The body determines whether certain genes should be expressed or not. sometimes genes are only
turned on once or twice in a lifetime. which example best illustrates this point?
milk-producing hormone after childbirth
insulin after eating
adrenaline when scared or in danger

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.