Answer:
S-Phase
Explanation:
S-Phase is when DNA synthesis/DNA Replication occurs
Answer:
The form of cell to cell signalling that is been used is ENDOCRINE.
Explanation:
There are four ways by which cell signalling occur in the body, these are: endocrine, paracrine, autocrine and direct signalling.
Endocrine signalling is the biochemical process by which hormone secreting glands release hormones into the blood streams and that hormone has effects on target organs that are located far away from it. Endocrine hormones are usually stable and their effects usually last for long time.
It’s a term for molecules present in organisms that are essential to one or more typically biological processes, e.g. cell division.
The hollow bones of birds which keep birds light weight for flying is an example of adaptation. These hollow bones are also called pneumatized bones which mean they're filled with space for air.
Hope this helps!
