chapter 1 Flashcards
1.1 Nutrients in Food
De you feel hungry looking at the difterent types of food in the
photograph on the previous page? Feeling hungry isa sign a that ou
bodies need food. Our bodies depend on food to give us enetgy to
move around and carry out mportant hte processes
Food provides us with:
energy to do work
bodies:
of damaged cells;
the materials needed for the growth of new cells and the repar
diseases
substances that our bodies need for health and resisting
carbotydrates
Food stores energy and contans nutnents which are essen:i
oRr bodies. The ditferent types of nutients in food may
classified as follows:
Tfats
prote
fibre
and cary out the vital
Vitains.
functions in our
Amincals
water.
Carbohydrates
Most Ivpes of food contain a mix of different nutrients. However.
certain types of food are richer in particular nutrients than
others.
Carbohydrates supply our bodies with most of the energy that
we need. Carbohydrates are compounds made up of the elements
carbon
hydrogen and oxygen. Carbohydrates include sugars and
complex carbohydrates. Sugars include simple sugars such as
glucose and fructose
and complex sugars such as lactose (from
milk)
maltose and sucrose (cane sugar). Cellulose
up plant cell walls
and starch are complex carbohydrates.