Traditional View: proks. vs. euks. Size Nucleus Organelles Genetic material Reproduction Reproduction and Adaptation Prokaryotes reproduce quickly by binary fission and can divide every 1–3 hours Many prokaryotes form metabolically inactive endospores‚ which can remain viable in harsh conditions for centuries Prokaryotes can evolve rapidly because of their short generation times Reproduction in Prokaryotes? Fig. 12.12 Binary fission Reproduction without sex 3 processes that produce recombinant
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The Identification of Bacillus Badius [pic] Hannah Melanchuk Dr. Robert Suran May 1 2013 Microbiology Abstract Over a three week time span I was able to successfully identify an unknown microorganism by combining the results of several tests. The first test was the Gram stain test which showed the microorganism was Gram positive and rod shaped. Using an Unknown Identification Flowchart‚ I proceeded to inoculate a Starch plate. In week 2‚ I
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Bio 100 Lecture Final Study Guide (All answers are true or false) 1. The level of scientific thought that we have the most certainty in is the hypothesis. 2. Controlled science experiments have no validity in biology research. 3. All living things obtain energy from their environment. 4. The four organic macromolecule groups common to all living things are carbohydrates‚ proteins‚ nucleic acids‚ and fats. 5. All living things are composed of one or more cells. 6. Humans are
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Lab Report Title Page: Determine Disinfectant and Antiseptic Effectiveness Using Zone Inhibition Method Prepared for: By: Date: Introduction Page: Abstract This study is to examine the effects of different types of disinfectants by disk diffusion method using common agents such as Betadine‚ Clorox‚ Crest‚ Kiss My Face‚ Listerine‚ and Lysol. Wound care and general cleaning of home surfaces is a part of daily activity for many of the general population. Knowing
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Dr. GEORGE ROMBO Cholera This is an infection of the small intestine caused by bacterium vibrio cholera. Transmission is mostly from the fecal contamination of food and water that is caused by poor sanitation Susceptibility About 100 million bacteria must typically be ingested to cause cholera in a normal healthy adult. Children are also more susceptible with 2- 4 year old having the highest rates of infection Individual susceptibility to cholera is also affected by their blood type with
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BTN 211 TOTORIAL 1 Chapter 1 1. The History and Scope of Microbiology Which of the following distinguish the field of microbiology from other fields of biology? a. the size of the organism studied b. the techniques used to study organisms regardless of their size c. both the size of the organism studied and the techniques employed in the study of organisms d. neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size Who of
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Study Questions: Chapter 28 1.) Archaea and Bacteria are the oldest‚ structurally simplest and most abundant forms of life. 2.) Name and describe seven ways in which prokaryotes differ substantially from eukaryotes? Unicellularity- fundamentally single-celled Cell Size- can vary (large range changes with species) Nucleoid- lack a membrane-bound nucleus but rather a nucleoid region Cell Division/Genetic Recombination- binary fission (does not use spindle) and do not have a sexual cycle Internal
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used to teach the students how to stain and identify bacteria. There are several types of staining through which the bacteria can be identified based on the color and shape. The staining methods used in the lab are Gram Staining‚ Capsule Staining‚ Endospore Staining‚ and Acid Fast staining. One of the most significant method of staining is the Gram Staining‚ as it is highly dependent (McCarthy‚ 25). In the specific experiment that was done‚ Gram Staining was used and the bacteria that was found was
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SCOPE OF MICROBIOLOGY: What is Microbiology? | � Microbiology is the study of microorganisms� Microorganisms‚ roughly‚ are living things that are too small to be seen with the naked eye� Microorganisms cannot be distinguished phylogenetically from �macroorganisms� (see variety of microorganisms‚ below)� Microbiology is more a collection of techniques: aseptic technique‚ pure culture technique‚ microscopic observation of whole organisms‚ etc.� Microbiologists
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Archasea Bacteria Luca Last Universal Common Ancestor Lucas Characheristics deduce form shared characteristics of A + B today: DNA (cf. RNA) genome No nuclear membrane or intracellular organelles Electron Transport Chains (ETC)- ATP (energy) Proteins Same genetic code Prokaryontes 2.75 bya‚ are responsible for a dramatic increase in atmospheric O2. Cyanobacteria = photosynthesizing bacteria + related prokaryontes Evidence of O2 increase: Rust in rock
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