What is the result of a cell not meeting the criteria to pass the g 1 checkpoint? the cell cycle halts. the cell may enter the g0 stage the cell may undergo apoptosis. all of the above. a and b only.

A and B only

Explanation:

At the G1 checkpoint the cell checks that the cell being divided is the right size and has enough energy reserves to complete the cycle, the cell also checks if there is damage to the DNA. If the cell does not meet the correct standards, the cell cycle halts for a possible fix of the problem or cell could enter the G0 stage where it awaits further instructions.

If the cell passes the G1 checkpoint it is fully committed to the process of cell division and can not reverse the process.

i believe it would be the lungs.