1. What name can be given to glucose, fructose and galactose?
2. It is widely known that the building blocks of proteins are amino acids. What reaction allows several amino acids to join together to form a protein?
3. Many people talk about "good" and "bad" fats. What must a fat contain to be classed as a "good" fat?
No C=C double bonds
At least one C=C double bond
A hydrocarbon chain longer than 100 carbons
A hydrocarbon chain shorter than 100 carbons
4. When using Biuret's test, which macromolecule will produce a positive reaction (colour change from blue to lilac)?
5. After eating proteins, fats or carbohydrates, they must be digested as they are large insoluble molecules and so cannot be absorbed into the blood stream. Enzymes catalyse the breakdown of these molecules into smaller soluble molecules. Which macromolecule would be most likely to bind with endopeptidase?
None of these
6. Once digested, fats, proteins and carbohydrates eventually enter the bloodstream. Which of the following recombine to form chylomicrons in epithelial cells of the small intestine before eventually entering the bloodstream via the subclavian vein?
Fatty acids and glycerol
7. Which macromolecule's functions include insulation, waterproofing, energy storage and shock absorption?
8. Which carbohydrate is a long unbranched chain of beta-glucose molecules, which is indigestible to mammals?
9. Animal cell membranes are mainly composed of a phospholipid bilayer. What happens to a triglyceride to form a phospholipid?
Gain of two organic phosphates
Gain of two inorganic phosphates
Loss of one fatty acid and gain of one inorganic phosphate group
All three fatty acids replaced by inorganic phosphates
10. There are 20 naturally occurring amino acids and the many combinations of these monomers gives rise to a huge number of proteins, all with different functions. One use of proteins in the human body is as enzymes. Which of these bonds holds an enzyme in its tertiary structure?
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