Answer:
The addition of new bone tissue is termed as bone remodeling. In the process of bone remodeling, the tissues of the bone are withdrawn or resorbed from the skeleton and the formation of new bone tissue takes place also known as ossification. The mentioned procedures also monitor the shape of the bones after the incidents like fractures.
In the process of bone remodeling, two types of cells play an essential part, that is, osteoblast that generates new bone and osteoclasts that dissociates a bone. In the process of bone remodeling, the resorption of the bone takes place by osteoclasts, which is succeeded by bone deposition by osteoblasts. In combination, the cells, which are accountable for bone remodeling are called BMU or basic metacellular unit.
Explanation:
A radioactive decay is defined as the process where an unstable nuclei of an atom loses energy by releasing particles like alpha or beta particles.
For example, 
Here, 
is an alpha particle. This shows that above radioactive decay has released alpha particle along with release of energy.
When we show this radioactive decay diagrammatically then arrows are used to depict the release of energy and particles.
Thus, we can conclude that the arrows in the diagram represent energy and particles.
Answer:
The ribosomes within a prokaryotic cell are much larger than the ribosomes within a eurkaryotic cell.
Explanation:
Eukaryotic cells are generally much larger and more complex than prokaryotic. Because of their larger size, they require a variety of specialized internal membrane-bound organelles to carry out metabolism, provide energy, and transport chemicals throughout the cell.
