Transcript question #5

By: Wajiha Yassin, Matt Doll, Haley Garrison

What other elements are commonly
associated with each of these four types of
macromolecules??
Carbohydrates
Always
contains P
Usually
contains no P
Always
contains N
Usually
contains no N
Often contains
S
Rarely
contains S
Lipids
Proteins
Nucleic Acids

Nucleic acids always contain phosphorus
because they have phosphate groups as part
of their composition,composed of
phosphorous and oxygen. The phosphate
groups are needed for the bonds that link the
nucleotides together.



Carbohydrates don’t contain P, N,
or S because…
Proteins do not usually contain phosphorus because
they are made of amino acids which are composed of
carbon, hydrogen, and oxygen.
Lipids do not usually contain phosphorus because
they are either triglycerides or phospholipids, in
which one of the fatty acid chains in a triglyceride
has been replaced by a phosphate. This is an
example where phosphorous can be used.
Triglyceride
Phospholipid


Proteins always contain nitrogen because
proteins are made of amino acids and amino
acids have nitrogen.
Nucleic acids always contain nitrogen
because nucleic acids consist of three parts,
one of which is a nitrogen base. The other
two parts are a sugar, which is made up of
carbon, hydrogen, and oxygen, and a
phosphate group,
made up of oxygen
and phosphorus.

Proteins often contain sulfur because amino
acids make up proteins and cysteine, an amino
acid, has a sulfur in it. Also, the sulfur in
cysteine allows the protein to form strong
disulfide bonds in the tertiary structure of the
protein to create links.
Cysteine