Food Classification
Factor that Influence a Person's needs for a Balance Diet
ⅰ) Sex :
Men requiring more energy than women at the same age and body size because men are more active
ⅱ) Age:
Babies, children and teenagers require more energy because they more active and they life
process are faster
ⅲ) Body sized :
Big sized individuals require more energy compared to small sized individual
ⅳ) Physical Activity :
Individual with heavy work use more energy compared to another who does light work
ⅴ) Weather :
Individuals living in place with cold weather require more energy compare in
place with warm weather
Human Digestive System
- Digestion take place in two stage :
ⅰ) physical digestion ➯big pieces of food are broken down into smaller pieces
by teeth
ⅱ) chemical digestion➯enzymes break up complex food molecules into smaller
molecules
- Enzymes are protein that speed up the process of digestion. Enzymes break up complex food molecules to smaller and simple molecules
✱ Characteristic of enzymes
a) enzymes are small quantities only
b) enzymes are not destroyed at the end of digestion
c) specific enzymes act only in specific acidic or alkaline conditions
d) specific enzymes act only on specific foods
e) enzymes function best at normal body temperature (37℃)
f) enzymes are destroyed at high temperature
