Subjects · Leaving Cert Home Economics
Leaving Cert Home Economics: Energy and metabolism
How often Energy and metabolism comes up on the Home Economics papers, every year it was asked, and questions to try.
HL Asked on 5 of the last 10 Higher Level papers, most recently in 2026.
OL Asked on 5 of the last 10 Ordinary Level papers, most recently in 2026.
Quick ones on Energy and metabolism.
- Grams and millilitres
- Kilocalories and kilojoules
- Watts and volts
- 0.42 kJ
- 42 kJ
- 4.2 kJ
- Basal metabolic rate
- Basic mineral requirement
- Body mass ratio
Show the answers
(a) Kilocalories and kilojoules
(b) 4.2 kJ
(c) Basal metabolic rate
Higher Level
Asked on 5 of the last 10 Higher Level papers, most recently in 2026.
Every paper, year by year
| Year | Where it came up |
|---|---|
| 2026 | A6 |
| 2025 | Not asked |
| 2024 | Not asked |
| 2023 | A4 |
| 2022 | Not asked |
| 2021 | A4 |
| 2019 | Not asked |
| 2018 | A4 |
| 2017 | Q1 |
| 2016 | Not asked |
Links open the State Examinations Commission’s paper for that year.
Ordinary Level
Asked on 5 of the last 10 Ordinary Level papers, most recently in 2026.
Every paper, year by year
| Year | Where it came up |
|---|---|
| 2026 | Q3 |
| 2025 | Not asked |
| 2024 | A3 |
| 2023 | A2 |
| 2022 | Not asked |
| 2021 | Not asked |
| 2019 | Q2 |
| 2018 | Not asked |
| 2017 | Not asked |
| 2016 | A4 |
Links open the State Examinations Commission’s paper for that year.
More Energy and metabolism questions
Energy and metabolism, 2 marks
Which unit is used to measure the energy in food?
- The litre
- The gram
- The kilocalorie
Show the answer
The kilocalorie
Energy is given in kilocalories, shown as kcal, and also in kilojoules, shown as kJ, on food labels.
Energy and metabolism, 3 marks
Which nutrient gives the most energy per gram?
- Carbohydrate
- Fat
- Protein
Show the answer
Fat
Fat gives about 9 kcal per gram, while carbohydrate and protein each give about 4 kcal per gram.
Energy and metabolism, 3 marks
About how much energy does 1 gram of fat supply?
- 9 kcal
- 4 kcal
- 1 kcal
Show the answer
9 kcal
This is why fried and fatty foods are so high in calories even when the portion looks small.
Other Home Economics topics
- Food microbiology
- Meal planning
- Textiles and fibres
- Food labelling
- Lipids
- The family
- Vitamins
- Carbohydrates
- Cereals
- Food preservation
- Food safety and hygiene
- Household budgeting
- Minerals
- Protein
- Special diets
- Fruit and vegetables
- Housing
- Insurance and saving
- Consumer protection
- Cooking methods
- Food additives
- Marriage and family law
- Meat and fish
- Milk and dairy
- Social change
- Community support services
- Consumer rights
- Dietary guidelines
- Eggs
- Energy in the home
- Food processing
- Household appliances
- Pastry, sauces and raising agents
- The environment
- Consumer research
- Family resource management
- Digestion and absorption
- Water
- Sensory analysis
- Food commodities