Get ready for the 2024 BECE by rivising with these 2024 BECE Integrated Science Super Questions Ans Answers To Watch. These are extracts from our final BECE Mock examination. Watch out for the practical section with answers soon.
2024 BECE Integrated Science Super Questions Ans Answers To Watch
SECTION B
[60marks]
Answer three questions only from this section.
(a) i) What is the difference between an atom and an element? [2marks]
ii) Why do elements in the same group have similar chemical properties? [2marks]
iii) Give two examples of noble gases. [1mark]
(b) i) Explain the term dentition. [2marks]
ii) Give one function each of the following parts of the mammalian tooth;
β) Crown
γ) Root [3marks]
(c) i) Explain the following types of seed beds to a basic 4 learner;
β) Sunken bed
γ) Raised bed [3marks]
ii) Name four examples of crops that can be planted on raised beds. [2marks]
(d) i) What are compound machines? [2marks]
ii) In what three ways can the functions of compound machines improve the quality of life? [3marks]
(a) i) Describe the nature of the following bodies in solar system to your 5 year old sister;
β) Asteriod
γ) Comet [3marks]
ii) Give two differences between comets and meteors [2marks]
(b) i) Give four examples of animal wastes that are used to prepare manure. [2marks]
ii) What is farmyard manure? [1marks]
iii) Name the two methods of preparing farmyard manure. [2marks]
(c) i) State two differences between colloids and suspension [2marks]
ii) Briefly describe how the following mixtures can be separated.
α ) Vinegar solution
β) Sugar – salt solution [3marks]
(d) Kofi is suffering from anaemia.
Use the above information to answer questions (d) i), ii) and iii)
What symptoms would be seen? [2marks]
What food nutrient is lacking in Kofi’s diet? [1mark]
Recommend a diet that can help Kofi recover from anaemia [2marks]
(a) i) Describe how the following viral diseases are transmitted;
α ) Ebola Virus Disease (EVD)
β) COVID-19 [3marks]
ii) Give four ways of preventing COVID-19 [2marks]
(b) Daniel shines a torchlight onto a mirror at an angle of 60° to the mirror. There is no object between him and the mirror.
Use the above information to answer questions (b) i), ii) and iii)
i) What would be the angle of reflection? [1mark]
ii) Briefly describe what will happen after the light ray incidents on the mirror. [2marks]
iii) Draw a diagram to represent the above information. [2marks]
(c) i) State three examples of organic acids and give one source each.[3marks]
ii) Give two properties of acids. [2marks]
(d) i) Tabulate three differences between mixed farming and mixed cropping. [3marks]
ii) State the reasons behind the practice of the following farming systems.
α ) Land rotation;
β) Organic Farming [3marks]
(a) i) In what three ways does thermal electricity generation affect the environment negatively? [3marks]
ii) Outline two ways of reducing the effect of thermal power generation on the environment. [2marks]
(b) i) Explain the following processes involved in nitrogen cycle
α ) Nitrification;
β) Denitrification. [4marks]
ii) State two importance of nitrogen cycle to the environment.
(c) State the functions of the following specialized cells in plants.
i) Guard cell
ii) xylem cell
iii) Epidermal cell
iv) Phloem cell [4marks]
(d) i) Briefly describe the following animal feeds;
α ) Concentrates;
β) Roughages [3marks]
ii) What will happen to animals who are not provided with adequate water? Give two points. [2marks]
2024 BECE Integrated Science Super Questions Ans Answers To Watch
SOLUTIONS TO ALL THE QUESTIONS
SECTION B
[60marks]
(a) i) What is the difference between an atom and an element? [2marks]
An atom is the smallest particles of an element that can take part in chemical reaction while an element is a chemical substance that is made up of the same kind of atom.
ii) Why do elements in the same group have similar chemical properties? [2marks]
This is because they have the same valence shell electronic configuration.
iii) Give two examples of noble gases. [1mark]
Helium
Neon
Argon
Krypton
Xenon
Radon
Oganesson
[0.5marks each for any two]
(b) i) Explain the term dentition. [2marks]
Dentition is the type, number and arrangement of a set of teeth in the buccal cavity of a mammal.
ii) Give one function each of the following parts of the mammalian tooth;
β) Crown
It protects the internal parts of the tooth
It protects the tooth from decay
It is used for biting and chewing
[1.5marks for any one]
γ) Root [3marks]
It supports and fasten the tooth into the jawbone
It firmly holds down the tooth
[1.5marks for any one]
(c) i) Explain the following types of seed beds;
β) Sunken bed
Sunken bed is a type of seedbed that is made below the surface area of the surrounding soil.
[1.5marks]
γ) Raised bed [3marks]
Raised bed is a type of seedbed that is prepared above the surface area of the surrounding soil.
[1.5marks]
ii) Name four examples of crops that can be planted on raised beds. [2marks]
Tomatoes
Onion
Pepper
Carrot
Cucumber
Cabbage
[0.5marks each for any four]
(d) i) What are compound machines? [2marks]
Compound machines are made up of two or more simple machines that work together to make work much easier.
ii) In what three ways can the functions of compound machines improve the quality of life? [3marks]
Increasing production
Making tough work simple
Compound machines save labour
They save time
They save human energy
They reduce the cost of production
[1mark each for any three]
(a) i) Describe the nature of the following bodies in solar system;
β) Asteriod
Asteroids are tiny, medium – sized or ultra – large pieces of rocks that orbit the sun.
[1.5marks]
γ) Comet [3marks]
Comets are formed of ice and gases mixed with dust and have an icy core surrounded by a huge, visible atmosphere of dust and gas that orbit the sun in an oval orbit with varying parameters.
[1.5marks]
ii) Give two differences between comets and meteors [2marks]
| Comets | Asteroid |
| Comets are formed too far away from the sun where their ice could not melt | Asteroids are formed close to the sun where ice could not remain solid |
| Comets form tails when they pass through the inner solar system. | Asteroids do not form tails |
| Comets predominantly orbit the sun in two regions: the Oort Cloud and the Kuiper Belt | Asteroids are usually found in the Asteroid belt |
| Asteroids do not necessarily orbit the sun in any uniform way | Asteroids orbit the sun in the same direction. |
(b) i) Give four examples of animal wastes that are used to prepare manure. [2marks]
Pig dung
Cow dung
Sheep dung
Poultry droppings
Carcasses
Urine
[0.5marks each for any four]
ii) What is farmyard manure? [1marks]
Farmyard manure includes solid and liquid excreta of livestocks, generally mixed with amount of straw, leaves, grasses, fodder or bedding materials.
iii) Name the two methods of preparing farmyard manure. [2marks]
Heap or surface method
Pit or sub – surface method
[1mark each]
(c) i) State two differences between colloids and suspension [2marks]
Colloids | Suspension |
| It is made up of smaller colloidal particles | It is made up of bigger suspended particles |
| It homogeneous | It is heterogeneous |
| Colloidal particles do not settle down when left undisturbed | Suspended particles settle down when left undisturbed |
| Colloidal particles can pass through filter paper | Suspended particles cannot pass through filter paper |
[1mark each for any two]
ii) Briefly describe how the following mixtures can be separated.
α ) Vinegar solution
They can be separated by differences in their boiling point using distillation method. The boiling point of vinegar is 118°C while that of water is 100°C. As a result, water will be the first distillste to come out because it has a lower boiling point.
[1.5marks]
β) Sugar – salt solution
Dissolve sugar in alcohol, separate the liquid away from the salt, and evaporate the alcohol and to recover the sugar
[1.5 marks]
(d) Kofi is suffering from anaemia.
Use the above information to answer questions (d) i), ii) and iii)
What symptoms would be seen? [2mark]
Fatigue, headache, pale skin and sore tongue
What food nutrient is lacking in Kofi’s diet? [1marks]
Lack of iron
Recommend a diet that can help Kofi recover from anaemia [2marks]
Kofi must eat protein foods and green leafy vegetables with citrus fruits like orange.
(a) i) Describe how the following viral diseases are transmitted;
α ) Ebola Virus Disease (EVD)
Ebola Virus Disease (EVD) is transmitted through direct contact with an infected animal (bat or non-human primate), a sick or dead person that has been infected with the Ebola Virus.
[1.5marks]
β) COVID-19
COVID-19 is transmitted through direct contact with respirstory droplets of an infected person and touching surfaces contaminated with the virus.
[1.5marks]
ii) Give four ways of preventing COVID-19 [2marks]
Regular hand washing with disinfectants
Maintain a safe distance (at least 1 metre) from others even if they do not appear to be sick
Wear a nose mask in public places
Choose open, well – ventilated places over closed ones
Use alcohol hand gel to rub your hands regularly
Cover your nose and mouth with your bent elbow or a tissue when you cough or sneeze
Get vaccinated when asked to do so by the Government
Follow local government guidance about vaccination
Stay home if you feel unwell
[0.5marks each for any four]
(b) Daniel shines a torchlight onto a mirror at an angle of 60° to the mirror. There is no object between him and the mirror.
Use the above information to answer questions (b) i), ii) and iii)
i) What would be the angle of reflection? [1mark]
30 degrees
ii) Briefly describe what will happen after the light ray incidents on the mirror. [2marks]
When the light ray incidents on the mirror, it will turn or bounces back into the original medium.
iii) Draw a diagram to represent the above information. [2marks]
READ: All 2024 WASSCE Topics Projected for all Programmes
2024 BECE Integrated Science Super Questions Ans Answers To Watch
(c) i) State three examples of organic acids and give one source each. [3marks]
| Organic acid | Sources |
| § Lactic acid | Breast milk, sour milk |
| § Citric acid | Orange, lemon. Pineapple, lime |
| § Palmitic acid | Palm oil |
| § Tartaric acid | Graper |
| § Tannic acid | Tea |
| § Ethanoic acid | Vinegar, beer, sour, palm wine |
| § Methanoic acid | Ants, bees |
| § Ascorbic acid | Green vegetables and fresh fruits |
| § Malic acid | Apples, banana, beans, pear |
[1mark each for any three]
- ii) Give two properties of acids. [2marks]
- Acids generally have a sour taste
- Strong or concentrated acids are corrosive
- Acids have a PH less than 7
- Acids change the colour of PH
- Strong and concentrated acids conduct electricity
- Acids react with ammonia to produce ammonium salt
- Acids react with metals to produce salt and hydrogen except HNO3 which reacts with metals to produce oxides of nitrogen but not hydrogen gas.
- Acids react with bases to produce salt and water.
[1mark each for any two]
(d) i) Tabulate three differences between mixed farming and mixed cropping. [3marks]
| Mixed farming | Mixed cropping |
| Both crops and animals are raised on the farm | Only crops are cultivated |
| Dungs and droppings are available for plant use | No dungs and droppings available |
| Animals stray to graze on the farm crops | No animals to destroy crops |
| It requires large land | Small piece of land is sufficient for this system |
| It requires relatively huge capital | Relatively small capital needed |
READ: Solve These 2024 BECE Integrated Science Questions
[1mark each for any three]
ii) State the reasons behind the practice of the following farming systems.
α ) Land rotation;
To allow land to regain its fertility and control pest, diseases and soil erosion
[1mark]
β) Organic Farming
To use natural means to produce food without destroying the environment.
[1mark]
(a) i) In what three ways does thermal electricity generation affect the environment negatively? [3marks]
Burning of fossil fuel pollutes the air
It release soot and ashes into the environment causing respiratory problems
Mining of fossil fuels causes water pollution
[1mark each]
ii) Outline two ways of reducing the effect of thermal power generation on the environment. [2marks]
Use electricity more efficiently
Construct efficient thermal plant
Use electricity generation plants that use renewable primary sources of energy as fuel.
[1mark each for any two]
(b) i) Explain the following processes involved in nitrogen cycle
α ) Nitrification;
Nitrification involves the conversion of ammonia into nitrate by the presence of bacteria in the soil.
[2marks]
β) Denitrification.
Denitrification is the process in which the nitrogen compounds makes their way back into the atmosphere by converting nitrate (NO3) into gaseous nitrogen (N2 (gas))
[2marks]
READ: 2024 BECE Integrated Science Questions (NACCA and WAEC Format)
ii) State two importance of nitrogen cycle to the environment.
It helps plants to synthetize chlorophyll from the nitrogen compounds
It helps in coverting inert nitrogen gas into a usable form for the plants through the biochemical process.
Nitrates and nitrites are released into the soil, which help in enriching the soil with the necessary nutrients required for cultivation.
[1mark each for any two]
(c) State the functions of the following specialized cells in plants.
i) Guard cell
It allows for the uptake of carbon dioxide
[1mark]
ii) xylem cell
It transports soluble mineral nutrients and water molecules from the roots to the aerial parts of the plant.
[1mark]
iii) Epidermal cell
It protect the plant from a variety of harmful factors.
[1mark]
iv) Phloem cell
It transports food and other nutrients including sugar and amino acids from leaves to the storage organs and growing parts of the plant.
[1mark]
(d) i) Briefly describe the following animal feeds;
α ) Concentrates;
This is feed contains protein, carbohydrates, minerals and fibre which supplies the animals adequate nutrients for proper functioning, development and growth.
[1.5marks]
β) Roughages
This type feed contains higly fibre content which provides vitamins, minerals and other nutrients for farm animals.
[1.5marks]
ii) What will happen to animals who are not provided with adequate water? Give two points. [2marks]
Animals that are not provided with adequate water will;
Suffer stress
Be dehydrated
Have tightening of the skin
Have lost of weight
Have dried mucous membranes and eyes
[1mark each for any two]
READ: 2024 BECE Integrated Science Questions (NACCA and WAEC Format)
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