Importance as human pathogens or not 5.) Name the domains of life. Archaea Bacteria Eukarya 6.) Name and describe 3 basic forms of prokaryotes. Bacillus (rod-shaped) Coccus (spherical/ovoid-shaped) Spirillum (long and helical-shaped) 7.) The bacterial cell wall is the single most important contributor to cell shape. 8.) Prokaryotic cell walls are constructed of many layers‚ which is formed from peptidoglycan polymers cross-linked by peptide side chains. 9.) Describe a Gram Stain. Staining
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Ch. 18. viral and bacterial genetics Virus Not living‚ nucleic acids and proteins Viriods and prions Viriods: Single stranded circular Rna Prions: only protein Bacteria Living‚ prokaryotes 1 Seven characteristics common to life Cells and organization Energy use Respond to environmental change Regulation and homeostasis Growth and development Reproduction Change over the course of generations 2 Viruses Over 4‚000 different types of viruses Virus have their
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wall * Ribosomes * Nucleoid * Flagella * Pilli * Cytoplasm Capsule * Keeps the cell from drying out and helps it stick to food or other cells. Cell wall * Thick outer covering that maintains the overall shape of the bacterial cell. Ribosomes * Cell part where proteins are made. * Ribosomes give the cytoplasm of bacteria a granular appearance in electron micrographs. Nucleoid * A ring made up of DNA. Flagella * A whip-like tail that some bacteria have
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Universiti Teknologi MARA CONFIDENTIAL CONFIDENTIAL 2 AS/OCT2010/MIC455 QUESTION 1 Fill in the blank with the appropriate answers. Write the answers in the answer booklet. a) The two (2) main components making up the peptidoglycan of bacterial cell wall are and . The scientific names of any two (2) microorganisms that are not classified as prokaryotes are and The two (2) genera of bacteria that are capable of producing spores are and b) c) d) An example of a Gram positive bacteria
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Chapter 27. BACTERIA & ARCHEA Overview: Prokaryotes thrive almost everywhere‚ including places too acidic‚ salty‚ cold‚ or hot for most other organisms Masters of Adaptation Most prokaryotes are microscopic‚ but what they lack in size they make up for in numbers There are more in a handful of fertile soil than the number of people who have ever lived They have an astonishing genetic diversity Prokaryotes are divided into two domains: bacteria and archaea Structural‚ functional‚ and genetic
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alive because it does not need a living cell to thrive. Bacterial cells utilize binary fission followed by replication of the bacterial chromosome. Bacteria can grow on non-living surfaces and resides in between cells‚ instead of inside a living cell‚ the only place amicable for viruses. They transfer genes from various cells by transformation‚ transduction‚ or conjugation. Small circular DNA molecules called plasmids‚ carry the bacterial chromosome during gene transfers. Strep throat is a common
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Chapter 18 The Genetics of Viruses and Bacteria Lecture Outline Overview: Microbial Model Systems Viruses and bacteria are the simplest biological systems—microbial models in which scientists find life’s fundamental molecular mechanisms in their most basic‚ accessible forms. Molecular biology was born in the laboratories of microbiologists studying viruses and bacteria. Microbes such as E. coli and its viruses are called model systems because of their use in studies that reveal broad biological
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Biology IB Standard Level 2012-2014 Index Topic 1 Topic 2 Topic 3 Topic 4 Topic 5 Topic 6 Topic 7 Topic 8 Topic 9 Topic 10 Topic 11 Statistical analysis Cells The chemistry of life Genetics Ecology and evolution Human health and physiology Nucleic acids and proteins Cell respiration and photosynthesis Plant science Genetics Human health and physiology Topic
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Health Science. Keywords: Antibiotic‚ intrinsic resistance‚ acquired resistance‚ mutation‚ plasmid‚ intergorns‚ efflux pump. INTRODUCTION It is said that the invention of the antibiotic is the most pioneer achievement of humans against the bacterial infections in the human health science. The first antibiotic appeared in 1928 by Alexander Flaming that is penicillin which kill all surrounding bacteria. And thus‚ the concept of antibiotic came and it changed the method of infection treatment.
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Bacterial Evolution Outline Evolution is defined as the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. The theory generates from Darwin’s Theory Of Evolution. Darwin’s Theory Of Evolution describes a process in which all life is related and has came from a common ancestor. More complex creatures evolve from less complex or simple ancestors over time due to genetic mutations that are deemed beneficial
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