Download IB Topic 3

IB Topic 3
The Chemistry of Life
3.2
Carbohydrates,
Lipids, & Proteins
3.2.1 Distinguish between organic & inorganic compounds.
3.2.2 Identify from diagrams showing their structure: amino acids,
glucose, ribose, fatty acids.
3.2.2 Identify from diagrams showing their structure: amino acids,
glucose, ribose, fatty acids.
3.2.2 Identify from diagrams showing their structure: amino acids,
glucose, ribose, fatty acids.
fatty acids arrange
into micelles in water
3.2.3 List three examples each of monosaccharides, disaccharides
and polysaccharides.
• Monosaccharides
– glucose, galactose and fructose
• Disaccharides
– maltose, lactose and sucrose
• Polysaccharides
– starch, glycogen and cellulose
3.2.4 State one function of:
in animals--glucose, lactose, glycogen
in plants--fructose, sucrose, cellulose
3.2.4 State one function of:
in animals--glucose, lactose, glycogen
in plants--fructose, sucrose, cellulose
3.2.5 Outline the role of condensation and hydrolysis in the
relationships between
monosaccharides, disaccharides and polysaccharides; fatty acids,
glycerol and triglycerides; amino acids and polypeptides.
3.2.5 Outline the role of condensation and hydrolysis in the
relationships between
monosaccharides, disaccharides and polysaccharides; fatty acids,
glycerol and triglycerides; amino acids and polypeptides.
• CONDENSATION
– Monosacc + monosacc  disacch
– Glucose + glucose  maltose + water
• HYDROLYSIS (water, splitting)
– Reverse of the above rxns
• Add more monosacc 
polysacc,
more water molecules
Equations
w/words
OR
chemical
formulas!
3.2.5 Outline the role of condensation and hydrolysis in the
relationships between
monosaccharides, disaccharides and polysaccharides; fatty acids,
glycerol and triglycerides; amino acids and polypeptides.
3.2.5 Outline the role of condensation and hydrolysis in the
relationships between
monosaccharides, disaccharides and polysaccharides; fatty acids,
glycerol and triglycerides; amino acids and polypeptides.
• CONDENSATION
Amino acid + amino acid  dipeptide +
water
• HYDROLYSIS (water, splitting)
Reverse of the above rxn
3.2.6 State 3 functions of lipids.
3.2.7 Compare the use of carbohydrates and lipids in energy
storage.
3.2.7 Compare the use of carbohydrates and lipids in energy
storage.