There are many different ways that cells can connect to each other. The three main ways for cells to connect with each other are: gap junctions, tight junctions, and desmosomes. These types of junctions have different purposes, and are found in different places.
According to the evolution theory, the first insects appeared about 400 million years BC in the Devonian Period.
D-walls and doors would represent the cell membrane
Answer:
The cell cycle is the cycle of which the cells grow and split. The cell cycle consists of two main phases, interphase and mitosis. In interphase, the cell grows and duplicates its DNA to prepare for mitosis. In the phase of mitosis, the cell splits its DNA into two nuclei and is split.