The vital nutrients by Leslie Samuel

Hi,

The classes of food such as carbohydrates, fats, proteins, fibres, water and vitamins are explained by Leslie Samuel. Detailed explanations on their importance in our bodies.

The vital nutrients by Leslie Samuel

Hi,

The classes of food such as carbohydrates, fats, proteins, fibres, water and vitamins are explained by Leslie Samuel. Detailed explanations on their importance in our bodies.

Following digestion of a meal by Leslie Samuel

Hi,

This video is excellent. Watch the functions of the digestive system and a journey through the digestive system.





Cheers

The skin by Leslie Samuel

Hi,

View this vivid video in which Leslie explains the structure of the skin and how it performs its various functions.




Cheers

Endocrine system by Leslie Samuel

Hi,

Endocrine system and hormones are very clearly explained in this video.



Cheers

Cellular Respiration-energy in a cell, by Leslie Samuel

Hi,

The first part of the video contains a very detailed description of the process. Parts of it are not required in our syllabus for O or N Levels but very interesting anyway.

Aerobic respiration, anaerobic respiration (alcoholic fermentation in yeast cells and lactic acid formation in muscle cells) found in the last one third are very good



Cheers

Photosynthesis- energy in a plant, by Leslie Samuel

Hi,

Watch this video for a very detailed description of the process.



Cheers

Organisms and their environment by Leslie Samuel

Hi,

Part 1 Levels of organisation,


Part 2 Ecology and ecosystem



Cheers

Nutrition, food chains and energy flow

Hi,

Part 1
Types of nutrition in organisms, energy flow:



Part 2
Flow of energy in the food chain and material cycles in nature:



Cheers

Methods in Biology by Leislie Samuel

Hi,

Watch the two videos below by Leslie Samuel teach characteristics of living things:
1-organisation
2-reproduction
3-growth and development
4-adjusting to the environment
5-adaptation and evolution




Part 2, Methods in biology:



cheers

Water and life processes by Leslie Samuel

Hi,

Water is important to life processes. View the entertaining video.



Cheers

Biological molecules with Leslie Samuel

Hi,

Biological molecules and their structutes.  





Cheers

The unit of life, by Leslie Samuel

Hi,

A very good introduction to cells, the units of life. A very warm and funny teacher presents the topic.


Cheers

How the eye works by Leslie Samuel

Hi,
Watch this vivid and clear explantion of how the eye works.

How Blood Flows Through the Heart , by Leslie Samuel

This is a vivid video on how blood flows through the heart.





Cheers

The Cardiac Cycle by Leslie Samuel

Watch this very good video on the cardiac cycle.



cheers

Nuclear energy is safe?

This article is about depending on nuclear power and the dangers that goes with production and distribution of the energy.

The accident at an earthquake-stricken Japanese nuclear plant in March made many countries review their plans to build and operate nuclear plants.The people are asking the authorities to reconsider the ethics in having nuclear plants. They are also clamouring to review the present safety measures especially if the plants are old.

Nuclear plants cost a fortune to build, but not much to run. So despite a steep tax on nuclear fuel, they are a cheap and reliable source of power that emits almost no greenhouse gases.

Cheers

Forests are not to be treated as infinite

Hi,

This is a very good article on valuing the rainforests that we still have with us.

Cheers