food and energy Flashcards
Food:
provides the materials for energy, growth
and repair of tissues.
Calorie:
amount of energy needed to raise the
temperature of one gram of water by one degree
Celsius.
Metabolism:
represents the sum of all chemical
reactions that takes place within an organism.
Nutrients:
substances in food that provide the
raw materials and energy the body needs to
carry out all vital processes. There are six (6)
nutrients: carbohydrates, fats, proteins, vitamins,
minerals and water.
Human Body:
~ 60-75% water
Carbohydrates
: major source of quick
energy; provides the raw materials to
make parts of cells
Fats:
stored energy. Fats form part of the
cell membrane and fatty tissue protects
and supports your internal organs and
insulates your body. Brain Development
Protein:
needed for tissue growth and
repair/maintenance (ex: muscle).
Proteins play a role in chemical reactions
within the cell (= enzymes).
Vitamins and Minerals
Vitamins and Minerals are needed in
small amounts to carry out chemical
reactions.
Water
is important because the chemical
reactions take place in water; blood flows
due to water; joints lubricated by water;
body temperature is regulated by water
(perspiration/sweat).
Simple:
candy(refined white sugar), fruits
(fructose), milk (lactose)
Complex:
Breads, Rice, Pasta, Crackers