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The nuclear–cytoplasmic ratio (also variously known as the nucleus:cytoplasm ratio, nucleus–cytoplasm ratio, N:C ratio, or N/C) is a measurement used in cell biology. It is a ratio of the size (i.e., volume) of the nucleus of a cell to the size of the cytoplasm of that cell.
A cell maintains a relatively constant N/C ratio by coupling DNA content, nuclear size, and cell size. We explore how cells couple cell division and growth to DNA content. In some cases, cells use DNA as a molecular yardstick to control the availability of cell cycle regulators.
Nucleus-to-cytoplasm ratio, also nuclear-cytoplasmic ratio, is the relative size of the nucleus to the cytoplasm. It is commonly abbreviated NC ratio. High NC ratio is a strong predictor of malignancy. Like very rule, there are exceptions. NC ratio is a better predictor of malignancy than increased nuclear size.
27 sie 2018 · Experts disagree on the optimal C:N ratio, but most scientific literature typically recommends something between 25:1 and 30:1. Higher ratios are fine if a slow composting process is acceptable. The C:N Ratio List. Here’s a list of the average C:N ratios of common compost ingredients, pulled from a variety of sources: Swine manure: 6:1.
This calculation solves for the carbon to nitrogen ratio of up to three materials. Enter the mass of each material (wet weight), percentage of carbon, percentage of nitrogen, and percentage of moisture, then click on the calculate button.
Provided that nitrogen is conserved (and not lost as ammonia gas or by leaching), the C:N ratio in a moist, well-aerated compost pile decreases with time. Ultimately, a stable organic material called humus is formed with a C:N ratio of about 10:1, i.e. 50% carbon and 5% nitrogen.
Quick, free, online unit converter that converts common units of measurement, along with 77 other converters covering an assortment of units. The site also includes a predictive tool that suggests possible conversions based on input, allowing for easier navigation while learning more about various unit systems.
