Explain why each of the following characteristics of a classification system is important: a) It assigns a single, universally accepted name to each organism. b) It places organisms into groups that are biologically related. c) It divides organisms into small groups.ame: _________________________ Block: __________ Date: ___________________________ Taxonomy worksheet s in each of the following pairs. 1. Vocabulary AE Ã¦ distinguish between the) term, taxonomy binomial. nomenclature s in each of the following. pairs
Phenylthiocarbamide (PTC), also known as phenylthiourea (PTU), is an organosulfur thiourea containing a phenyl ring. It has the unusual property that it either tastes very bitter or is virtually tasteless, depending on the genetic makeup of the taster.
PTC stands for âPositive Temperature Coefficientâ. PTC thermistors are resistors with a positive temperature coefficient, which means that the resistance increases with increasing temperature. PTC thermistors are divided into two groups, based on the materials used, their structure and the manufacturing process. The first group of PTC thermistors is comprised of silistors, which use silicon as the semiconductive material. They are used as PTC temperature sensors for their linear characteristic. The second group is the switching type PTC thermistor. This type of PTC thermistors is widely used in PTC heaters, sensors etc. Polymer PTC thermistors, made of a special plastic, are also in this second group, often used as resettable fuses. The switching type PTC thermistor has a highly nonlinear resistance-temperature curve.