Macronutrients- Fats and Carbohydrates Flashcards
What is the function of fat in the diet?
Keep us warm
Protection of vital organs
Enable fat soluble vitamins to work
What is the scientific term for fats?
Tri-glyceride
What is a tri-glyceride made up of?
3 fatty acid chains and 1 glycerol chain
Why is lard not suitable for vegans?
Lard comes from pigs, vegans do not eat animal products
Outline two health risks associated with lack of fat in the diet
Weight loss
Fat-soluble vitamins won’t be absorbed
A person might be colder
Identify two sources of saturated fats
Animal fats-
lard/butter etc
Identify two sources of unsaturated fats
Plant based-
Margarine/ oil etc
What is the difference between unsaturated and saturated fats?
Saturated fat chains have all been taken up with carbon atoms (they are full, or saturated), however unsaturated fats only contain one double C-C bond
Glucose and fructose are the names of a basic sugar molecule, what is the scientific term for these?
Monosaccharide
Starch is a form of carbohydrate, true or false?
True
Identify two foods that are classed as starchy carbohydrates
Potatoes, bread, pasta, rice etc
Give one reason why we need starchy foods in our diets
To give us a primary source of energy
Some foods give us ‘empty calories’, what does this mean?
They are high in calories, but provide us with no nutritional value
What is a GI rating?
Glycemic Index
What does a high GI food mean?
Foods that have a high GI are ones that are high in carbohydrates and sugars
