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Describe the types of bonds within a water molecule and between
different water molecules.How/why are these bonds important?
- Polar covalent bonds: O is more electronegative than H, O is
on the top with 2hydrogens coming out on the bottom
- Hydrogen bonds: the slight positive charge on the H atom of one
water molecule attracts the slight negative charge on the O of a
neighboring water molecule—based onpolar covalent bonds
Class
of
Molec
ule
Building Blocks
(Monomers)
Bonds formed Functions and
examples
Lipids (fats) glycerol
long strand of H-C bonds
saturated is all single
bonds unsaturated is bent
with at least 1double bond
Storage for
energy,
components of
cell membranes,
fat soluble
vitamins
Nucleic Acids nucleotide
phosphate group, sugar
(pentagon), and
nitrogenous base-A,C,G,T
(in DNA) or U (in RNA)
Store and
transfer
genetic
information
Carbohydrat
es
Simple sugar
(monosacchar
ide)
Monosaccharide: one
hexagon, disaccharide: 2
hexagons, polysaccharides:
multiple hexagons
Provide the body
withenergy
Proteins Amino acid
Amino group on the left
(NH2 or NH3), carboxyl
on the right (COO or
COOH), R group in the
middle
Do most of the
workwithin the
cell
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