Len Academy Examination Questions for Basic Science, JSS3, 3rd Term

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

Of all animals, mosquitoes hold the record of killing most humans annually. They are responsible for the deaths of 725,000 - 1,000,000 persons yearly

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:

Interestingly, humans are the only animals with chin

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

Matter is composed of particles which can be:

1. Tightly packed together (as seen in solids).

2. Loosely packed together (as seen in liquids).

3. Completely separated (as seen in gases).

The movement of the particles of matter is a function of the overall kinetic energy present in them. You can think of kinetic energy as energy in motion.

An increase in the particles' vibrational, rotational or translational motion will imply an increase in temperature while a decrease in the particles motion (vibrational, rotational and translational) will mean a decrease in temperature. Based on this knowledge, we can therefore define temperature as the measure of the average kinetic energy possessed by the particles of matter.

You can read on the concept of matter here

Intelligence Quotient (IQ) is a score derived from a set of standardized tests developed to measure a person's cognitive abilities in relation to their age group.

IQ may also be defined as the ratio of mental age (MA) to chronological age (CA) multiplied by 100.

Below are some formulas pertaining Intelligence Quotient:

• IQ = MA x 100 ÷ CA

• MA = Mental age

• CA = Chronological age

• IQ above 100 = Brilliance

• IQ that equals 100 = Average

• IQ below 100 = Below Average

Among all organisms in the universe, the human brain is the most developed. This highly developed brain present in humans is the biggest factor that makes them unique from every other organism on earth.

According to research, the more folds a brain has, the more intelligent the organism possessing it will become. To this end, humans have brains with the greatest number of folds (or bumps) called gyri and grooves (or indentations) called sulci.

Please read on the uniqueness of man here.

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:

• The waste block drainages hence resulting to flooding, especially during the rainy seasons.
  Please read on erosion here.

• They generate bad smells which can be dangerous to health.

• They constitute nuisance and eyesore.

• They become homes to various disease causing organisms.
  Please read on vectors of diseases here.

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