Physiology has several topics, most of which consider the function of specific organ systems. 2. Physiology often focuses on cellular and molecular events. ... The principle of complementarity of structure and function states that function is dependent on structure, and that the form of a structure relates to its function.
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G1 phase. Metabolic changes prepare the cell for division. At a certain point - the restriction point - the cell is committed to division and moves into the S phase.</span><span>
S phase. DNA synthesis replicates the genetic material. Each chromosome now consists of two sister chromatids.</span><span>
G2 phase. Metabolic changes assemble the cytoplasmic materials necessary for mitosis and cytokinesis.</span><span>
M phase. A nuclear division (mitosis) followed by a cell division (cytokinesis).</span></span>
The period between mitotic divisions - that is, G1, S and G2 - is known as interphase.
The study of earthquakes is seismology. Scientists (seismologists) use instruments to record the strength of earthquakes in an area. The instrument that is used to measure seismic waves is called seismograph. <span>It records the shaking of the Earth. </span>The size of an earthquake is measured with its magnitude and intensity.
