Basic Science

Importance of immunization

len Alfred Ajibola - 09th September, 2021 @ 10:00 AM

Topics in Basic Science

What is science? Qualities of a scientist Resources from living things Resources from animals 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 Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Microorganisms causing food, water and air borne diseases Vector borne organisms and the diseases they cause Bones of the Human Skeleton

Academic Questions in Basic Science

Please click here to see all Questions and Answers

Which of the following diseases is associated with river blindness?

  • A. Anthrax

  • B. Lawnmower Disease

  • C. Onchocerciasis

  • D. Devil's Crunch

  • E. Trypanosomiasis

  • F. Tularemia

The vector for yellow fever is _____.

  • A. Aedes Mosquito

  • B. Female Anopheles Mosquito

  • C. Plasmodium

  • D. Flavivirus

  • E. Black Fly

  • F. Bacillus Anthracis

The bones of the head and face make up the skull. These bones are _____ in number.

  • A. 12

  • B. 14

  • C. 16

  • D. 18

  • E. 20

  • F. 22

Bacteria are not a constituent of our environment.

  • A. True

  • B. False

Below are types of drugs. Which of these is considered as pain killers?

  • A. Stimulants

  • B. Depressants

  • C. Opiods and Morphine Derivatives

  • D. Hallucinogens

  • E. Anabolic Steroids

  • F. Cannabinoids

Which of the following statement is false concerning drugs?

  • A. Drugs can be inhaled

  • B. Drugs can be injected directly into the bloodstream 

  • C. Drugs can be eaten

  • D. Drugs exist exclusively in the forms of tablets and syrups

  • E. Drugs can be placed under the tongue

  • F. Drugs can be taken with water or another liquid

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


Importance of Immunization

Both children and adults need immunization. We already know that it is wiser, easier, better and cheaper to prevent a disease than to cure it. This is exactly what immunization does.

All human beings must be immunized or vaccinated against certain diseases in order to prevent avoidable sufferings and deaths resulting from these diseases.

Below are images of children suffering from polio because they weren't immunized against the disease (polio).

Children with polio - Len Academy

In the above image, if the children had been vaccinated (or immunized) against polio, they wouldn't have contracted the disease.

You can read on amazing facts for students here.


Immunization or vaccination is defined as a process of introducing the weakened or dead forms of disease causing organisms into a person in order to prevent such person from the disease they cause.

Please read on the introduction to immunization and how it works here.


Immunization develops our immune system and makes us resistant or immune to certain infectious diseases such as:

  • Measles

  • Pertussis (whopping cough)

  • Mumps

  • Rubella

  • Polio

  • Haemophilus influenzae type b (Hib)

  • Chicken pox

  • Smallpox

  • Diphtheria

  • Tetanus

  • Rotavirus

  • Yellow Fever

  • Tuberculosis

  • Hepatitis B

You can attempt basic science questions for JSS2 here.


Below are the importance of immunization or vaccination:

  1. Immunization prevents a child or an adult from getting certain incurable diseases. Usually, these incurable diseases when contracted by an unimmunized individual may result in serious complications and even death.

  2. It's is much cheaper, ealier and less painful to get immunized than to get infected by an unimmunized disease. Recall that 'prevention is better than cure'.

  3. A pandemic or an epidemic can be avoided if the people are immunized against it's respective diseases. As an instance, the COVID-19 disease came as a surprise to the world, killing millions of people. This happened because humans were yet to be immunized against COVID-19 before it's sudden arrival.

  4. For the sake of others who have got impaired immune system and thus cannot develop immunity against certain contractible diseases even after their vaccination against such diseases, their best form of protection is the immunization of those around them. Such impaired immune individual becomes safe because the people around them are free or immunized from such contractible diseases.

  5. Immunization aims to protect future generations by eradicating diseases. As an instance, the disease 'polio' had been eradicated from the United States of America via the processes of child immunization.

You can read on bones of the human skeleton here.


In summary, the ultimate goal of immunization is to save life and that's exactly what it does.

You can test your knowledge on various questions and answers here.

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Amazing facts in Basic Science

According to scientific research, if the first tear drop comes from the right eye, it’s tears of joy. If it comes from the left eye, then it is as a result of pain

Dentistry is the oldest profession in the world. This is considered true because a research conducted by the University of Bologna, Italy on a 14,000-year-old skull found that one rotten tooth in the jaw had been deliberately scoured and scraped with a dental tool

Scientific research has it that the human nose can distinguish more than a trillion different odors

Tiger fur and skin - Len Academy

Tigers have striped fur. So also is their skin

Red-Billed Quelea - Len Academy

The most common wild bird in the world is native to Africa, and it's the red-billed quelea with a population estimated to be around 1.5 billion

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:

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

Notable points in Basic Science

We have six classes of food. These are:

  1. Carbohydrates

  2. Proteins

  3. Fats and Oils

  4. Vitamins

  5. Mineral Salts

  6. Water

In humans, roughages are not classified as one of the classes of food. This is so because they aren't digested. Instead, roughages facilitate the movement of bowels in the large intestine (colon); and for this reason, they can become useful in treating constipation.

Food refers to anything that is ingested by living organisms, giving them nutrients and thus enabling them to stay alive.

As an instance, 99% of a panda's diet is bamboo. In this case, bamboo is considered as food to a panda since it provides a source of nutrient and keeps it alive. This is shown in the image below:

Panda eating bamboo - Len Academy

Please read more on food here

The only process in nature that actively enriches our atmosphere with oxygen is photosynthesis. Every other process like respiration, burning and combustion takes away oxygen from it. In addition, they introduce carbon(IV)oxide (CO2) into the atmosphere.

Photosynthesis is also the only process that takes away carbon(IV)oxide (CO2) from the atmosphere.

Photosynthesis is defined as a process by which green plants manufacture food by utilizing carbon(IV)oxide and water in the presence of sunlight.

Oxygen is given off as a by-product of photosynthesis. In regards to this, it is recommended that each person plants a tree.

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