PROTEINS ....... needed for BODY-BUILDING
STRUCTURE:
made from
Long chains of AMINO ACIDS
there are 20 amino acids
divided into 2 types: (BOTH types are essential for LIFE)
ESSENTIAL
amino acids
NON-ESSENTIAL
amino acids
the ONLY way the body can get these is THROUGH the DIET i.e. by EATING




9 out of the 20
the body can get these in 2 different ways: by
SYNTHESISING (making) them OR THROUGH the DIET
i.e. it is Not essential to get them by EATING
11 out of 20
FUNCTION:
Provides the materials/substances the body needs to:
grow,
develop,
repair injuries/wounds
replace old cells/tissue
SOURCES:
COMPLETE PROTEINS
INCOMPLETE PROTEINS
foods containing ALL the 9 ESSENTIAL amino acids
e.g.
meat
fish
eggs
cheese
milk
foods missing some of the 9 ESSENTIAL amino acids
e.g.
legumes
nuts
wholegrain