Chemistry of life
Scarlett & Chris
Water and its characteristics
Adhesion- is the tendency for particles that are unalike to cling to each other.
Cohesion- is when a substance unites together and forms a whole.
A pH- is a scale based on concentration of hydrogen ions in a solution.
Polarity - It's Positive and Negative. The flow of a current is from (+) to (-).
If water goes down a stream. You can't reverse it.
Heat storage - is the amount of energy needed to raise the temperature of an object by one degree Kelvin.
WATER | Adhesion Adhesion is the tendency for particles that are unalike to cling to each other. | Cohesion Cohesion is the tendency for particles that are alike to cling together. |
Macromolecules
- Macromolecules have many atoms in them.
- All macromolecules that are organic have carbon in them and their are four types of them.
- They are lipids, nucleic acids,carbohydrates and proteins.
Proteins
- Proteins are made up by about twenty different amino acids.
- Proteins are in each and every cell in your body.
- Proteins are nutrients that supply the body with energy.
- A type of protein is called keratin and it makes up hair.
- Proteins change into different shapes and it determines how it interacts with things in the body.
- Some proteins help muscles function or us to stay alive.
Carbohydrates
- Carbs are made of oxygen, carbon and hydrogen.
- Carbs are a main source of energy in your every day life.
- Carbs provide energy for the body and helps breakdown fatty acids.
- Some food with carbs are bread, dried fruit, candy and fructose .
Nucleic Acids
- Nucleic acids are long chains of smaller molecules called nucleotides.
- Nucleotides have three parts which are a sugar, a base and a phosphate group.
- There are three types of nucleic acids RNA, DNA and ATP
- RNA promotes chemical reactions like an enzyme
- DNA stores hereditary information
- ATP breaks down the food molecules inside of cells.