as protein, but they also provide other nutrients. By selecting a variety of foods from this food group, people are more likely to obtain adequate quantities of all nutrients found in this food group.
- Nuts are a source of unsaturated fatty acids, so are grouped with other foods such as seeds, tofu, lean meats and fish, which are also a source of these fatty acids.
- Nuts provide an alternative source of protein and iron for those who choose not to eat meat, such as vegetarians or people who do not eat meat for religious and cultural reasons, allowing them to meet their daily protein requirements.
- As nuts have a more concentrated kilojoule content, their serving size is smaller compared to other foods from this group, such as legumes, which are less energy-dense.
| Descriptor | Marks |
|---|---|
Identifies relevant nutrient(s) found in nuts and the food group (e.g., protein and/or unsaturated fatty acids). | 1 |
Explains that foods are grouped together based on their similar nutrient contribution. | 1 |
Explains the nutritional rationale of the 'Australian Guide to Healthy Eating' for this grouping (e.g., ensuring a variety of nutrients to protect against disease, providing alternative sources for vegetarians, or accounting for energy density). | 1 |
An individual could address a food allergy by
making food swaps.
regularly eating restaurant food.
not reading food labels.
always using organic ingredients when cooking.
Reveal Answer
making food swaps.
Making food swaps allows an individual to replace ingredients that trigger their allergy with safe alternatives while still enjoying similar meals.
regularly eating restaurant food.
Regularly eating at restaurants actually increases the risk of accidental allergen exposure due to cross-contamination and hidden ingredients.
not reading food labels.
Reading food labels is a critical step in managing a food allergy to ensure allergens are not hidden in processed foods.
always using organic ingredients when cooking.
Organic ingredients can still contain allergens, as the term organic only refers to how the food was grown, not its allergen content.
Which of the following is a practical option that aligns with the Australian Dietary Guidelines when preparing food?
Do not shop when you are hungry.
Grill and deep-fry foods but avoid creamy sauces.
Use pastry to make vegetarian pies.
Use foods that include fruit, vegetables and wholegrains when making a smoothie.
Reveal Answer
Do not shop when you are hungry.
While this is a helpful strategy for making healthier choices, it is a shopping tip rather than a practical option for preparing food.
Grill and deep-fry foods but avoid creamy sauces.
Deep-frying foods adds significant amounts of saturated fat, which the Australian Dietary Guidelines explicitly recommend limiting.
Use pastry to make vegetarian pies.
Pastry is typically high in saturated fat and kilojoules, contradicting the guidelines' recommendation to limit foods containing saturated fat.
Use foods that include fruit, vegetables and wholegrains when making a smoothie.
This option directly aligns with the guidelines' recommendation to enjoy a wide variety of nutritious foods from the core food groups, including fruits, vegetables, and wholegrains.
Which of the following statements is best explained by the process of conditioning of appetite?
A person likes the taste of coffee.
A person feels very hungry when they wake up in the morning.
A person feels very thirsty when they wake up in the morning.
A person feels they need a cup of coffee when they sit down for their regular morning break.
Reveal Answer
A person likes the taste of coffee.
Liking the taste of coffee is a sensory preference, not a conditioned response triggered by an environmental cue.
A person feels very hungry when they wake up in the morning.
Feeling hungry upon waking is primarily a physiological response to fasting overnight, rather than a conditioned appetite.
A person feels very thirsty when they wake up in the morning.
Morning thirst is a physiological response to overnight dehydration, not a conditioned appetite.
A person feels they need a cup of coffee when they sit down for their regular morning break.
This illustrates classical conditioning, where an environmental cue (the regular morning break) becomes associated with and triggers a craving for coffee.