Name:
.
IB Assessment Statement:
 Compare the energy content per 100g of carbohydrate, fat, and protein.
 Explain the possible health consequences of diets rich in proteins, fats,
carbohydrates
 Compare the main dietary sources of energy in different ethnic groups.
 Outline the function of the appetite control center in the brain
Instructions:
High Protein food (tuna):
1. Calculate the percent calorie (energy) content of fat (show work below)
Answer
.
2. Calculate the percent calorie (energy) content of protein (show work
below) BY WEIGHT
Answer
.
Explain the possible health consequences of diets rich in proteins.
High Carbohydrate Food (Cookies)
1. Calculate the percent calorie (energy) content of fat (show work below)
Answer
.
2. Calculate the percent calorie (energy) content of carbohydrate (show
work below) BY WEIGHT
Answer
.
Explain the possible health consequences of diets rich in carbohydrates.
High Fat Food (Chip)
1. Calculate the percent calorie (energy) content of fat (show work below)
Answer
.
Explain the possible health consequences of diets rich in fats.
Energy content (kilojoules) per 100g of protein, carbohydrate, fat
Food molecule
Energy Content(kj) per 100 grams
Fat
Proteins
Carbohydrates
Below calculate the percent difference between the energy content of a 100
grams of fats and the energy conent difference in 100 grams of
carbohydrates.
Ethnic Groups & Energy Sources. Below identify four different ethnic groups &
State their energy sources.
Ethnic Group
Energy Source
1.
2.
3.
4.
Appetite Control:
Appetite control is regulated by a combination of feedback loops from the central
nervous system, the digestive system and the endocrine system. Show your
understanding of the appetite control by making a flow chart of these feedback
loops. In your flow chart be sure to include the following hormones, endocrine
glands, tissues, sensations:
 Empty—not eaten for awhile
 Recently ingested food
PYY3-36 Hormone released

 Pancreas
 Brain (hypothalamus gland)
 Inhibitory Neurons (suppresses appetite)
 Stimulatory Neurons (increases appetite)
 Ghrelin hormone released
 Insulin
 Carbohydrate uptake in liver cells
 Leptin hormone is released from adipose tissue
 Feel full (satiated)
 Feel empty (hungry

Tuna Can
Cookies
Chips