AP BIOLOGY

Detailed explanation-1: -G1 belong to interphase of cell cycle which is metabolically active stage. During G1 synthesis of ATP nucleotides, amino acids, RNAs and protein synthesis occur and growth of nucleus is observed.

Detailed explanation-2: -In G1, cells accomplish most of their growth; they get bigger in size and make proteins and organelles needed for normal functions of DNA synthesis. Here, proteins and RNAs are synthesized, and, more especially the centromere and the other components of the centrosomes are made.

Detailed explanation-3: -During G1 phase, the cell grows in size and synthesizes mRNA and protein that are required for DNA synthesis. Once the required proteins and growth are complete, the cell enters the next phase of the cell cycle, S phase. The duration of each phase, including the G1 phase, is different in many different types of cells.

Detailed explanation-4: -Final answer: Cell is metabolically active, grows but does not replicate its DNA is the correct statement.

Detailed explanation-5: -The G1 phase is often referred to as the growth phase, because this is the time in which a cell grows. During this phase, the cell synthesizes various enzymes and nutrients that are needed later on for DNA replication and cell division.