p53 protein is involved in control of cell cycle, which explains it role in tumor/ cancer suppressor
Answer:
Cell, tissue, organ, organ system.
Explanation:
Cell is the structural and function unit of the living system. All living organisms are made of cell. Two main types of organisms are unicellular organism and multicellular organism.
Cell is the smallest unit. Cell will combine together and perform a unique function known as tissue. Similar tissue combine together to form a particular organs. Different organs combine together to form the organ system in the living organism.
Thus, the correct answer is option (b).
Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Root absorbs water and anchor the plant in soil
A. Hydrogen ..................
