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Dietary protein is one of the essential nutrients that we must eat every day - Leaving Cert Home Economics - Question 1 - 2018
Question 1
Dietary protein is one of the essential nutrients that we must eat every day. The table below shows the ingredients and nutritional information (per 100 g), of a pr... show full transcript
Worked Solution & Example Answer:Dietary protein is one of the essential nutrients that we must eat every day - Leaving Cert Home Economics - Question 1 - 2018
Step 1
Using the information presented in the table above and having regard to current healthy eating guidelines, evaluate the nutritional value of the pre-prepared beef lasagne.
Answer
The pre-prepared beef lasagne provides several nutritional benefits but also has some drawbacks.
- Protein Content: With 6.8 g of protein per 100 g, it contributes to daily protein needs, essential for muscle repair and growth.
- Carbohydrates and Energy: It contains 12.6 g of carbohydrates, offering a source of quick energy, which is beneficial for those engaging in physical activities.
- Fats: The fat content is at 5.1 g, which includes unsaturated and potentially saturated fats. High saturated fat intake can lead to health issues like heart disease if consumed excessively.
- Fibre: The fibre content (0.5 g) is relatively low; hence, it may lack a significant impact on digestive health, suggesting the addition of more fibre-rich foods is advisable.
- Salt: Containing 0.5 g of salt, it should be monitored, especially for those with hypertension.
In summary, while the lasagne provides beneficial nutrients, it is essential to consume it in moderation and complement it with fresh fruits and vegetables to maintain a balanced diet.
Step 2
Suggest one suitable accompanimment that could be served with beef lasagne. Give a reason for your choice.
Answer
A green salad would be a suitable accompaniment.
Reason: A green salad is rich in vitamins, minerals, and dietary fibre, which can enhance the overall nutritional profile of the meal. It balances the richness of the lasagne and provides essential nutrients that may be lacking, promoting better digestion and overall health.
Step 3
classification
Answer
Proteins can be classified into two main categories:
- High Biological Value Proteins: These are usually animal-based proteins that provide all essential amino acids needed by the body. Examples include meat, fish, and dairy products.
- Low Biological Value Proteins: These proteins are generally plant-based and may lack one or more essential amino acids. Examples include legumes, nuts, and certain grains.
Step 4
Step 5
functions in the body.
Answer
Proteins serve several essential functions in the body:
- Growth and Repair: They are vital for the growth and repair of body tissues, including muscles and organs.
- Enzymatic and Hormonal Functions: Proteins act as enzymes facilitating biochemical reactions and hormones regulating bodily functions.
Step 6
Outline three effects of heat on protein foods.
Answer
The effects of heat on protein foods include:
- Coagulation: Proteins coagulate when heated, changing from a liquid to a solid state, which is essential in cooking processes (e.g., cooking eggs).
- Denaturation: Heat causes denaturation of proteins, altering their structure and making them more digestible by unfolding and losing their native configuration.
- Flavor Enhancement: The application of heat can improve flavor, as it promotes the Maillard reaction, enhancing the taste and aroma of protein foods.
Step 7
Discuss two advantages and two disadvantages of shopping online for groceries (food items).
Answer
Advantages of shopping online for groceries:
- Convenience: Online shopping allows consumers to shop at any time from the comfort of their homes, saving time and effort.
- Variety and Comparison: Consumers can easily compare prices and products from multiple retailers, ensuring they get the best deals.
Disadvantages of shopping online for groceries:
- Potential for Fraud: Online shopping can expose consumers to risks such as credit card fraud, especially on less secure websites.
- Delivery Issues: There may be complications with delivery, such as missed deliveries or products not being fresh upon arrival.