B3 - Organisation and the digestive system Flashcards
All things are made up of…
basic building blocks called cells
similar cells sometime work together to…
form tissues
tissues have
specific functions
organs are made up of
different types of tissue grouped together to perform specific functions
organs work together in
organ systems to perform a particular function in the body
organ systems work together to
form whole organisms
different types of carbohydrates include
simple sugars and complex carbs
an example of a simple sugar is
glucose
an example of a complex carb is
starch
proteins are made up of
long chains of amino acids
lipids are made up of
fatty acids and glycerol
fats and oils are
lipids
Test for sugar and colour change
- Benedict’s solution
- orginally blue
- goes brick-red after heating if sugar is present
- (other colours are possible depending on amount of sugar - yellow, green, orange, brown)
test for starch and colour change
- iodine
- orginally orange-brown
- changes to blue-black if starch is present
test for protein and colour change
- biuret solution
- originally blue
- turns purple if protein is present