Basic Science

Len Academy Examination Questions for Basic Science, JSS3, 2nd Term

len Alfred Ajibola - Tue, 26th May, 2020 @ 06:33: AM

Topics in Basic Science

Importance of immunization Types of Carbohydrates: Monosaccharides and Polysaccharides Carbohydrates: Disaccharides and Oligosaccharides Len Academy Examination Questions for Basic Science, JSS2, 2nd Term Len Academy Examination Questions for Basic Science, JSS3, 3rd Term Len Academy Examination Questions for Basic Science, JSS3, 2nd Term Primates: Characteristics of Primates Effects of improper waste management Waste Management: Causes of waste in the society Concept of mass and weight Mineral Salts: Sources, functions and deficiencies of macronutrients Sources, functions and deficiencies of micronutrients Len Academy questions for Basic Science JSS1, second Term Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Micro organisms causing food, water and air borne diseases Vector borne organisms and the diseases they cause Bones of the Human Skeleton Meaning of Drugs, Type of Drugs and Side effects of Drugs What is immunization? How immunization works and the processes involved Food: What is food?

Academic Questions in Basic Science

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Vaccination involves a process of introducing pathogens or germs into a person in order to prevent such person from the diseases they cause.

  • A. True

  • B. False

With regards to the human health, foreign bodies are best regarded as _____.

  • A. International bodies

  • B. Antilators

  • C. Antibodies

  • D. Antigens

  • E. Antibiotics

  • F. Antidotes

Disease causing organisms are termed _____.

  • A. Pests

  • B. Pathogens

  • C. Vectors

  • D. Insects

  • E. Disease carriers

  • F. All the above options are correct

____ is formed from a reaction utilizing oxygen and glucose in the mitochondria of cells.

  • A. Galactose

  • B. Fructose

  • C. Sucrose

  • D. AMP

  • E. ADP

  • F. ATP

Which of the following statement is false concerning carbohydrates?

  • A. They are composed of carbon, hydrogen and oxygen only

  • B. Carbon has the highest ratio of the constituent elements of carbohydrates

  • C. All carbohydrates are sugars

  • D. Fructose is a carbohydrate

  • E. Natural milk contains lactose and it's a carbohydrate

  • F. Fatty foods contains high calories of energy when compared to the same quantity of carbohydrate foods

Which of the following is a class of food?

  • A. Water

  • B. Fibre

  • C. Roughages

  • D. Latex

  • E. Tanins

  • F. Wax

Brachiation is a specialized form of movement exhibited by _____.

  • A. Human beings

  • B. Babbons

  • C. Chameleons

  • D. Toads

  • E. Millipedes

  • F. Birds

_____ is a form of locomotion whereby an organism move by means of its two hind limbs.

  • A. Pedalism

  • B. Duo Pedalism

  • C. Double Pedalism

  • D. Dual Pedalism

  • E. Bipedalism

  • F. Copedalism

Basic Science Questions, JSS3, Second Term:

1. _____ is a branch of a science that deals with the study of life.

  1. Biology
  2. Chemistry
  3. Physics
  4. Geography
  5. Please read this article here for correct Answer.


2. Objectives of drug usage includes the following EXCEPT _____.

  1. To combat diseases
  2. To provide energy
  3. To relieve suffering
  4. To save life
  5. Please read on the meaning of Drug, Types and Side Effects of Drugs here.


3. An element with a valency of +4 is _____.

  1. Potassium
  2. Calcium
  3. Carbon
  4. Nitrogen
  5. Please read on Periodic Table and Classification of Elements here.


4. _____ is formed when an acid is dissolved in water.

  1. H2O+
  2. OH-
  3. H3O+
  4. H2O-
  5. Please read on the Definitions of an Acid here.


5. Which of the following elements is NOT a noble gas?

  1. He
  2. Ne
  3. Be
  4. Ar


6. A damp _____ litmus paper turns _____ in NaOH.

  1. Red, Blue
  2. Blue, Red
  3. Blue, Colourless
  4. Red, Neutral
  5. You can read on the Physical and Chemical Properties of Acids here.


7. The S.I unit for electric current is the _____.

  1. Volt
  2. Ohm
  3. Ampere
  4. Watt
  5. Please read on the Fundamental Quantities and Units in Physics here.


8. The image formed in the pin-hole camera is _____.

  1. Reflected
  2. Refracted
  3. Inverted
  4. Upright


9. A chemical change will not include _____.

  1. Rotting of leaves
  2. Melting of Candle wax
  3. Corrosion of iron
  4. Burning of wood
  5. Please read on Physical and Chemical Changes here.


10. A ball with a mass of 20g rolls from a height of 8m. Calculate its kinetic energy when it has a velocity of 2ms-1.

  1. 1.6J
  2. 0.12J
  3. 0.6J
  4. 0.4J
  5. Please read on the concepts of Velocity and Acceleration here.


11. The valency of 'N' in NaNO3 is _____.

  1. -1
  2. +1
  3. -5
  4. +5

You can attempt Len Academy Questions on various Subjects (with Answers) here.

12. Myopia can be corrected with glasses that have _____ lenses.

  1. Concave
  2. Convex
  3. Irregular
  4. Regular


13. The vector of river blindness is _____.

  1. Mosquito
  2. Plasmodium
  3. Blackfly
  4. Tsetse fly
  5. Please read on Vector of Diseases, Vector Borne Organisms and the Diseases they cause here.


14. _____ atoms are present in H2SO4.

  1. 3
  2. 5
  3. 7
  4. 9
  5. Please read the concept of Molar Mass with some worked examples here.


15. The spontaneous emission of particles or rays as seen in the nucleus of certain atoms is termed _____.

  1. Nuclear Fission
  2. Nuclear Fusion
  3. Radioactivity
  4. Gamma


16. Components of Information and Communication Technology (ICT) will NOT include _____.

  1. Post Office
  2. Electronic Mail
  3. Television
  4. Internet
  5. You can read on the Internet of Things (IoT) here.


17. Certain plants are able to survive in water because _____.

  1. Their shoots are well developed
  2. They have flowers
  3. Their leaves have air spaces
  4. Their cuticle are well developed
  5. You can read on the Differences between Plants and Crops here.


18. A hormone that increases the body's metabolic function is _____.

  1. Thyroxine
  2. Aldosterone
  3. Testosterone
  4. Progesterone
  5. Please read on Homeostasis and Negative Feedback Mechanism here.


19. Rods and Cones of the eyes are concentrated in the _____.

  1. Sclera
  2. Fovea Centralis
  3. Blind Spot
  4. Cornea


20. The final bending adjustment of light into the retina is done by the _____.

  1. Lens
  2. Iris
  3. Pupil
  4. Cornea

Please read on what every Student is expected to know here.

21. A bone found in the middle ear is the _____.

  1. Stapedius
  2. Incus
  3. Patella
  4. Scaphoid
  5. Please read on all the Bones of the Human Skeleton explained with diagrams here.


22. The function of chlorine in the water purification process is to _____.

  1. Filter the water
  2. Kill micro-organisms
  3. Improve its taste
  4. Make it colourless


23. The vitamin obtained from the sun functions to _____.

  1. Prevent hypermetropia
  2. Build our skin
  3. Build our bones
  4. Prevent Myopia
  5. You can read on the Sources, Functions and Deficiencies of Macronutrients here.


24. Desertification is likely to occur in which Nigerian State?

  1. Gombe
  2. Rivers
  3. Imo
  4. Ogun
  5. Please read on the Desert Biome here.


25. The ozone layer of the atmosphere is composed of _____.

  1. O
  2. O2
  3. O3
  4. O4
  5. Please read on the Layers of the Atmosphere here.


26. The following activities of man will cause flooding EXCEPT

  1. Deforestation
  2. Availability of drainage facilities
  3. Poor farming practices
  4. None of the above
  5. You can read on Soil Erosion and Types of Soil Erosion here.


27. The energy currency in the body is _____.

  1. ATP
  2. Starch
  3. Glucose
  4. Carbohydrates
  5. Please read on the Characteristics of Living Organisms. (Answer is present here).


28. _____ is a contagious disease.

  1. Tetanus
  2. Beriberi
  3. Marasmus
  4. Tuberculosis
  5. You can read on Micro-organisms causing Food, Water and Air Borne Diseases here.


29. A petrochemical will NOT include _____.

  1. Detergent
  2. Aqueous Sodium Chloride
  3. Nylon
  4. Plastics


30. The pH value representing the most acidic solution is _____.

  1. 1.0
  2. 7.0
  3. 7.5
  4. 14.0
  5. Please read on various Agricultural Terms and Meanings. (pH is explained here).


You can Attempt Len Academy Mid-Term Test Questions for JSS1 here.

You can attempt Len Academy Basic Science Examination Questions for JSS1, 2nd Term here.

You can read various articles on Basic Science here

You can read various articles on Biology here

You can read various articles on Chemistry here

You can read various articles on Physics here

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Amazing facts in Basic Science

Antibiotics fights and kills bacteria. However, they do nothing to a virus

All insects have six legs. However, dragonfly has six legs but can't walk

The chin is defined as the protruding part of the face below the mouth, formed by the apex of the lower lip. It is shown below:

Chin - Len Academy

Interestingly, humans are the only animals with chin

Cranberries - Len Academy

Ripe cranberries will bounce like a ball. For this reason, they are nicknamed 'bounceberries'. They will also float in water

Tomatoes and Avocados are fruits, not vegetables

Sweat in itself doesn't smell. The smell that accompanies sweat is actually caused by the presence of bacteria on your skin. This bacteria breaks the sweat coming out of your sweat pores down into acids, thus making it smell.

Deodorants contains alcohol and are antibacterial. They work by killing the bacteria that makes sweat smell

Chewing aspirin during a heart attack may be a life saver. This is true because the drug inhibits platelets from forming a clot that can block an artery of the heart, thus stopping a heart attack

The kneecaps of newly born babies are not made of bone. Rather, they are little bits of cartilage which ossifies (turns from cartilages to bone) from age 2 to 6

Ice cubes - Len Academy

Ice cubes made with fresh water are white in color while those made with boiled water are crystal clear

Cats are unable to taste sweet things


Waste Management can be defined as the process of collecting, processing, recycling and controlling any material considered as waste.

Improperly disposed waste litters on road sides, in land fills, gutters and ditches. They are generally bad for the following reasons:

Wastes can be classified into various types. These are:

  • Biodegradable waste

  • Non-Biodegradable waste

  • Refuse

  • Sewage

  • Recyclable waste

  • Electronic waste

  • Green waste

  • Biomedical waste

  • Metabolic waste

  • Radioactive waste

  • Chemical waste

  • Animal product waste

Please read the explanations on the classification of wastes here

The African Star Apple is a seasonal fruit that grows abundantly in Nigeria and other West African Countries. It's fondly called African Cherry, Agbalumo or Udara in some parts of Nigeria.

African Star Apple, Cherry, Agbalumo, Udara - Len Academy

Below are some benefits of the African Star Apple:

  • It contains high amount of vitamin C

  • It contains a high amount of calcium

  • It contains high amount of potassium

  • It is a powerful antioxidant

  • It aids in weight reduction

  • It contains a high amount of iron

  • Its leaves, fruits and seeds are medicinal

  • It aids digestion and prevents vomiting

Please read more on the african star apple here

Disaccharides are composed of two monosaccharides joined together; thus are also referred to as double sugars.

Disaccharides are often added as sweeteners to food; for instance, the table sugar called sucrose is a disaccharide often used by us to sweeten our tea.

Maltose is another disaccharide used as an ingredient for making malt drinks, chocolates and candies.

The breast milk contains the disaccharide -> lactose.

Lactose is very vital for the normal growth and development of infants.

In adults, disaccharides are non essential nutrients. This implies that we can live without them as adults.

Below is a summary of monosaccharides that make up disaccharides (double sugars).

  • Maltose = Glucose + Glucose

  • Lactose = Glucose + Galactose

  • Sucrose = Glucose + Fructose

Other examples of disaccharides include trehalulose and isomaltulose

Polysaccharides are complex sugars. These are what we often eat whenever we eat carbohydrates.

We have four types of polysaccharides namely:

  1. Starch

  2. Glycogen

  3. Chitin

  4. Cellulose

Starchy foods include rice, cassava and yam.

Glycogen is stored in the human liver; as a result of the joining of many glucose molecules.

Chitin is a major component of insect and anthropod's skeleton.

Cellulose is a major component of a plant's cell wall. They cannot be digested when eaten by humans; hence they function as roughages.

Roughages are not classified as one the classes of food in humans. This is due to the fact that they aren't digested. They will rather facilitate the movement of bowels in the large intestine (colon). For this reason, they can be very useful in treating constipation.

Please read more on carbohydrates here