Topics in Basic ScienceResources 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, second Term 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 Meaning of Drugs, Type of Drugs and Side effects of Drugs
Academic Questions in Basic Science
Vaccination involves a process of introducing pathogens or germs into a person in order to prevent such person from the diseases they cause.
With regards to the human health, foreign bodies are best regarded as _____.
A. International bodies
Disease causing organisms are termed _____.
E. Disease carriers
F. All the above options are correct
____ is formed from a reaction utilizing oxygen and glucose in the mitochondria of cells.
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?
Brachiation is a specialized form of movement exhibited by _____.
A. Human beings
_____ is a form of locomotion whereby an organism move by means of its two hind limbs.
B. Duo Pedalism
C. Double Pedalism
D. Dual Pedalism
If you take a look at the upper part of your left arm, you may likely see a tiny depressed spot. This is a sign that you are immunized.
Before I define immunization, I think it's a good idea if we understood it's concept. Below is a brief analogy:
When a baby is born, he or she must live in an environment. For now, think of your environment as everything that surrounds you. It includes the air, your clothes, the food you eat and so on.
Always understand that the air, water and land that make up our environment contain billions of pathogens or germs. Pathogens are organisms that cause diseases, that is: 'disease causing organisms'. Based on this fact, it becomes obvious that a variety of micro-organisms constitute a part of our environment. In this regard, pathogens or germs may find their way into the baby's system (whom is yet to be immunized).
The 'unimmunized' baby's immune system has no knowledge of the pathogens that gained entry into the baby; hence these pathogens are termed foreign bodies or non-self with regards to the baby's system.
The baby's immune system will react very slowly while attempting to fight back. The slow response from the immune system arises because the baby's defence system (called antibodies) have got no memory or idea of these foreign bodies.
It is worthy of note to state that foreign bodies are also referred to as antigens<.
The terms 'foreign body, pathogens, germs and antigens' will be used interchangeable in this article since they all refer to something similar; that is, 'causative agent for diseases'.
The above scenerio can be detrimental to the baby's health; but the good news is: 'Immunization gives a prior knowledge to the immune system on the specific antigens that may gain entry into the baby's system'.
In short, the baby's immune system is now prepared for whatever foreign body (antigen) that may find it's way into him or her; as far as he/she is immunized from the diseases caused by the antigen.
In reality, after a baby is born, he or she must be immunized against the respective antigens and their consequent diseases.
Immunization is defined as a process of introducing weakened or dead forms of disease causing organisms (pathogens or germs) into a person in order to prevent such person from the diseases they cause.
These weakened or dead forms of disease causing organisms administered to the baby is termed vaccine. For this reason, immunization is also referred to as vaccination
Most vaccines are given by injection (via a needle), while others may be given orally (via the mouth) or nasally (via the nose). Vaccinations via injection and oral (mouth) are shown in the image below:
Note: Immunization is also called vaccination, shots, jabs or needles
With regards to the fact that vaccines contain the exact same pathogens or germs that cause diseases (but in a weakened or dead form), the vaccine becomes harmless and do not make the child sick.
The importance of the infused vaccine is based on the fact that it triggers the production of antibodies.
Antibodies are responsible for fighting and killing the already weakened or dead pathogens contained in the vaccine during immunization or vaccination.
The generation of the specific antibodies against the pathogen or antigen (present in vaccine) will serve as an indication to preparedness; in case the same exact pathogen, antigen or germs find their way into the baby again.
However, understand that these antibodies retains a memory of how they rapidly killed their respective pathogens when they first entered the baby's system in their weakened/dead forms (during vaccination/immunization).
Now, let's imagine that after vaccination, the real pathogen (capable of causing disease) enters the child's body. At this point, the child will be on the safer side because:
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Amazing facts in Basic Science
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
NOTABLE POINTS IN Basic Science
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.
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:
Animal product waste
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.
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