A certain substance is used for insulation by animals in cold climates, as well as for long term energy storage. A similar molecule makes up the cell walls of animals. This must be a:

This question lacks options, however, it can be answered. The answer is LIPIDS

Explanation:

Lipids are one of the four biological molecules found in living systems. They are found performing variety of functions in living organisms. Lipids include the following: fats, phospholipids, steroids, oils, waxes etc. Some of the function they perform as mentioned in this question are:

- Lipids such as fats are used for long term energy storage.

- In cold climates, lipids such as fats also provides insulation in animals, helping their bodies to conserve heat.

- Lipids such as phospholipids encompass the cell membrane of animals, where they perform the role of selective permeability.

answer; ///(b) it is composed of four protein chains and four heme groups;