2. Cell Biology

Cell Cycle — Quiz

Test your understanding of cell cycle with 5 practice questions.

Practice Questions

Question 1

Which of the following is the most critical consequence of a prolonged activation of the spindle assembly checkpoint (SAC)?

Question 2

A cell in the G1 phase has a DNA content of $2C$. If this cell undergoes meiosis, what will be the DNA content of each cell after Meiosis I and after Meiosis II, respectively?

Question 3

Which of the following mechanisms is primarily responsible for the irreversible progression through the cell cycle, particularly the metaphase-anaphase transition?

Question 4

A cell experiences significant DNA damage during the S phase. Which of the following would be the most immediate and direct cellular response to this damage, involving specific checkpoint activation?

Question 5

Consider a mutation that causes a cyclin to be constitutively active, meaning it is always present and functional. If this mutation occurs in a cyclin that normally promotes entry into S phase, what would be the most likely consequence for the cell?