#36- 4.2 The Cell Cycle

Front

What is the G2 checkpoint responsible for?

Back

The G2 checkpoint checks for DNA damage and ensures that DNA replication is complete before the cell enters mitosis.

Front

True or False: Regulatory proteins ensure that cells divide only when they receive signals to do so.

Back

True

Front

What does the G1 checkpoint check for?

Back

The G1 checkpoint checks for cell size, nutrients, growth factors, and DNA damage.

Front

What occurs during the G1 phase of the cell cycle?

Back

During the G1 phase, cells grow for the first time, carry out normal functions, and copy their organelles.

Front

What is the role of growth factors in the cell cycle?

Back

Growth factors are regulatory proteins that signal cells to divide only when conditions are favorable.

Front

What is the significance of the spindle checkpoint?

Back

The spindle checkpoint ensures that all chromosomes are properly attached to the spindle apparatus before the cell proceeds to anaphase.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA is replicated, resulting in two identical sets of chromosomes.

Front

What is the M phase in the cell cycle?

Back

The M phase is the mitotic phase where the cell divides its copied DNA and cytoplasm to form two new cells.

Front

What does the term 'cell cycle' refer to?

Back

The cell cycle refers to the series of events that take place in a cell leading to its division and duplication.

Front

What is the purpose of checkpoints in the cell cycle?

Back

Checkpoints are mechanisms that monitor the progression of the cell cycle and ensure that each phase is completed accurately.