Cell Cycle Concepts and Phases

The video tutorial explains the cell cycle, a biological clock that starts when a new cell forms and ends with its division into two daughter cells. It consists of two main stages: interphase and mitosis. Interphase is divided into G1, S, and G2 phases, where the cell grows, duplicates its DNA, and prepares for division. Mitosis is the final phase where cell division occurs. The video also discusses the variability in cell cycle duration among different cell types and organisms. The tutorial concludes with a call to action for viewers to engage with the content.

What is the primary function of the cell cycle?

• To regulate cell division

• To synthesize proteins

• To maintain cell size

• To produce energy

During which phase does the cell primarily grow and prepare for DNA replication?

• G1 Phase

• M Phase

• S Phase

• G2 Phase

What happens during the G0 phase?

• The cell divides

• The cell exits the cycle and stops dividing

• The cell duplicates its DNA

• The cell prepares for mitosis

In which phase does DNA replication occur?

• M Phase

• G2 Phase

• S Phase

• G1 Phase

How long does the S phase typically last?

• 1 hour

• 8 hours

• 4 hours

• 11 hours

What is the main activity during the G2 phase?

• Cell division

• Preparation for mitosis

• DNA replication

• Cell growth

Which phase involves the actual division of the cell?

• M Phase

• G2 Phase

• S Phase

• G1 Phase

How long does the M phase typically last?

• 1 hour

• 11 hours

• 4 hours

• 8 hours

Which cells have a different cycle duration compared to others?

• Nerve cells

• Blood cells

• Muscle cells

• Skin and nail cells

What is a key factor that can vary the duration of the cell cycle?

• The presence of water

• The temperature

• The amount of sunlight

• The type of organism