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.

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.