AP BIOLOGY

Detailed explanation-1: -Interphase is the phase of intense biochemical activity and prepares the cell for division. Three major processes during interphase are (a) replication of DNA and synthesis of nuclear proteins (b) duplication of centriole in animal cells (c) synthesis of energy rich compounds.

Detailed explanation-2: -G1 is followed by S phase (synthesis), during which DNA replication takes place. The completion of DNA synthesis is followed by the G2 phase (gap 2), during which cell growth continues and proteins are synthesized in preparation for mitosis.

Detailed explanation-3: -Interphase is the longest phase in a typical cell cycle. The interphase is comprised of first growth phase or G1 phase, synthesis phase or S phase and second growth phase or G2 phase. In G1 phase, there is synthesis of RNA, enzymes, proteins, amino acids for histone formation, formation of nucleotides and ATP.

Detailed explanation-4: -G1 (Gap 1) is the phase when the cell grows and functions normally. During this time, a large amount of protein synthesis occurs required for the DNA replication and the volume of the cytoplasm increases.

Detailed explanation-5: -During the cell cycle, RNA and protein synthesis takes place during the G1 and G2 phases. The cell cycle is an ordered set of events, culminating in cell growth and division into two daughter cells.