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All BECE candidates are to revise by solving these these 2024 BECE Integrated Science Questions.

After the questions, we have shared the suggested solutuon or marking schemes to help you.

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Attemp all the questions provided.

READ: Sample 2024 BECE Mathematics Questions and Answers

In doing that, consider the following:.

1. Explain your answers fully.
2. Support your answers with examples.
3. If the questions demands that you provide the diffrence features of two items, ensure that you use a table to answer the question.
4. In all instances ensure you show workings for mathematics questions.
5. Indicate units of measurement
6. Express your answers in simple English but use the right terms and science vocabulary to answer questions.

Solve These 2024 BECE Integrated Science Questions

PART II-60MARKS

a. i. Ken says a piece of iron is not magnetic material. Show by explanation that Ken is wrong.  [2marks]
ii. Ben says, magnetic stroking is the same magnetic induction. Prove that Ben is right or wrong [2marks]
b. Your teacher taught class that ions are; cation and anions. Your friend who was not in school that day want you to help him/her understand cation and anion. Help your friend to understand cation and anion.  [4marks]
c. Fred says, the study of prokaryotes and eukaryotes do not have any impact on human health. Show that, Fred is wrong [2marks]
d. The students in Dan JHS were provided with goats, sheep and Cassava cuttings to make an experimental farm.
(i) Explain the type of farming system that they should be considered  [1mark]
(ii) State two advantages of the farming system considered [2marks]
(iii) State two disadvantages of the farming system considered [2 marks]
a. (i) Yoyo says the efficiency of a machine can be expressed as ;  (work output)/(work input) . Do you agree or not?   Prove why you agree or disagree  [2marks]
(ii) Kai says; efficiency of a machine can be improved by oiling the metal parts of the machine. Explain the reason why Kai is right  [1mark]

b.  In an experiment, you are given the device below to demonstrate its characteristics.

Write your conclusion on the three facts obtained in your experiment [2marks]

Come out with the types of the above figure base on your experiment   [2marks]
c. (i) You were given oil and book. State two differences between oil and book

(ii)  Explain why differences exist between oil and water [2marks]
d. You are given poultry droppings, cow dung, left over foods, and waste from farm produce.
i.  Describe the plant nutrient you will be able to produce from the materials above [2marks]

ii. Explain how the other type of plant nutrient is produced [2marks]
a. (i) Bam says, thermal electricity is the same as nuclear electricity. Prove that, Bam is wrong. [3marks]
(ii) Write two negative effects of nuclear electricity [2marks]
b. You are given the table below to complete based on farm animals and their end products

2024 BECE Integrated Science Questions

Complete the table      [4marks]
c. (i) Pam is having scurvy. Explain to Pam how Scurvy is contracted  [2marks]
(ii) State two sign Scurvy       [2marks]
(d) State two effects of climate change [2marks]
5. a. You are given 3V battery made of two dry cells in series, a switch and an LED.
i. Which circuit can you build?   ……………………………………………………………….1mark
ii. Draw the circuit [3marks]
b. Ken says, gin can be obtained through evaporation. Show whether Ken correct or wrong by means of step-by-step explanation [3marks]

c. (i) Kofi says, sandy soil is sticky and holds more water than clayey soil. Explain the reason why kofi is correct or wrong  [2marks]
List two components of soil [2marks]
d. Explain why the life cycle of the grasshopper is described as incomplete metamorphosis as compared to complete metamorphosis in the housefly and mosquito [4marks]
6. a. In an attempt to describe nitrogen cycle, you are provided with some nitrogen depicting processes below. Explain each of the processes.
Nitrogen fixation  [1mark]
Nitrification [1mark]
Assimilation [1mark]
Ammonification [1mark]
De-nitrification. [1mark]
b.  Kwaku says, science, technology and innovation are the same thing. Do you agree with Kwaku? [3marks]
c.  (i) You are given an acid, and a base to run an experiment that will give you salt and water    Describe the process by which an acid and a base will give you salt and water.
(ii) Write a chemical equation for your experiment above.
d. (i) State two importance of nitrogen to the environment
(ii) Show two ways by which nitrogen can be interrupted

Solutions to the 2024 BECE Integrated Science Questions above

MARKING SCHEME
(a) (i) Blue black [ 2 marks, correct to score, correct spellings]
(ii) pale blue black [2 marks, correct and correct spellings to score]
(iii) maltose or reducing sugar [ 2 marks, correct and correct spellings]
(Correct spellings to score otherwise award zero)
(iv) a. Functions of saliva
b. makes the food softer for easier chewing and swallowing
c. Contains the enzyme ptyalin, which breaks down carbohydrates to reducing sugar
[Any 2 points, 2marks, 1 mark each, correct to score]
(v) To attain the normal body temperature, at which the enzyme in saliva can work efficiently
[Any point, 2 marks, correct to score]
b) (i) A—————NPN Transistor
B————–PNP Transistor ———————————correct to score 2marks
(ii) x——————collector
Y——————-base
Z——————–Emitter——————————————————-3marks, correct to score
(iii) the base pulls holes/positive charges from the emitter——————————1marks
(iv) silicon—————————————————————correct to score,……-2marks
(v) a. as a switch
b. As an amplifier
c. As a voltage regulator
d. As a rectification ——————————————–correct to score, 2marks
(c) (i) I …………..Beaker
II ……………conical flask
III……………….Tripod Stand
III……………….Bunsen Burner [4marks]
(ii) A……….filtration
B………..Evaporation/boiling [2marks, 1mark each]
(iii) Provide a source of heat [ 1 mark]
(iv) A………Mixture of water and sand/purification of water
B…….mixture of salt and water, mixture of sugar and water [1mark, ½ mark each]
(v) B……….sea salt is obtained through evaporation [1 mark]
(vi) Water [1mark]
(correct spellings to score, otherwise award zero)

(d) i.
A. Digging fork/garden fork
B. Spade
C. Hand fork
D. Garden trowel/hand trowel
E. Watering can 5marks, 1mark each
correct spellings to score, otherwise award zero)

ii.

5marks, 1mark each

 (note correct spelling to score, otherwise award zero mark)

SECTION II-ANY 4QUESTIONS 60MARKS
QUESTION 2
a. i. Ken is wrong because iron is indeed a magnetic material due to its ability to be attracted to magnets and to become magnetized when exposed to a magnetic field.
2marks, correct to score

ii. Ben is wrong. Magnetic stroking and magnetic induction are not the same. Magnetic stroking involves aligning the magnetic domains within a material by stroking it with a magnet, while magnetic induction is the process of inducing magnetism in a material by exposing it to a magnetic field.
2marks, correct to score

b. Cations are positively charged ions formed by losing electrons, while anions are negatively charged ions formed by gaining electrons.
4marks, correct to score

c. Fred is wrong. The study of prokaryotes and eukaryotes has significant impacts on human health, as these organisms can cause various diseases that affect humans.
Impact of Prokaryotes and Eukaryotes on Human Health:
1. Disease Pathogens
2. Gut Microbiota
3. Antibiotic Resistance
4. Biotechnology and Medicine
Any one above, 2marks
d.
(i) The type of farming system that should be considered is mixed farming.
Explanation of farming system, 1mark

(ii) Advantages of agroforestry:
1. Diversification of income sources
2. Enhanced soil fertility and structure
3. Conservation of biodiversity
4. Reduced soil erosion
5. Climate change mitigation
6. Improved resilience to climate variability
Any 2, 2marks, one each
(iii) Disadvantages of agroforestry:
1. Initial establishment costs and time
2. Competition for resources
3. Management complexities
4. Potential for pest and disease transmission
5. Limited access to sunlight
6. Constraints on mechanization
Any 2, points, 2marks

QUESTION 3
a.
(i) Yes, I agree. The efficiency of a machine can be expressed as the ratio of work output to work input. This is a common definition of efficiency, where efficiency measures how well a machine converts input energy into useful output energy.
2marks, any best explanations

(ii) Kai is right for several reasons:
1. Oiling reduces friction between moving parts, which decreases energy loss due to friction and increases efficiency.
2. It helps to prevent rust and corrosion of metal parts, prolonging the lifespan of the machine.
3. Reduced friction and wear lead to smoother operation, reducing the need for repairs and maintenance, thereby improving overall efficiency.
4. Oiling helps to maintain proper alignment of moving parts, preventing misalignment-related inefficiencies.
5. It can also help to dissipate heat generated during operation, preventing overheating and further improving efficiency.
Any one explanations, 1mark
b.
Conclusion on the three facts obtained in the experiment:
1. The magnet attracts certain metals like iron, nickel, and cobalt.
2. The magnet has two poles, north and south, which exhibit attraction towards opposite poles and repulsion towards like poles.
3. The strength of the magnetic field varies depending on the distance from the magnet.
Any 2, 2marks

ii. Types of the above figure based on the experiment:
The above figure is a permanent magnet and temporary magnet etc.
2marks

(i)

Any 2 points, 2marks
(ii) Differences between oil and water exist because of their molecular structures and chemical properties. The molecules of water is loose and that of book is parked closely.

2marks
d.
(i) The plant nutrient that can be produced from the materials provided (poultry droppings, cow dung, leftover foods, and waste from farm produce) is organic nutrients. These materials can be composted together to produce nutrient-rich organic matter that can be used to improve soil fertility and plant growth. 2marks

(ii) inorganic nutrients is produced chemically in a factory or laboratory

2marks

QUESTION 4
a.
(i) Bam is wrong. Thermal electricity and nuclear electricity are not the same. Thermal electricity is generated by using heat energy from burning fossil fuels, while nuclear electricity is generated by harnessing energy from nuclear reactions.
3 marks, differences

(ii) Negative effects of nuclear electricity:
1. Radioactive waste generation and disposal issues.
2. Risk of nuclear accidents leading to radiation leaks and environmental contamination.
3. Potential for nuclear proliferation and weapons development.
4. Health risks associated with radiation exposure for workers and nearby communities.
5. High initial construction costs and long-term decommissioning expenses.
6. Negative public perception and social stigma associated with nuclear power.
Any 2, 2marks

b.
Farm animals Meat Other product
Cattle Beef Milk etc,
Goat Mutton Milk etc.
Sheep Lamb Wool etc
Fowl Chicken Eggs etc 4marks

Solve These 2024 BECE Integrated Science Questions and Solutions continued.
c.
(i) Scurvy is contracted due to a deficiency of vitamin C in the diet. When the body lacks vitamin C, it cannot produce enough collagen, which is necessary for the formation of connective tissues. This leads to symptoms such as weakness, fatigue, and swollen gums.
2marks, correct to score

(ii) Signs of scurvy include:
1. Fatigue and weakness
2. Swollen and bleeding gums
3. Joint pain
4. Bruising easily
5. Dry, scaly skin
6. Delayed wound healing any 2, 2marks

d. Effects of climate change:
1. Rising temperatures leading to heatwaves and heat-related illnesses.
2. Changes in precipitation patterns, causing droughts and floods.
3. Sea level rise, leading to coastal erosion and inundation of low-lying areas.
4. Loss of biodiversity and habitat destruction due to shifts in ecosystems.
5. Increased frequency and intensity of extreme weather events.
6. Disruption of agriculture and food security due to changes in growing conditions.
Any 2, 2marks

QUESTION 5
a.
i. The circuit that can be built is a simple series circuit. 1mark

ii. [Drawing of the circuit] any meaningful diagram 3marks

b. Ken is wrong. Gin is not obtained through evaporation. Gin is a distilled alcoholic beverage made from juniper berries and other botanicals. It is produced through a process called distillation, where alcohol is extracted from fermented grains or fruits by heating and condensing the vapors. 3marks

c.
(i) Kofi is wrong. Sandy soil is not typically sticky and does not hold more water than clayey soil. Sandy soil has larger particles and drains water quickly, while clayey soil has smaller particles and retains water more effectively. 2marks

(iii) Components of soil:
– Minerals
– Organic matter
– Air
– Water
– Microorganisms
– Organic and inorganic materials any 2, 2marks

d. The life cycle of the grasshopper is described as incomplete metamorphosis because it goes through three stages: egg, nymph, and adult. In incomplete metamorphosis, the young nymphs resemble adults but are smaller and lack wings. They go through several molts before reaching adulthood. In contrast, the housefly and mosquito undergo complete metamorphosis, including egg, larva, pupa, and adult stages, with distinct differences in morphology between each stage. 4marks

QUESTION 6
a.
i. Nitrogen fixation: The process by which atmospheric nitrogen (N2) is converted into ammonia (NH3) or other nitrogen compounds that can be used by plants. 1 mark

ii. Nitrification: The process by which ammonia (NH3) or ammonium (NH4+) is converted into nitrites (NO2-) and then nitrates (NO3-) by nitrifying bacteria in the soil. 1mark

iii. Assimilation: The process by which plants and animals absorb nitrogen compounds from the soil or through consumption of other organisms and incorporate them into their own biomass. 1mark

iv. Ammonification: The process by which organic nitrogen compounds, such as proteins and nucleic acids, are decomposed by bacteria and fungi into ammonia (NH3) and ammonium ions (NH4+). 1mark

v. Denitrification: The process by which nitrates (NO3-) and nitrites (NO2-) are converted back into atmospheric nitrogen (N2) by denitrifying bacteria, completing the nitrogen cycle.
1mark

b. No, science, technology, and innovation are not the same things. Science is the systematic study of the natural world through observation and experimentation. Technology refers to the application of scientific knowledge for practical purposes. Innovation involves the creation or improvement of products, processes, or ideas to solve problems or meet needs. 3marks

c.
(i) When an acid reacts with a base, they undergo a neutralization reaction, producing a salt and water. The acid donates a proton (H+) to the base, forming water, and the remaining ions combine to form the salt. 3marks

(ii) Chemical equation:
HCl + N_a OH → N_a Cl + H_2 O 1mark

d.
(i) Importance of nitrogen to the environment:
1. Essential component of amino acids and proteins, necessary for the growth and development of organisms.
2. Critical nutrient for plant growth, influencing crop yields and agricultural productivity.
3. Facilitates nitrogen fixation by symbiotic bacteria, maintaining soil fertility.
4. Plays a role in the nitrogen cycle, regulating the availability of nitrogen in ecosystems.
5. Supports biodiversity by contributing to the structure and function of ecosystems.
6. Contributes to the balance of greenhouse gases in the atmosphere, influencing climate regulation. Any 2, 2marks

(ii) Ways nitrogen can be interrupted:
1. Excessive use of synthetic fertilizers, leading to nutrient runoff and water pollution.
2. Deforestation and habitat destruction, disrupting nitrogen cycling in ecosystems.
3. Industrial emissions and combustion processes releasing nitrogen oxides into the atmosphere.
4. Overfishing and nutrient depletion in aquatic ecosystems, affecting nitrogen availability.
5. Agricultural practices such as monoculture and tillage, altering nitrogen dynamics in soils.
6. Urbanization and land development, reducing natural nitrogen sinks and increasing nitrogen pollution. Any 2, 2marks

We hope these 2024 BECE Integrated Science Questions and Solutions wll help you revise