Biomolecules
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Which biomolecule contains glycosidic bonds?
Carbohydrates
What type of bond is found joining amino acids?
Peptide bonds
What biomolecules can be used for energy storage?
Carbohydrates and lipids
Describe the structure of a phospholipid (triglyceride) molecule
• Glycerol • Three fatty acids • Ester bond • Phosphate
Describe the two fatty acids in a triglyceride molecule
• Unsaturated - Containing less than the maximum number of H atoms
What molecule is this? What does it consist of? R | H2N - C - COOH | H
Amino acid • Amino group (H2N) • Carboxyl group (COOH) • 20 group ‘H’
Lipids are insoluble in H2O because they are:
Hydrophobic
What is lactose composed of?
Glucose and galactose
What is cellulose made up of?
Unbranched chain of glucose molecules linked by β 1,4 glycosidic bond
Which purine base is found in RNA?
Guanine
Amino acids are produced by:
Proteins
Name three polysaccharides:
Glycogen, cellulose and starch
What is the most common monomer of a carbohydrate
Glucose
Is cholesterol a steroid?
Yes, carried in the bloodstream by lipoproteins (LDL and HDL)
Which is a linear polysaccharide? • Glycogen • Starch • Cellulose
Cellulose
What type of test is used in determining the presence of carbohydrates?
Benedict’s reagent
Glucose is a …..
Monosaccharide
The three classifications of carbohydrates are:
Monosaccharide, disaccharide, and polysaccharide
Bad cholesterol refers to?
Low Density Lipoproteins, high levels of LDL cholesterol raise your risk for heart disease and stroke
Which class of lipids is a major component of cell membrane?
Phospholipids
What biomolecule do enzymes belong to?
Proteins
What are monomers and polymers?
Monomers are the smaller units from which larger molecules are made. Polymers are molecules made from a large number of monomers joined together
When does hydrolysis take place?
Digestion of carbohydrates
Benedict’s solution consists of:
Copper sulphate