its time for life Flashcards
Write the word equation for aerobic respiration
glucose + oxygen -> carbon dioxide + water + (energy)
From which system does the body obtain glucose for respiration?
The digestive system
In which part of our cells does respiration mainly occur?
In the mitochondria
What are the products of respiration?
Carbon dioxide, water
How do we test for carbon dioxide?
Bubble through limewater; the limewater turns cloudy.
The word “aerobic” indicates the presence of which gas?
Oxygen
Which unit is energy usually measured in?
joules, J
How many joules are there in 1 kilojoule?
1000J
What is the symbol for kilojoule?
kJ (lower case k, capital J)
If a food is high in energy, which nutrient/s is it likely to contain?
Lipids/fats, carbohydrates
List the 7 nutrients needed by the human body
carbohydrates, proteins, lipids, vitamins, minerals, water, fibre
Foods high in which group help repair muscles?
Protein
Why is fibre needed in our diet?
Add bulk to food to help it pass through the digestive system; prevents constipation
