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the number of unpaired electrons in an atom is its?
When the outer shell is full of electrons and the atom is content and unreactive the atom is?
When the outer shell is not full, is unstable and looking for fulfillment the atom is?
except for the first shell which is full with two electrons, atoms interact in a manner to have eight electrons in their valence shell
living together in the same space
Covalent bonds are formed by?
an atom that has a charge
weak attractions between opposite partial charges are?
the measure of an atoms ability to attract electrons is called?
materials that dissolve easily in water are?
what best describes the atoms of the top four elements?
they are reactive - looking for fulfillment, outer shell not full
what are the four groups of organic macromolecules?
- nucleic acids
molecules unique to living systems containing carbon are?
The most versatile atom on earth is?
How many amino acids do we know are used in biological systems?
Strings of amino acids are called?
What is the monomer of Carbohydrates?
Monosaccharide (simple sugar)
Functions of Carbohydrates
- Energy storage
- structure (chitin)
- Signaling (tells sells what they are)
two major types of lipids?
Isoprene and Fatty Acid
What are lipids mostly made up of?
Carbon Chains and hydrogen
What are the two types of Fatty Acid Lipids and their structures?
- Saturated - single bonds, solid at room temp, found commonly found in animals
- Unsaturated - have some double bonds, oil at room temp, found in plants
Means different parts of the molecule have different properties
Carbohydrate in a lipid
Means that only certain things can cross a membrane
Movement of substances against the gradient, low to high concentration
Cells are the smallest units of living organisms
All organisms are made of cells
all cells come from preexisting cells
Positively charged ions are called
Negatively charged ions are called?
What type of covalent bond has a partial charge?
When electrons are shared equally or symmetrically what type of covalent bond is formed?
Non polar covalent
A bond that is formed when there is complete transfer of electrons
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