The maximum probable speed of walking is restricted mainly by two factors, that is, the length of the leg and the free fall acceleration. The animals with longer legs exhibit higher maximum walking speed, while the animals with very short legs exhibit low maximum walking speed.
The large birds like pheasants usually walk brief distances, however, birds like chickadees never walk. In the case of pheasants, they exhibit a higher maximum walking speed, on the other hand, the chickadees exhibits a low maximum walking speed. Thus, the chickadees should never walk, they should fly or hop.
Also, more energy is utilized in flying than in walking. Therefore, large birds like pheasants usually walk brief distances so that energy can be saved.
An increase in genetic variation
Answer:
Acquired (or somatic) mutations occur at some time during a person's life and are present only in certain cells, not in every cell in the body. These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division.
Explanation:
Answer:
Option B = Lipids
Explanation:
Lipids include waxes, fats, steroids and oils. These are found in both eukaryotes and prokaryotes. Lipids play important role of energy storage, membrane formation, cell division and protection.
Structure of lipids:
Lipids are made up of triglyceride which are further consist of fatty acids and alcohol glycerol. Because of great diversity more than 10,000 lipids are discovered. Lipids are smaller than the protein.
Example:
Fatty acids are the lipids and act as a building blocks for other kind of lipids. The carboxyl group (-COOH) in fatty acids attached to the carbon chain trough attached hydrogen and make the chain water soluble. There are two kinds of fatty acids saturated and unsaturated. The saturated fatty acid has single bonds and unsaturated fatty acids have double bonds. The unsaturated fatty acids yield oils when combine with triglycerides.
Function of lipids:
Lipids play important role in organism. Some are important roles are given below:
1. They make protective barrier.
2. They take part in the formation of cell wall of plants and cell membrane.
3. They are also act as an energy storage device.
4. They take part in the formation of Golgi apparatus, nuclear envelop and other cellular compartments.
5. They provide the insulation against harsh environment to the vital organs
