Unit 2 The Chemical Lvl of Organization Flashcards
Describe an atom and an element Compare the ways in which atoms combine to form molecules and compounds Use chemical notation to symbolize chemical reactions Describe the physiological roles of inorganic compounds
A component of water and other compounds this gas is essential for respiration
O
Oxygen
Found in all organic molecules
C
Carbon
A component of water and most other compounds in the body
H
Hydrogen
Found in proteins, nucleic acid, and other organic compounds
N
Nitrogen
Found in bones and teeth
Is important for membrane functions, nerve impulses, muscle contraction, and blood clotting
Ca
Calcium
Found in bones and teeth, nucleic acids, and high energy compounds
P
Phosphorus
Imporant for membrane function, nerve impulses and muscle contraction
Na Sodium
K Potassium
Important for membrane function and water absorption
Cl
Chlorine
Required for the activation of several enzymes
Mg
Magnesium
Essential for oxygen transport and energy capture
Fe
Iron
A component of hormones of the thyroid gland
I
Iodine
Key Note
The number of electrons in an atoms outer electron shell determines the chemical properties of that element
Molecule
A chemical structure that contains more than one atom bonded together by shared electrons
Compound
A chemical substance made up of atoms of two or more elements
Cations
Have a positive charge
