Biological Molecules 1

What is the function of carbohydrates?

• immediate energy

• long term energy

• cell repair

• cell growth

Fats are made up of fatty acids and ________

What is the function of fats?

• Immediate energy

• Long term energy

• Repair cells

• Growth of cells

If the yellow and blue circles in this diagram represent amino acids, then this whole structure represents

• a protein

• a fat

• a reducing sugar

• a simple carbohydrate

• None of these

Which of the following is a function of proteins?

• make enzymes

• make hormones

• provide energy

• make antibodies

Which of the following are made of glucose?

• Starch

• Glycogen

• Glycerol

• Cellulose

The diagram shows cells from a storage organ of a plant.

The structures X are stained blue-black by iodine solution. (Hint: Plants photosynthesise to produce glucose. Excess glucose is stored as _____?)

What does X contain?

• glycogen

• starch

• fat

• amino acids

What biomolecules does Benedict's test test for?

• reducing sugar

• starch

• fats

• proteins

What test is needed to test for protein?

• Benedict's test

• biuret test

• ethanol emulsion test

• iodine test