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What is the Immune System?: The immune system is normally described as a network organised into subsets which regulate, pass information back and forth and protect the whole body from microorganisms. These pathogens carry bacteria that invade and harm the functions of the body. For example, these guards of the body are known as the skin, cells lysozyme, lymphocytes (white blood cells), stomach acid antibiotics and vaccinations. The immune system is one the complicated but amazing systems of the...

What is the Digestive System? The digestive system is a set of organs; which take part in digesting our food and giving us the necessary nutrients. What is the role of the Digestive System? The role of digestion is to break down large molecules of food into its simplest small molecules; so that its nutrients can be absorbed; which helps the whole body to thrive and function.

Circulatory System What is the Circulatory System? The circulatory system involves our heart, lungs, arteries, vena cava, aorta, veins, capillaries and red blood cells. What is the role of the Circulatory System? The role of the circulatory system is to keep us alive by pumping blood around the body. Without any blood; we would be unable to receive oxygen and nutrients, which are carried by our red blood cells to the muscles; therefore, we would not be alive; due to our blood cells not carryin...

The advanced biology study guides all in one!

What is the Origin of our Universe? The Origin of our universe, which astronomers and scientists believe, came from a massive explosion in space; therefore, this explosion is known as the Big Bang Theory. Let’s look at this theory in a bit more detail....

What are Stars? Stars are planets, which have been made from exploding balls of gases; that are made from Helium and Hydrogen. These stars form their first life stage in the nebula. The number of life stages of small stars is five; while the number of life stages for big stars are six. Therefore, let’s begin first with the main life stages of small stars.

What is the Earth-Moon System? The earth moon system, is a system that explains how one of the planets, whether earth or moon, can affect the other planet. These notes go deep into the planetary systems of the earth and moon.

Astronomer Scientists and their Achievements There have been many astronomers who have helped give us an image of the universe, and how it functioned. However, out of all these astronomers, there are four, which have given the biggest and most beneficial impacts on our understanding of the universe, as well as changed the present and future out our society for the better. The four astronomers I shall talk about are Nicolaus Copernicus, Johannes Keplar, Galileo Galilei and Sir Isaac Newton.

These note go into energy transfers, and how energy is transferred to other places

Electrical Safety Procedures As we know, electrical appliances are the most dangerous technology ever created and used, therefore, it is really important that we know the procedures and practices of electrical safety; so we can be save and avoid injury or a fatal death caused by electrical shock.