Interphase

What is Interphase?

-Interphase is the longest phase in the cell cycle.

-accounting for about 90 percent of the cell’s life.

- It occurs before a cell enters the mitotic phase.

What are the main activities and characteristics of the cell during Interphase?

-the cell grows by producing proteins and cytoplasmic organelles

-duplicating the chromosomes

- preparing for cell division.

What are the three main phases of Interphase?

The three phases of interphase are:

1. G1 Phase (First Gap Phase)

2. S Phase (Synthesis Phase)

3. G2 Phase (Second Gap Phase)

Describe the key events and duration of the G1 Phase (First Gap Phase) of interphase.

-synthesis of lipids, carbohydrates, proteins, and enzymes (needed for DNA replication) occurs.

-Cytoplasmic organelles such as mitochondria and ribosomes also increase,

-the volume of cytoplasm grows

-cells increase in size.

-usually lasts about 5-6 hours.