Question

what process does the model below show? *
cellular process
maternal
paternal
the cell cycle
cellular respiration
photosynthesis
meiosis
before a cell can proceed to mitosis from the gap 2 stage of the cell cycle, *
it must _.
undergo cytokinesis.
pass a critical checkpoint.
complete a full cell cycle.
double in size.

Explanation:

• First question: The model shows stages of cell division where chromosomes are involved. The cell cycle includes interphase (where cell prepares) and mitosis (nuclear division). The given model represents the cell cycle as it shows sequential stages of cell preparation and division.
• Second question: In the cell cycle, before a cell proceeds to mitosis from the Gap 2 ($G_2$) stage, it must pass a critical checkpoint ($G_2 - M$ checkpoint). This checkpoint ensures that DNA is replicated correctly, cell size is adequate, and there are enough nutrients and energy for mitosis. Cytokinesis occurs after mitosis. Completing a full cell cycle is not relevant as the cell is moving from $G_2$ (part of interphase) to mitosis. Doubling in size is part of the $G_1$ stage (growth 1) in a general sense and not the specific requirement for proceeding from $G_2$ to mitosis.

Answer:

• First question: The Cell Cycle
• Second question: pass a critical checkpoint