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Download PDF by Sherman Hollar: A Closer Look at Biology, Microbiology, and the Cell

By Sherman Hollar

ISBN-10: 1615305637

ISBN-13: 9781615305636

Formalizing research of the flora and fauna could appear like a frightening job contemplating the sheer breadth and diversity of residing issues that inhabit the planet. From the microscopic organisms within the worlds so much distant destinations to these within the human physique, facts of the complex buildings and mechanisms that permit existence are ubiquitous and new discoveries continually demonstrate new probabilities that call for to be tested. This quantity surveys the multitude of topics that include the sphere of biology and comprises an summary of the improvement of biology, microbiology, and mobilephone thought.

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Extra info for A Closer Look at Biology, Microbiology, and the Cell (Introduction to Biology)

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In some fungi the cell wall is composed of chitin, a polysaccharide that 59 A Closer Look at Biology, Microbiology, and the Cell also forms the exoskeleton of many invertebrates such as insects and crabs. The bacterial cell wall is composed mostly of peptidoglycan, which is made up of polysaccharides and amino acids. The cell walls of the diatom (a tiny one-celled organism) have a high concentration of silica, which gives them a glasslike appearance. Cytoplasm Water is the largest component of cytoplasm.

Over the years, microbiology has extended to include more than microbes alone. For instance, the field of immunology, which studies the body’s reaction to microbes, is closely aligned with microbiology. In addition, a whole new field of molecular biology has emerged. Today molecular biologists study the properties of cellular structures such as proteins and nucleic acids. Microbes are widely spread over the surface of the Earth and play a crucial role in ecology. Soil and water contain high concentrations of bacteria and molds (two types of microbes), and the surface of every human body is covered with a unique microbial flora.

All cells contain cytoplasm, a substance made up of water, proteins, and other 52 Cell Structure and Function Red blood cells are shaped like disks, but other cells come in a variety of shapes and sizes. iStockphoto/Thinkstock molecules surrounded by a membrane. The cytoplasm of eukaryotic cells also contains numerous kinds of bodies called organelles. Much of the cell’s work takes place in the cytoplasm. 53 A Closer Look at Biology, Microbiology, and the Cell Some typical eukaryotic cells. Encyclopædia Britannica, Inc.

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A Closer Look at Biology, Microbiology, and the Cell (Introduction to Biology) by Sherman Hollar


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