Learning Task 1: Choose the letter of the correct answer. Write your answers on a
separate sheet of paper.
1. Organisms use
as energy sources, structural units, and for other
purposes and are the largest class of organic compounds found in organisms
A carbohydrates B. lipids C. protein
D. mucleic acid
2.
are the molecules in our cells that direct and store information for
reproduction and cellular growth
A carbohydrates B. lipids C. protein
D. nucleic acid
3
are used for energy storage, to build structures, and as signal
molecules to help cells communicate with each other.
A carbohydrates
B. lipids C. protein
D. nucleic acid
4. They are used to build structure, catalyze biochemical reactions, for immune
response, to package and transport materials, and to help replicate genetic
material​