Biol 550 Test 1 Review Questions

Biol 550 Test 1 Review Questions - 1) 3 benefits of being...

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1) 3 benefits of being small? Rapid nutrient exchange (Large surface to volume ratio) Rapid growth Large populations Mutations leading to adaptability 2) 3 features of an endospore that contriute to its resistance to heat, radiation, and chemicals. For extra credit, list a genus that has a species that can form and endospore. * Dehydration of the endospore core cytoplasm making it that of gel. *endospore contains high levels of small acid-soluble proteins to prevent damage from radiation. *Enrichment of calcium complexed with dipicolinic acid. *Bacillus 3) List 6 characteristics of cellular life. *metabolism, reproduction, differentiation, communication, movement, evolution 4) Describe how chemoheterotrophs establish and maintain a proton motive force and generate ATP. Include a drawing in which key components are labeled. What is the process called? What would happen if the cytoplasmic membrane were damaged? 5) Discuss Pasteur’s experiment and explain what was conmeing about it. *Took a broth and steilized it using a flame. Then he bent the neck of the flask and sterilized the flask. Dust particles in the air did not come into contact with the broth, and no microorganisms were present in the broth. When the broth interacted with the contaiminated air, and was allowed to sit for a bit, microorganisms were present in the broth. Disproved spontaneous generation. 6) Discuss diversity of photosynthetic prokaryotes, include a discussion on phylogenetics (i.e. group/phylum name), physiology, and at the molecular level.
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Only have one chromosome and a haploid. They generate energy along the cell membrane by ETC. Have membranous vesicles where photosythetics pigments are found to use light energy for the production of ATP by exciting electrons. 7) Your roommate swabs his dead hamster and grows bacteria on sterile media plate.
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This note was uploaded on 06/17/2011 for the course BIOL 550 taught by Professor Long during the Fall '10 term at South Carolina.

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Biol 550 Test 1 Review Questions - 1) 3 benefits of being...

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