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Bacteriology

AP Biology Free Response Questions

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AP BIOLOGY EXAM ESSAY (FREE RESPONSE) QUESTIONS General directions: Answers must be in essay form. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely, and answer each section of the question. When giving examples, the first ones you give will be the ones graded. (if two examples are asked for, and you write about 4, make sure the first two are the best ones; they are the only ones counted!) UNIT 1 BIOCHEMISTRY, WATER, ENZYMES #1 (1996) The unique properties of water make life possible on earth. Select three properties of water and a. for each property, identify and define the property and explain it in terms of the physical/chemical nature of water.

prokaryotic cell biofact sheet

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The Prokaryotic Cell B io F actsheet September 2000 Number 73 1 The contents of this Factsheet cover the relevant AS syllabus content of the major examining boards. By studying this Factsheet the candidate will gain a knowledge and understanding of the structure of a prokaryotic cell, the range of prokaryotic organisms and the importances of prokaryotic organisms. Introduction Bacteria (eg Escherichia coli) and Cyanobacteria (blue-green algae) (eg Nostoc) are single-celled and characteristically possess no nucleus. They are prokaryotic organisms. Remember ? the Cyanophyta or blue-green algae are now classed as Cyanobacteria because they are prokaryotic. Algae are all eukaryotic since they possess nucleated cells and cell organelles. In some older

Microbiology Chapter 5 Notes Powerpoint

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Bacteria The First Microbes 5 Looking Ahead On completing this chapter, you should be able to: Appreciate the enormous span of time for which bacteria have existed on Earth and understand their contributions to the formation of the world as we know it Summarize the various forms of known bacteria and define many of the submicroscopic structures associated with a bacterial cell Describe the process by which bacteria reproduce and grasp the significance of the frequency of bacterial replication Looking Ahead On completing this chapter, you should be able to: Identify some of the environments in which bacteria thrive and recognize the different types of cultivation techniques available for growing bacteria in the laboratory

Micriobiology Chapter 1 Outline

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? 2004 by Jones and Bartlett Publishers ?You do not really understand something unless you can explain it to your grandmother.? --Albert Einstein Course Introduction Textbook, some special features: ? Learning objectives ? Foundation Figures ? Clinical Focus Boxes ? End of chapter study outline ? Check your understanding questions and EOC study questions ? Cutting Edge Media Supplements on Tortora Textbook Website Lab exercises: In-house Manual Research Projects and Presentations First Homework (worth 4 pts.) Due Saturday 11 PM of the first week of school. ? Log on to Blackboard http://clpccd.blackboard.com and enter the Microbiology 1 class site (1 pt.) ? Go to ?Tools?, then ?Personal Information?. Make

Intro to Cells

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Bio 230: Cell Bio Intro to Cells: pg 1-26 Properties that define living organisms: Ability to reproduce on their own Viruses? Not living organisms but incapable of reproducing on their own Can grow and develop Require energy - metabolism Response to the environment Maintain homeostasis Contains genetic information (DNA or RNA) Composed of cells Cells are the fundamental unit of life. Invention of the light microscope led to the discovery of cells Robert Hooke Shortened telescope Many flaws, difficult to see Oil lamp with flask of water to illuminate specimen Examined cork - coined term cell Remains of cell walls after death Theodore Schwann All different species of animals were composed of cells Mathias Schleiden All different species of plants were composed of cells

Chapter 27: Bacteria and Archaea (9th Edition)

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CAMPBELL BIOLOGY, AP* 9th EDITION Chapter 27: Bacteria and Archaea 27.1 first organisms were likely prokaryotes unicellular variety of shapes - spherical, rod-shaped, and spiral well-organized the cell wall keeps it from bursting in a hypotonic solution and supports structure in hypertonic solutions, they shrink away from walls/plasmolyze contain peptidoglycan - polymer made of modified sugars crosslinked by short polypeptides. Archaea lack peptidoglycan but bacteria have it. Using the a technique called the Gram stain, scientists classify bacterial species into two ?groups based on cell wall composition Gram positive - simpler walls and a large amount of peptidoglycan Gram negative - less peptidoglycan and more structurally complex. Has an outer lipopolysaccharide membrane

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.

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