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Transport Layer: Layer 4 of the OSI model - ICT Ecological pyramid explained with its importance and limitations - Biology Importance of immunization - Basic Science Postural defects that affect the spine or backbone - PHE Types of Carbohydrates: Monosaccharides and Polysaccharides - Basic Science Carbohydrates: Disaccharides and Oligosaccharides - Basic Science Importance of forest: Forest reserves in Nigeria - Agricultural Science Wildlife reserves in Nigeria and its importance - Agricultural Science Belt Drives: Types of belt drive - Basic Technology Cooperation in civic education - Civic Education Solutions to air pollution - PHE Business Structure: What is a business structure? - Business Studies Advantages and Disadvantages of franchise - Business Studies Why does suffering and pain exist? - CRS Angles: Type of angles based on degree measurement - Mathematics Angle Pairs: Types of angle pairs - Mathematics Arms of Government: Functions of the Executive, Legislature and Judiciary - Government Le Chatelier's Principle: Changes in concentration and pressure in dynamic equilibrium - Chemistry Chemical Equilibrium: Dynamic Equilibrium in Chemistry - Chemistry Static and Dynamic Equilibrium explained with their Differences - Chemistry Child marriage and its consequences - Social Studies Consequences of Female Genital Mutilation - Social Studies Forgiveness: Jesus' teaching on Forgiveness and its importance - CRS What is Forgiveness? Jesus' teaching on Forgiveness - CRS Advantages of Inflation - Economics Disadvantages of Inflation - Economics Concept of Inflation in Economics - Economics Hindbrain: Medulla Oblongata and its features - Biology Principle of Marketing: People as a Marketing Mix and their Importance - Commerce Len Academy Examination Questions for Basic Science, JSS2, 2nd Term - Basic Science Food web explained with examples - Biology Scheme of work for Economics, SS1, First Term - Economics Scheme of work for Economics, SS1, Second Term - Economics Scheme of Work for Economics, SS1, Third Term - Economics Branches of Geography: Physical and Environmental Geography - Geography Ceramics: Types of Ceramics - Basic Technology Advantages and Disadvantages of Chain drives - Basic Technology Len Academy Examination Questions for Basic Science, JSS3, 3rd Term - Basic Science Len Academy Examination Questions for Basic Science, JSS3, 2nd Term - Basic Science What is a franchise? Types of franchise - Business Studies What is Honesty? Who is a Dishonest Person? Consequences of Dishonesty - Civic Education What is Corporation? Types, Advantages and Disadvantages of Corporations - Business Studies Scheme of Work for Government, SS1, First Term - Government Scheme of Work for Government, SS1, Second Term - Government Scheme of Work for Government, SS1, Third Term - Government What is Limited Liability Company? Its Advantages and Disadvantages - Business Studies Partnership in Business: Types, Advantages and Disadvantages - Business Studies Principle of Marketing: Positioning as a Marketing Mix - Commerce Principle of Marketing: Packaging as a Marketing Mix - Commerce Chemistry Scheme of Work, SS1, First Term - Chemistry Chemistry Scheme of Work, SS1, Second Term - Chemistry Chemistry Scheme of Work, SS1, Third Term - Chemistry Literature in English Scheme of Work, SS1, 1st Term - Literature in English Literature in English Scheme of Work, SS1, 2nd Term - Literature in English Literature in English Scheme of Work, SS1, 3rd Term - Literature in English Characteristics of Double Entry System - Accounts Examples on the Principle of Double Entry System - Accounts Advantages and Limitations of the Double System in Accounting - Accounts Elements of Promotion in Marketing Mix - Commerce Principle of Marketing: Promotion as a Marketing Mix - Commerce Biology Scheme of Work, SS1, First Term - Biology Biology Scheme of Work, SS1, 2nd Term - Biology Biology Scheme of Work, SS1, 3rd Term - Biology Prevention and Control of Crop Pests - Agricultural Science Economic Importance of Crop Pests - Agricultural Science Phrase: Types of Phrase - English Len Academy Questions for Basic Technology JSS3, 2nd Term, 2020 - Basic Technology Len Academy Question for Basic Technology, JSS3, 2nd Term, 2020, Part 2 - Basic Technology Classification of Insect Pests and their Economic Importance - Agricultural Science Jesus' teaching on Giving - CRS Concept, Advantages and Disadvantages of Multi-Party System - Government Belt and Pulley Drives: Types of Belt in Belt Drives - Basic Technology Seminal Vesicles and Bulbourethral Glands as Male Accessory Sex Organs - Biology Principle of Marketing: Place as a Marketing Mix - Commerce Agricultural Machines and their Uses - Agricultural Science Clause and Types of Clause explained - English Derived Units: Similarities and Differences with Fundamental Units - Physics Concept, Advantages and Disadvantages of Two-Party System - Government Male Reproductive System: Scrotum and its contents - Biology Principle of Marketing: Price as a Marketing Mix - Commerce Principles of Marketing: The 7 Ps of Marketing Mix - Commerce Conversion of Number Bases explained with examples - Mathematics Soil Erosion: Causes of Soil Erosion - Agricultural Science Ways to prevent Soil Erosion - Agricultural Science Essay: How to write the major types of essay - English Healthy Self-esteem: Characteristics and Benefits of Healthy Self-esteem - Social Studies Causes of Environmental Problems - Social Studies Effects of Environmental Problems and Solutions to Environmental Problems - Social Studies Compounds in Chemistry: Characteristics of Compounds - Chemistry Types of Mixture: Homogenous and Heterogeneous Mixtures - Chemistry Mixtures: Characteristics of Mixtures - Chemistry Functions of the Wholesaler - Economics Advantages and Disadvantages of the Wholesaler - Economics Wholesale Market: Who is a Wholesaler? - Economics Characteristics of the Wholesaler - Economics Brain: Introduction to the Human Brain - Biology Forebrain: Lobes of the Cerebrum and their Functions - Biology Cerebellum: Parts and Functions of the Cerebellum - Biology Midbrain: Division and Functions of the Midbrain - Biology Negative Feedback Mechanism in Homeostasis - Biology Factors necessary for Division of Labour - Commerce Disadvantages of Division of Labour - Commerce Advantages of Division of Labour - Commerce Arterial Disorders: Characteristics and Causes of Arterial Disorders - Biology Consequences of Drug Trafficking and Solutions to Drug Trafficking - Social Studies Drug Trafficking: Reasons for Drug Trafficking - Social Studies Gravity: Interesting facts on Gravity - Physics Asexual Propagation in Plants, Types and Examples - Agricultural Science Differences between Gymnosperms and Angiosperms - Agricultural Science Relative Density of Substances and Specific Gravity - Physics Retail Market: Who is a Retailer and Examples of Retailers - Economics Market: Types of Market - Economics Market - What is a Market in Economics? - Economics Self-esteem: How to overcome Low Self-esteem - Social Studies What is Low Self-esteem? Characteristics of Low Self-esteem - Social Studies Low Self-esteem: Causes of Low Self-esteem - Social Studies Physical Properties of Matter explained with Examples - Chemistry Chemical Properties of Matter explained with Examples - Chemistry Differences between Physical and Chemical Change - Chemistry Outbound Marketing explained - Commerce


A _____ market provides a platform whereby job seekers link up with employers in an attempt to be hired.

  • A. Wholesale market

  • B. Bond market

  • C. Physical market

  • D. Virtual market

  • E. Factor Market

  • F. Labor Market

Economics

ANSWER: Labor Market

A labor market provides a platform whereby job seekers link up with employers in an attempt to be hired.

Understand that the labor market platform may occur virtually or physically.

Which of the following is not a type of market based on commodities bought and sold?

  • A. Wholesale market

  • B. Bond market

  • C. Physical market

  • D. Virtual market

  • E. Factor Market

  • F. Labor Market

Economics

ANSWER: Wholesale Market

Wholesale market is a type of market based on channel of distribution and not the commodity bought and sold. Another market based on channel of distribution is the retail market.

Apart from the correct options above, other examples of market based on commodities bought and sold include primary market, consumer goods market, auction market and knowledge market.

According to economists, a market refers to a/an _____ comprising of various buyers and sellers carrying out business transactions.

  • A. Place

  • B. Location

  • C. Entire area

  • D. Online platform

  • E. Avenue

  • F. Axis

Economics

ANSWER: Entire area

According to economists, a market goes beyond a place. It spans an entire area where buyers and sellers carry out business transactions. For this reason, the prices of commodities will be quite similar in an economists definition of market.

The image below shows the concept of an economists definition of market:

Market in economics - Len Academy

Please read on the concept of market in economics here

Primary market is a type of market based on _____.

  • A. Market structure

  • B. Demand

  • C. Supply

  • D. Commodities bought and sold

  • E. Channel of distribution

  • F. Internet and world wide web

Economics

ANSWER: Commodities bought and sold

Market can be classified based on the commodities bought and sold. Examples of such markets include primary market, consumer goods market, auction market, knowledge market, black market and so on.

Please read on the types of market here

Whatever is being marketed must always provide value to its potential consumers.

  • A. True

  • B. False

Commerce

ANSWER: True

The ultimate goal of marketing is to create an awareness such that the consumers eventually purchase whatever is being marketed. To this end, the goal of every consumer is to get value for what they had purchased.

Understand the marketing or manufacturing company aims to make profit. Profit making in business is a typical characteristic of commerce (on the part of the producer or marketer).

Which of the following is not a branch of marketing?

  • A. Merchandising

  • B. Promotions

  • C. Forex

  • D. Search Media Optimization

  • E. Social Media Optimization

  • F. Copywriting

Commerce

ANSWER: Forex

Forex is not a branch of marketing. It is a business in its own right. In forex business, people trade (buy and sell) currencies with an ultimate aim of making profit.

Please read more on Marketing and it's branches here

Which of the following isn't an element of the periodic table.

  • A. J

  • B. Y

  • C. W

  • D. B

  • E. U

  • F. K

Chemistry

ANSWER: J

J is not an element of the periodic table. Infact, it is the only letter not present in the periodic table.

The names of the elements (from the options in the questions) are listed below:

  • Y - Yttrium

  • W - Tungsten or Wolfram

  • B - Boron

  • U - Uranium

  • K - Potassium

Below is an image of the periodic table containing all elements.

Periodic Table - Len Academy

According to the periodic table, elements in the same group have got the same number of shells.

  • A. True

  • B. False

Chemistry

ANSWER: False

As we go down the groups of the periodic table, the shells of each element increases by one. As an instance, hydrogen, sodium and potassium are group one elements. However, each has got one, two and three shells respectively.

It is noteworthy to state that all elements in the same group have got the same number of valence electrons, (not shells). Understand that valence electrons are the electrons present on the outermost shell of an atom. As an instance, all group one elements have got one valence electron.

The image below shows the electronic configuration of sodium, a group one element with one valence electron.

Electronic configuration of sodium - Len Academy

The periodic table of elements is also called the Mendeleev's table.

  • A. True

  • B. False

Chemistry

ANSWER: True

The periodic table, also called the periodic table of elements or Mendeleev's table is a table that shows an organized arrangement of the 118 elements according to their atomic number.

The periodic table is also called Mendeleev's table in honor of its creator, Dmitri Ivanovich Mendeleev, a Russian chemist and inventor. He is famously remembered for creating the periodic table of elements and formulating the periodic law.

Please read the periodic table of elements here

The acronym Wi-Fi stands for _____.

  • A. Wireless Files

  • B. Wireless Flips

  • C. Wireless Fidelity

  • D. Wireless Freedom

  • E. Wireless and Free

  • F. Wireless Fun

English

ANSWER: Wireless Fidelity

Wi-Fi (also spelt as WiFi, wifi, wi-fi or wi Fi stands for wireless fidelity. It is a wireless technology found in various computer devices like phones, laptops, smart watches, video game consoles, televisions, speakers and so on.

Please read on global acronyms and their meanings here

What is the first step towards disabling automatic image download on WhatsApp?

  • A. Click on the three dots on the top right hand corner

  • B. Click on the WhatsApp logo

  • C. Click on the settings icon on the top right corner

  • D. Click on the settings icon located on the to top-center of the app

  • E. Click directly on the storage and data icon located on the top right corner

  • F. Click on the mobile data usage icon located on the top right corner

ICT

ANSWER: Click on the three dots on the top right hand corner

The first step towards making changes on WhatsApp settings is to click on the three dots on the top right hand corner of the app.

To disable automatic image download on WhatsApp, below are the steps to follow:

  1. On the WhatsApp application, click on the three dots on the top right hand corner

  2. Click on settings

  3. Click on storage and data

  4. Select 'when using mobile data'

  5. Untick the boxes for photos, videos, audios and documents respectively

The followings are ways to conserve data on android phones except _____.

  • A. Turning on data saving mode

  • B. Activating background apps

  • C. Use of Wi-Fi to update apps

  • D. Disable automatic image download on WhatsApp

  • E. Watch low resolution videos on youtube

  • F. Utilizing a reputable data saving app on google playstore

ICT

ANSWER: Activating background aps

Activating background applications (apps) does not save data. Infact, most apps consume data even when in background mode. In order to save data, restrictions on data consuming app should be set at background level.

The restrictions on background consuming apps can be done via the phone settings.

Please read on how to consume less data on android phones here

Inverted toothed chain drive - Len Academy

With regards to chain drives, the diagram above is a/an _____ chain.

  • A. Roller

  • B. Silent

  • C. Leaf

  • D. Flat-top

  • E. Detachable

  • F. Acceleration

Basic Technology

ANSWER: Silent

The silent chains are series of toothed linked plates attached to one another in a pin-like manner that allow for free flexing of the chains.

They are typically used in industrial equipment where quietness, silence and smoothness are required.

Understand that the silent chains are also called inverted tooth chains.

A type of chain drive commonly used in bicycles is the _____ chain.

  • A. Roller

  • B. Silent

  • C. Leaf

  • D. Flat-top

  • E. Detachable

  • F. Acceleration

Basic Technology

ANSWER: Roller

Roller chains are a type of chain drive utilized in bicycles. They are made of of series of small cylindrical rollers attached together at both sides of its entire length. It is shown in the image below:

Roller chain in bicycles - Len Academy

A chain drive consists of an endless chain running over two _____.

  • A. Hooks

  • B. Spikes

  • C. Spokes

  • D. Sprockets

  • E. Hinges

  • F. Danes

Basic Technology

ANSWER: Sprockets

A chain drive is one of the mechanisms through which power is transmitted mechanically from an engine to the wheels via an endless rotating chain.

The chain drive consists of an endless chain running over two sprockets. See the image below:

Chain Drive - Len Academy

Please read more on chain drives, types and classifications here

A Greek letter that expresses density is _____.

  • A. Alpha_d

  • B. Beta_d

  • C. Theta_d

  • D. rho

  • E. dho

  • F. dhr

Physics

ANSWER: rho

rho is a Greek letter that expresses density.

Density is defined as the mass of a unit volume of a substance. It's standard international (SI) unit is kg/m3​​​.

A glass of water has a higher density than an exact glass of oil.

  • A. True

  • B. False

Physics

ANSWER: True

A glass of water has a higher density than an exact glass of oil. This is true because water has more weight (is denser) than oil. For this reason, if oil is poured on water, it floats on it because it's lighter.

It is noteworthy to state that water has a density of 1000kg/m3 while oil has got a lesser value.

Please read more on density here

A type of democracy whereby shura is practiced is termed _____ democracy

  • A. Direct

  • B. Indirect

  • C. Constitutional

  • D. Islamic

  • E. Authoritarian

  • F. Participatory

Government

ANSWER: Islamic

In islamic democracy, the leaders engages in a special for of consultation practiced by prophet Mohammed. This practice is termed 'shura'.

Understand that the Islamic law serves as the cornerstone to which Islamic democracy is laid.

A type of democracy whereby the people vote a bill into law is termed _____ democracy

  • A. Direct

  • B. Indirect

  • C. Constitutional

  • D. Islamic

  • E. Authoritarian

  • F. Participatory

Government

ANSWER: Direct

In direct democracy, the lawmakers (house of senate and house of representatives) are not required. Rather, the people directly vote a bill into law.

In reality, direct democracy isn't feasible in a large society.

Please read more on types of democracy here

In democracy, every citizen has got the right to vote and be vote for. Also, the principle one man one vote in this regard refers to which characteristic of democracy?

  • A. Separation of power

  • B. Freedom of expression

  • C. Constitutional supremacy

  • D. Rule of Law

  • E. Political equality

  • F. Popular sovereignty

Government

ANSWER: Political equality

Political equality is a characteristic of democracy whereby every citizen has got the right to vote and be vote for. Also, one man is entitled to one vote in this regard.

Importantly, we should not disenfranchise ourselves by not utilizing both political rights: that is, right to vote and be voted for.

Please read more on the characteristics of democracy here

____ 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

Basic Science

ANSWER: ATP

ATP is an acronym for 'AdenosineTriPhosphate'. It is the energy currency in the body. In short, it is the very molecule we need to perform any form of energy consuming activity in the body.

Understand that ATP is a product of aerobic respiration which requires oxygen and glucose, and ultimately take place in the mitochondria of cells.

Please read more on the basic characteristics of living organisms here

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

Basic Science

ANSWER: Carbon has the highest ratio of the constituent elements of carbohydrates

Hydrogen has the highest ratio of the constituent elements of carbohydrates.

Understand that carbohydrates are composed of three elements. They are: carbon, hydrogen and oxygen (CHO); in the ratio of 1:2:1. As an instance, glucose is a carbohydrate and its formula is C6H12O6.

Which of the following is a class of food?

  • A. Water

  • B. Fibre

  • C. Roughages

  • D. Latex

  • E. Tanins

  • F. Wax

Basic Science

ANSWER: Water

Food is defined as anything which provides nutrients when ingested by living organisms in order to stay alive.

We have six classes of food. They are:

  1. Carbohydrates

  2. Proteins

  3. Fats and Oils

  4. Vitamins

  5. Mineral salts 

  6. Water

Please read more on food, carbohydrates and sugars here

Cordage is made from _____ crop.

  • A. Food

  • B. Fibre

  • C. Ornamental

  • D. Oil

  • E. Cash

  • F. Vegetables and Spice

Agricultural Science

ANSWER: Fibre

Cordage simply means rope or string, and they are made from a variety of fibre crops such as dogbane, milkweed, hemp, flax, nettles, cattail, maple, yucca, cedar, basswood, tile, straw and so on

Please read more on the differences between crops and plants here

_____ is defined as the solid and arable part of the earth where agricultural activities are be carried out.

  • A. Soil

  • B. Farmland

  • C. Agricultural land

  • D. Biosphere

  • E. Open land

  • F. Planting and grazing land

Agricultural Science

ANSWER: Agricultural land

The definition in the question above best refers to agricultural land. This is true because an agricultural land include any type of land (present on the earth) which is used for a variety agricultural purposes. Such agricultural purposes of land will include:

  • Land for cultivation of crops

  • Land for rearing of animals

  • Land for wildlife reserve

  • Land for forest and so on

Please read more on agricultural land and its uses here

_____ is defined as the solid and arable part of the earth where agricultural activities are be carried out.

  • A. Soil

  • B. Farmland

  • C. Agricultural land

  • D. Biosphere

  • E. Open land

  • F. Planting and grazing land

Agricultural Science

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Quotes for Students

The first problem for all of us, men and women, is not to learn, but to unlearn - Gloria Steinem

The act of unlearning is an excellent form of learning. Infact, you will need the skills of unlearning if you intend to become an expert in your desired field.

Do yourself a favor by unlearning, learning and re-learning on a daily basis

If you don't design your own life plan, chances are you'll fall into someone else's plan. And guess what they have planned for you? Not much - Jim Rohn

There's something special about you. It doesn't matter whether you work for a company or someone; what matters is the amount of investment you've made on yourself.

Investing in yourself is the best life plan you can design for your future

Smile - Len Academy

Peace begins with a smile - Mother Teresa

Never underestimate the power of your smile. It can lift up the depressed, improve the mood of the downtrodden and even discourage a suicidal attack. Also remember that your smile makes you more beautiful

Smile always for your own good and the good of others

The only person who is educated is the one who has learned how to learn …and change - Carl Rogers

To perfect your learning process, you must learn, unlearn and re-learn. Infact, we all need to learn how to unlearn those vices we know about ourselves.

Do you know that seeing the devastating consequences of vices (perhaps in movies or real-life) can initiate the unlearning processes in one who does such?


Key Points for Students

God created human beings for the following reasons:

  1. To know Him

  2. To love Him

  3. To serve Him

  4. To be happy with Him forever

Our first parent, Adam and Eve enjoyed a life of complete happiness before they committed sin. They never knew what pain nor sorrow was until they disobeyed God. In short, both were perfect beings until they committed the sin of disobedience against God.

Disobedience may simple be defined as the failure to obey rules, command or someone in authority.

Adam and Eve were the first human beings to disobey God.

Please read more on the biblical account of first human disobedience here

CRS

Adam and Eve were able to commit sin (disobey God's command) because God had given them that special gift of free will.

The events written in Genesis 3:1-13 presents the story of the first human disobedience.

Now the snake was the most cunning animal that the Lord God had made. The snake asked the woman, 'Did God really tell you not to eat fruit from any tree in the garden?'

Genesis 3:1

Moral Lesson: The devil can come in any form and can tempt any man, woman, boy or girl, as far as he or she is of the age of reasoning.

Sometimes, satan creeps into one's life by asking simple questions. Notice that the snake (satan) did exactly this when it approached Eve to tempt her. To this end, we need to be at alert prayerfully because the evil one can tempt any human in any situation, place and at any point in time

CRS