NATS 1610 Study Guide - Final Guide: Nuclear Membrane, Microvillus, Mitosis
19 Jan 2015
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Document Summary
The living body begins at fertilization when one sperm fertilizes an egg: Fertilization enables the combination of dna from two parents creating genetic diversity. The fertilized egg (zygote) cleaves to increase cell numbers. The metabolic requirements set an upper limit to the size of a single cell. As a cell increases in size its volume increases faster than its surface area smaller objects have a greater ratio of surface area to volume. The sa of a cell is its cell membrane want to have more cell membrane fro efficient nutrient waste diffusion. Cells divide instead of growing larger to limit their surface area to volume ratio. The sa of a cell is its cell membrane. As a cell gets larger, vol increases faster than sa less surface area per unit volume = less cell membrane for nutrient/waste diffusion. The cell cycle describes the life events of a cell:
