Answer:
first one is c and the second is d.
Explanation:
<em>G1, S and G2 phases are all cumulatively referred to as interphase involving the growth of a cell and the replication of its DNA. Initially in G1 phase, the cell grows physically and increases the volume of both protein and organelles. In S phase, the cell copies its DNA to produce two sister chromatids and replicates its nucleosomes. Finally, G2 phase involves further cell growth and organisation of cellular contents. The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells. The S phase only begins when the cell has passed the G1 checkpoint and has grown enough to contain double the DNA. S phase is halted by a protein called p16 until this happens.</em>
Answer:
James Watson and Francis Crick with their DNA model at the Cavendish Laboratories in 1953.
Explanation:
The injury to Kevin’s right cerebral hemisphere could affect
the strength and movement on the left side of his body, as the right half of
the brain controls the left side and vice versa. Reasoning, attention, perception,
social communication and memory are also controlled by the right side of the
brain and these functions could also be impaired from an injury to his right
cerebral hemisphere.
Cells divide for many reasons. For example, when you skin your knee, cells divide to replace old, dead, or damaged cells. Cells also divide so living things can grow. ... Organisms grow because cells are dividing to produce more and more cells.
