Chemistry of Life Flashcards
(19 cards)
What does the nucleus contain?
Protons & neutrons
What charge does the nucleus have?
A positive charge
Where do you find electrons?
Surrounding the nucleus of an atom
How does an atom become an ion?
When it loses or gains an electron
What is an anion?
A negatively charged ion
What is a cation?
A positively charged ion.
What are ionic bonds?
When electrons are transferred from one atom to another
What are covalent bonds?
Sharing of electrons between two atoms
What are hydrogen bonds?
Bonds between hydrogens on atoms
What are electrolytes?
Compounds which breaks up into both positive and negative ions when dissolved
What are the 4 main organic molecules.
Carbs, lipids, proteins, nucleic acids
What is the function of carbohydrates?
Energy
What is the main carbohydrate?
Glucose
What are lipids formed from?
Carbon, hydrogen, and oxygen.
What are the main lipids?
Triglycerides, phospholipids, and steroids
What are the two types of nucleic acids?
DNA & RNA
What is hydrophilic?
Water loving
What is hydrophobic?
Water fearing
What is tonicity?
The relative concentration of solutes dissolved in a solution and will determine the direction and extent of diffusion.
