what is biology

what is biology


What is Biology






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What is Biology






<b>Introduction – What is Biology?


Biology is a science. It is the study of living things in their environment.

The word Biology is derived from two Greek words: Bios which means life and logos which means knowledge. People who

study Biology are called Biologists.

<b>Branches of Biology,


Characteristics of living things,

Classification of living things,

Cells and their structure, the microscope and how to use and care for it,

Cell Physiology,

Nutrition in plants and animals.

Biology can be divided into various branches. Such branches are named according to which organisms are involved:

  1. Botany- the study of plants e.g. Maize.
  2. Zoology- the study of animals e.g. Leopard
  3. Microbiology- the study of micro-organisms e.g. bacteria
  4. Mycology- the study of fungi e.g. mushrooms

<b>Importance of Biology


Study of Biology helps you to develop scientific skills such as planning, observing, classifying, measuring, recording

and analyzing

It is also necessary for entry into careers such as Medicine, Teaching, Agriculture and Research. Scientific research

based on Biology has led to development of high yielding and disease-resistant plants and animals.

In solving environmental problems such as shortage of food, poor health services misuse of environmental resources

e.g. forests, wildlife, water and soil.

To know more about living organisms in relation to their environment.

<b>Nutrition: nourishment


Reproduction: Refers to giving rise to young ones of the same kind. Living things give rise to young ones of their own


Irritability: Living things have the ability to detect and respond to changes in their environment.

Gaseous Exchange: They exchange Carbon (iv) Oxide and Oxygen, across a respiratory surface.

Respiration: They breakdown food in their body cells to release energy.

Excretion: They remove waste products of chemical reactions from the body.

movement: Change in position of part or whole organism.

Growth and Development: They grow. Growth is permanent increase in size and mass of an organism.

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Matrices and Transformation



Quadratic Expressions and Equations




Differentiation and Integration



Standard Deviation


Binomial Expansion




Volume Scale Factor


Cubes and Cube Roots


Linear Equations




Natural Numbers


Uniform Circular Motion


Electromagnetic Induction


Quantity of Heat


The Electromagnetic Spectrum


Mains Electricity


Floating and Sinking






Gas Laws






Thin Lenses


Distance and Displacement


Waves I


Refraction of Light




Hooke’s Law


Cells and Simple Circuits




Heating effect of Electric Current




Electrostatic I


Particulate Nature of matter


Heat Transfer


Magnetic effect of electric current


The Turning Effect of a Force




Measurement I


Current Electricity II


Introduction to Physics


Measurement II


Equilibrium and centre of Gravity


Newton’s Laws of Motion


Sulphuric (VI)acid – contact process


Standard conditions for measuring Enthalpy changes


Oxidation Number and oxidation state


Reaction Rate and Reversible Reactions


Oxides of nitrogen


Oxides of Sulphur


Nitric(V) Acid


Energy Changes in Chemical Reactions


Ammonia preparation and uses


Acid Bases and Salts


Frasch Process of Extraction of Sulphur



Laboratory preparation of chlorine


Hydrogen Chloride and Hydrochloric acid


Separation of Iron filings and sulphur


Reactivity Series of metals


Role of chemistry in the society


Percentage of nitrogen and oxygen in air by volume


Acids,bases and indicators


Allotropes and amorphous carbon



Alkanes,alkenes and alkynes


Salts, Types and Methods of preparation


Akanes, Alkenes and Alkynes – Hydrocarbons


The Mole: Calculations involving mass , volume and moles



The Mole


Hydrocarbons – Alkenes


Effect of electric current on substances


Gas Laws


Volumetric Analysis or titration


Structure of the Atom and the Periodic Table


Structure and Bonding


Sexual Reproduction in Animals


The Cell as the basic unit of Life


monosaccharides, dissacharides, polysaccharides


Classification I – Diversity of Organisms


Gaseous exchange in Mammals






Gaseous exchange in living organisms


Absorption of Water and Minerals Salts




Growth and Development


Classification II


Ecology the study of interrelationships



Reproduction in Plants and Animals


Transport in Animals


Transport in Plants


Osmosis, Diffusion and Active transport


Hottest part of a non-luminous flame


Relative atomic mass


Laboratory apparatus used for heating


Ion Formation


Types of Bunsen Burner Flames


Laboratory safety rules






Oxidation numbers


Ion Formation and charge


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Hess’ Law of constant heat summation






































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