Page 52 - CHAPTER 1 DIGESTION SYSTEM (2).pptx (Ebook Cover)

CHAPTER 2
2.2 Nutrient: protein, carbohydrate, fat, vitamin and mineral
Functions of Protein

HAIR & NAILS BLOOD
A protein called alpha-keratin The hemoglobin protein carries
forms your hair and fingernails, oxygen in your blood to every
and also is the major part of your body
component of feathers, wool,
claws, scales, horns and
hooves in animal.

MUSCLES
ENZYMES Muscle proteins called actin

Enzymes in your saliva, and myosin enable all
stomach, and small intestine muscular movement: from
are proteins that help you blinking to breathing to
digest food. running.

CELLULAR
BRAIN & NERVES MESSENGER

Ion channel proteins control Receptor proteins stud the
brain signaling by allowing outside of your cells and
small molecules into and out of transmit signals to partner
nerve cells. proteins on the inside of the
cells.

CELLULAR
ANTIBODIES CONSTRUCTION

Antibodies are proteins WORKERS
that helps defend your Huge clusters of proteins form
body against foreign molecular machines that do
invaders, such as your cells' heavy work, such as
bacteria and viruses copying genes during cell
division and making new
proteins.
NUTRITION AND HEALTH 2023
Chapter 1 & 2 44