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Microbiology

Campbell 9th Chapter 19 Lecture Outline

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Biology
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Microbiology
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Chapter 19 Viruses Lecture Outline Overview: A Borrowed Life ? Viruses are the simplest biological systems. ? Most viruses are little more than aggregates of nucleic acids and protein?genes in a protein coat. ? Are viruses living or nonliving? ? Viruses cannot reproduce or carry out metabolic activities outside of a host cell. ? Most virologists would probably agree that viruses are not alive but lead ?a kind of borrowed life.? ? Molecular biology was born in the laboratories of microbiologists studying viruses that infect bacteria. ? Experiments with viruses provided key evidence that genes are made of nucleic acids. ? Viruses were critical in working out most of the major steps in DNA replication, transcription, and translation.

APES chapter 6 human population

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Environmental Science
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APES Chapter 6 ID: The Human Population and Its Impact Use chapter 6 of your textbook to answer the following questions. What are 3 factors that account for the rapid growth of the world?s human population over the past 200 years. What is the projected human population for the year 2050? 1- humans developed the ability to expand into diverse new habitats and different climate zones 2-emergence of early and modern agriculture allowed more people to be fed for each unit of land area farmed 3-the development of sanitation system, antibiotics, and vaccines helped control infectious disease agents. The projected human population by 2050 is 9.3 billion

Cell Division

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cell division

Cell Division Cell Division in Prokaryotes DNA is a circular chromosome attached to the inner surface of the plasma membrane like a rope attached to the inner wall of a tent Binary fission- Division of a prokaryotic cell into two offspring cells DNA is copied, two identical chromosomes attach to the inside of the prokaryote?s inner cell membrane A new cell membrane begins to develop between the two DNA copies As new material is added, the growing cell membrane pushes inward and the cell is constricted in the center A new cell wall forms around the new membrane and the prokaryote is split into two Each cell contains one of the identical chromosomes that resulted from the copying of the original cell?s chromosomes Cell Division in Eukaryotes

Campbell Biology Vocabulary Terms

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ALl Words_BIO-II CHAPTERS Chapter Word Definition 01 Animalia The kingdom that consists of multicellular eukaryotes that ingest their food. 01 Archaea One of two prokaryotic domains, the other being Bacteria. 01 Bacteria One of two prokaryotic domains, the other being Archaea. 01 bioinformatics Using computing power, software, and mathematical models to process and integrate biological information from large data sets. 01 biology The scientific study of life. 01 biosphere The entire portion of Earth inhabited by life; the sum of all the planet?s ecosystems. 01 cell Life?s fundamental unit of structure and function.

Chapter 4

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Summary 1. Life emerged on the earth through two phases of development: a chemical evolution of the organic molecules, biopolymers, and systems of chemical reactions to form the first cells and the biological evolution from single-celled prokaryotic bacteria to single-celled eukaryotic creatures, and then to multicellular organisms. 2. Evolution is the change in a population’s genetic makeup over time. Evolution forces adaptations to changes in environmental conditions in a population. The diversity of life on earth reflects the wide variety of adaptations necessary and suggests that environmental conditions have varied widely over the life of the earth.

Varicella Zoster

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Varicella Zoster

Varicella Zoster (aka) Shingles Shingles Lysogenic Enters the organism- After someone has chicken pox the virus can remain dormant in certain nerve cells in the body. Blisters form along the affected area (normally a narrow strip of skin starting near the spine and spreading to the stomach) the blisters break, forming small ulcers that begin to dry and form crusts. The crusts fall off in 2 to 3 weeks. Scarring is rare. The rash may involve face, eyes, mouth, and ears. Herpes Zoster has no specific location or ethnicity it affects, but the incidence rate for it is every year it ranges from 1.2 to 3.4 cases per 1,000 healthy individuals, increasing to 3.9?11.8 per year per 1,000 individuals among those older than 65 years.

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