Topics in Basic ScienceLen 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 Concept of Mass and Weight Sources, Functions and Deficiencies of Mineral Salts (Macro-nutrients) Sources, Functions and Deficiencies of Mineral Salts (Micro-nutrients) 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 Vectors - Examples of Vectors, Vector borne Organisms and the Diseases they cause Bones of the Human Skeleton Meaning of Drugs, Type of Drugs and Side effects of Drugs Immunization, Processes involved in immunization and its importance Food: Carbohydrates and Sugars Uniqueness of Man: Unique Characteristics of Man Waste Management: Types of Waste Matter: Concept of Matter
Academic Questions in Basic Science
Which of the following statement is FALSE concerning mass and weight?
A. Mass is the amount of matter in a body
B. The element hydrogen has the smallest mass
C. You will weigh more on planet jupiter than earth
D. Weight is a function of gravity
E. Mass and Weight have different Standard International (S.I) Units
F. None of the above
Which of the following statement is FALSE concerning matter?
A. Anything considered as matter must either have mass or occupy space
B. Air is an example of matter
C. Plasma is a state of matter
D. Chemistry is considered as the study of matter and the changes they undergo
E. Vacuum is a space completely void of matter
F. Matter will always take up space no matter how small or invincible it is to the eyes
Which of the following is NOT matter?
F. None of the above
The ultimate source of energy is _____.
The speed of wind is measured with a wind vane.
TRUE or FALSE
The nutrient majorly found in the liver is _____.
A body at rest possess _____ energy.
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A material or substance is considered to be a waste if when they are no longer useful or purposeful; and are thus discarded.
In some societies, we see waste materials all around. Apart from the fact that these waste are unpleasant to the eyes, they will also negatively affect national growth and development. In addition, inappropriately disposed wastes will promote the spread of diseases and (deaths) in areas where they are present.
Below are some of the causes of increasing wastes in various societies:
The larger the number of people in a society, the increase in the amount of waste produced.
Overpopulation will directly affect the increased turnout of waste materials from homes, market places and industries.
Note: Waste generated by the populace can be put into various types.
When funds allocated to waste management are siphoned, the society and its inhabitants will suffer. This is one of the many reasons for the presence of landfill waste in a society.
Corruption is a disease that eats up the society, either directly or indirectly.
In some cases, trucks meant to evacuate wastes from residential areas fail to show up because they are yet to be paid by the government for a previously done job.
The above instance results in the accumulation of wastes within these environments.
Education is always considered as the key to every successful society.
Oftentimes, market places and even residential environments are seen to be littered with various waste materials. If the residents were properly educated on the inappropriateness and dangers of their actions, the dumping of waste in these streets (and market places) will be reduced.
Note: The power of education should never be underestimated in all facets of life.
Educating and creating awareness to the citizens of a country will go a long way in reducing waste in the affected neighborhoods.
When a nation advances in technology, there will be a corresponding increase in the production of non-biodegradable waste like metal chips, rubbers and plastics.
Non-biodegradable wastes cannot be broken down and hence will always persist in landfills as solid waste.
Some people would rather discard their household waste just anywhere because they are too lazy to go to an appropriate waste dump site, perhaps because of distance.
Certain residents would rather litter the environment with various kinds of waste because they intend to avoid the payment of waste disposal fee (at waste disposal and management sites).
The presence of a few recycling industries in a society will result in the accumulation of excess waste.
When waste materials are properly recycled, new products will become cheaper since the cost of production becomes reduced from these recycled wastes. (That is, waste materials becomes raw materials for various production industries).
It is the function of production industries to pick up necessary waste materials and recycle them into new products through production.
When the people living in a society constantly dump waste materials anywhere; and without any form of fine or punishment; the act of improper waste disposal will be encouraged.
Personally, I feel bad each time I see people dump waste materials like the sachet, plastics, seeds and back of fruits (before or after they are consumed).
They consciously (or unconsciously) dump these wastes on the streets and major roads without any thought on the impending harmful effect of such waste.
Using the city of Lagos as an instance, a government agency named KAI (Kick Against Indiscipline) was previously establish to penalize and arrest offenders (that dispose waste inappropriately alongside other crimes) within the Lagos Metropolis. During this period, I discovered that city of Lagos became cleaner because most people adhered to the agency's rule while the culprits were indeed penalized.
Presently, it appears that KAI functions no longer in Lagos State. The has made some people go back to this unhealthy act.
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.
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Amazing facts in Basic Science
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
🐈 Cats 🐈 are unable to taste sweet things
🍎 Apples 🍎 actually float on water. Other fruits that float on water include 🍋 lemons, 🍌 bananas, 🍐 pears, and 🍊 oranges
Rain water contains vitamin B12.
Vitamin B12 is an important nutrient that keeps the blood cells and neurones healthy. It also assist in building the DNA (a genetic material present in the cell's nucleus). Vitamin B12 also aid in the prevention of megaloblastic anemia which makes people weak and tired
Rasceta is the name given to the lines on your ✋ palm ✋
Goats have rectangular pupils in their eyes.
Think of the pupil as a hole located in the centre of the iris within of the eye.
Note: To get an idea of an iris; 'when one is said to have blue eyes', it's because the iris is blue
Among all land animals, 🐘 Elephants 🐘 have the longest gestation period.
They stay pregnant for 22 months before giving birth to their young
🦘 Kangaroos 🦘 can't walk backwards
NOTABLE POINTS IN Basic Science
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:
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); and for this reason, they can be very useful in treating constipation.
The uniqueness of man can be defined as that which makes man distinct from every other animal and living organism.
Humans are higher animals when compared to other animals.
Under the classification of living organisms, humans belong to an order termed primates and thus share the same characteristics (as primates). In addition to these features, they also have their unique characteristics.
The eyebrow is an area of dense, delicate hair just above the eye.
Eyebrows perform two main functions:
Eyebrow modified in the form of Nike logo.
Note: Eyebrows can also be modified to enhance beauty.
All fruits have seeds.
There is nothing like a naturally occurring seedless fruit. Even banana, coconut and pineapple have all got seeds.