Cell Cycle Phases and Functions

The video tutorial explains the stages of interphase in the cell cycle, focusing on the G1, S, and G2 phases. It details the events occurring in each phase, such as cell growth and DNA replication. The tutorial also compares the G1 and G2 phases, highlighting differences in cell size and mitochondria content. Additionally, it covers metaphase, describing chromosome alignment and separation. The video concludes with resources for further study.

What are the three main parts of interphase?

• Synthesis, Growth, and Division

• G1, S, and G2

• Mitosis, Cytokinesis, and G1

• Prophase, Metaphase, and Anaphase

During the G2 phase, which of the following occurs?

• Chromosome separation

• Cell division

• Protein synthesis

• DNA replication

How does a cell in the G2 phase differ from a cell in the G1 phase?

• It is smaller

• It has more mitochondria

• It has less DNA

• It undergoes mitosis

Which phase is responsible for DNA replication?

• S phase

• G1 phase

• Metaphase

• G2 phase

What happens during the G1 phase of the cell cycle?

• Cell growth

• DNA replication

• Chromosome alignment

• Cell division

Which phase follows the S phase in the cell cycle?

• G1 phase

• Anaphase

• G2 phase

• Metaphase

What is the primary event during the S phase?

• Chromosome separation

• Cell growth

• Protein synthesis

• DNA replication

In which phase do chromosomes align at the cell's equator?

• Metaphase

• Prophase

• Anaphase

• Telophase

What is the role of spindle fibers during metaphase?

• To replicate DNA

• To synthesize proteins

• To attach to centromeres and pull chromatids apart

• To divide the cell

During which phase is the amount of DNA doubled in preparation for cell division?

• G1 phase

• Metaphase

• S phase

• G2 phase