MicroBiology-Draft/Sample

Chapter 3 The Cell Figure 3.1 Microorganisms vary visually in their size and shape, as can be observed microscopically; but they ...

3.1 Spontaneous Generation Learning Objectives Explain the theory of spontaneous generation and why people once accepted it as ...

Figure 3.2 Francesco Redi’s experimental setup consisted of an open container, a container sealed with a cork top, and a contain ...

Figure 3.3 (a) Francesco Redi, who demonstrated that maggots were the offspring of flies, not products of spontaneous generation ...

Figure 3.4 (a) French scientist Louis Pasteur, who definitively refuted the long-disputed theory of spontaneous generation. (b) ...

3.2 Foundations of Modern Cell Theory Learning Objectives Explain the key points of cell theory and the individual contribution ...

Theodor Schwann (1810–1882), a noted German physiologist, made similar microscopic observations of animal tissue. In 1839, after ...

Figure 3.6 (a) Rudolf Virchow (1821–1902) popularized the cell theory in an 1855 essay entitled “Cellular Pathology.”(b) The ide ...

dissenting scientists by showing that much of the genome of mitochondria had been transferred to the host cell’s nucleus, preven ...

Figure 3.7 According to the endosymbiotic theory, mitochondria and chloroplasts are each derived from the uptake of bacteria. Th ...

examined. His suspicions were supported by the untimely death of a friend, a physician who contracted a fatal wound infection af ...

handwashing and extreme cleanliness during surgery. In 1867, to further decrease the incidence of postsurgical wound infections, ...

Figure 3.10 This is a chest radiograph typical of pneumonia. Because X-ray images are negative images, a “shadow” is seen as a w ...

Compare and contrast the miasma theory of disease with the germ theory of disease. How did Joseph Lister’s work contribute to t ...

Figure 3.12 A typical prokaryotic cell contains a cell membrane, chromosomal DNA that is concentrated in a nucleoid, ribosomes, ...

Figure 3.13 94 Chapter 3 | The Cell This OpenStax book is available for free at http://cnx.org/content/col12063/1.2 ...

Figure 3.14 In most prokaryotic cells, morphology is maintained by thecell wallin combination with cytoskeletal elements. The ce ...

prone to lysis in hypotonic environments. The presence of a cell wall allows the cell to maintain its shape and integrity for a ...

Explain the difference between cell morphology and arrangement. What advantages do cell walls provide prokaryotic cells? The N ...

Figure 3.18 Prokaryotic ribosomes (70S) are composed of two subunits: the 30S (small subunit) and the 50S (large subunit), each ...