Exam Questions Flashcards
1
Q
Using your knowledge of water potential suggest why lactulose can be used to help people from suffering from constipation
A
Lactulose lowers the water potential of small intestine which causes water to enter the lumen of the small intestines by osmosis. This allows the faeces to soften and pass through easier, preventing constipation
2
Q
Raffinose is a trisaccharide of three monosaccharides: galactose, glucose and fructose
The chemical formula of these monosaccharides are:
Galactose: C6H12O6
Glucose: C6H12O6
Fructose: C6H12O6
Give the number of carbon atoms, hydrogen atoms and oxygen atoms in a molecule of raffinose
A
Number of carbon atoms: 18
Number of hydrogen atoms: 32
Number of oxygen atoms: 16
