Chemistry of Life

Ervin Hastings & Isaiah Orellana


Water has polarity because of it's structure. The ends are slightly charged, making the hydrogen particles be attracted to the other ends of water molecules. Water attracting to other water molecules is known as cohesion. When water attaches to a different substance, it is called adhesion. Water also helps us cool down by taking our body heat and regulating our body temperature.


THere are different types of macromolecules They are Carbohydrates, Proteins, Lipids, and Amino Acids. All of these are essential for life. They give energy, build and destroy things, store our biological make up. All organic life contains Carbon.


Carbohydrates are cells that have different types of saccharides. They have carbon and mostly used for long-term energy in the body. Carbohydrates are called Carbs for short and are usually found in high numbers in wheat and grain products. Carbs are also found in many of the food groups.


Proteins are a type of macromolecule. Their main purpose in the body is to build and support muscle growth and replicate DNA . The function of a protein depends on the amino acids that make them.

Nucleic Acids

Nucleic acids are the database and contains the blueprint for everything living on Earth. These are more commonly known as DNA strands. Other types of these acids give short term energy. These include RNA and ATP .


LIpids are basically just fats. Wether its saturated or unsaturated depends on how full the strand is. Lipids are Carbon atoms surrounded by Hydrogen atoms. They have Oxygen atoms in the 'front' of the strand.

Biological Molecules - You Are What You Eat: Crash Course Biology #3