Why do cells not just continue to grow larger as organisms grow larger?
a) Because cells have a maximum size limit due to limitations in nutrient and waste exchange.
b) Because larger cells cannot efficiently carry out cellular functions.
c) Because cell growth is controlled by external factors.
d) Because larger cells are more susceptible to mutations. Why do cells divide?
a) To repair damaged tissues.
b) To increase the number of cells for growth and development.
c) To eliminate old or damaged cells.
d) To regulate metabolic processes.
What is the longest stage of the cell cycle called?
a) G1 phase
b) S phase
c) G2 phase
d) M phase. During what phase of the cell cycle is DNA replicated?
a) G1 phase
b) S phase
c) G2 phase
d) M phase
During what phase of the cell cycle does the cell grow?
a) G1 phase
b) S phase
c) G2 phase
d) M phase What are checkpoints, and why are they important? What is apoptosis?
a) Apoptosis is a process of cell division.
b) Apoptosis is a process of cell growth.
c) Apoptosis is a programmed cell death.
d) Apoptosis is a phase of the cell cycle.
Why would a cell undergo apoptosis?
a) To repair damaged DNA.
b) To increase in size.
c) To eliminate old or damaged cells.
d) To replicate its DNA.
