AP BIOLOGY

Detailed explanation-1: -This continued growth often results in a tumor (a cluster of cancer cells) being formed. normal cell processes before dividing. Cancer cells spend less time in interphase and reproduce rapidly before the cells have had a chance to mature. cells “hear” these signals they stop growing.

Detailed explanation-2: -Unlike healthy cells, cancer cells don’t carry on maturing or become so specialised. Cells mature so that they are able to carry out their function in the body. This process of maturing is called differentiation. In cancer, the cells often reproduce very quickly and don’t have a chance to mature.

Detailed explanation-3: -Cancer cells avoid, in a way, entering the G0 phase because they are genetically modified to divide faster. Therefore, cancer cells might shorten, or skip all together, the G0 phase. What this implies is that cancer cells divide faster than they should since they don’t remain in the G0 phase as long as they should.

Detailed explanation-4: -The cell grows at a steady rate throughout interphase, with most dividing cells doubling in size between one mitosis and the next. In contrast, DNA is synthesized during only a portion of interphase. The timing of DNA synthesis thus divides the cycle of eukaryotic cells into four discrete phases (Figure 14.1).

Detailed explanation-5: -The cell usually spends most of its time in interphase and spends a very small amount of time in actual cell dividing phases. However, cancer cells are in a rapid state of cell division and spend much more time out of interphase.