NEET BIOLOGY

Detailed explanation-1: -Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.

Detailed explanation-2: -G2 is the shortest phase of interphase. It is when organelles and proteins necessary for cell division are produced. The cell requires a bunch of proteins and other stuff to separate the chromosomes and divide the cell in half. All of these materials are produced during G2.

Detailed explanation-3: -In G1 phase, there is the synthesis of RNA, enzymes, proteins, amino acids for histone formation, the formation of nucleotides and ATP. During S phase, the DNA is duplicated. During G2 phase, there is again intense synthesis of proteins and RNA. After completion of interphase, mitotic phase begins.

Detailed explanation-4: -G2 (Gap 2), in which the cell resumes its growth in preparation for division. The mitochondria divide and the cell continues to grow until mitosis begins. In plants, chloroplasts also divide during G2.

Detailed explanation-5: -During interphase, G1 involves cell growth and protein synthesis, the S phase involves DNA replication and the replication of the centrosome, and G2 involves further growth and protein synthesis. The mitotic phase follows interphase.