BCH 2333 Chapter Notes - Chapter 1: Keratin, Plant, Chromatin
16 Feb 2015
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Chapter 1: life: norman horowitz proposed a useful set of criteria for living systems: life possesses the properties of replication, catalysis, and mutability, biochemistry is the study of life on the molecular level. Prokaryotes: life is based on morphological units known as cells. >has a membrane-enclosed nucleus that contains the dna(deoxyribonucleic acid) and the prokaryotes(pro:before) >lacks a nucleus: prokaryotes comprise different types of bacteria. >have simple structures and are unicellular: eukaryotes are way more complex than prokaryotes though they are multicellular as well as unicellular, viruses are simple entities than cells. >not classified as living because they lack the metabolic apparatus to reproduce outside their host cell. Prokaryotes have relatively simple anatomies: prokaryotes were first observed in 1683 by the inventor of the microscope, amtpmoe van leeuwenhoek, prokaryotes" size vary from the range 1 to 10 micrometer. >have one of the three basic shapes: spherodial(cocci), rodlike(bacilli), and helically coiled(spirilla) but all have same general design.
