Proteins are composed of amino acid molecules and contain carbon, hydrogen, oxygen, and nitrogen. They perform important functions in the body like building cells, producing antibodies and enzymes, carrying oxygen via hemoglobin, and providing energy. Common food sources of protein include meat, fish, milk, cheese, peas, beans, and tofu. Proteins can be soluble or insoluble in water and are used to make new cells, antibodies, and hemoglobin.

1. Proteins
Group: Sol Lombardini, Pilar Diehl, Carolina Seoane y Candela
Valcárcel
Magdalena Ravagnan

2. proteins
The smallest molecules
of wich they are made:
amino acids molecules
Elements they contain: C, H,
O, N
Their functions in the body
are: making cells, antibodies,
enzymes, haemoglobin and
providing energy
Some food that
contain them are
meat, fish, milk,
cheese, peas, beans
and tofu
Solubility in water: some are
soluble and some are
insoluble

3. What are amino acids?
•Protein molecules are made of long chains of smaller molecules
joined end to end, these smaller molecules are called amino acids

4. What are the functions of proteins in
the body?
• Proteins are not usually used to provide energy, many of the proteins in the food
you eat are used for making new cells. New cells are used for growing, and for
repairing damaged parts of the body, in particular, cell membrane and cytoplasm
contain a lot of protein. Proteins are also needed to make antibodies and produce
more haemoglobin.
•
antibody
energy
haemoglobin

5. Food that contain proteins