Bio Study guide exam 2

Bio Study guide exam 2 - Some study guide questions for...

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Some study guide questions for Exam 2 Chapters 6, 7, 11 + parts of chapters 26, 27, 48 1) Understand Miller-Urey experiment. What were the results? 2) What are the three domains of life? Archaea, Bacteria, Eukarya 3) What are the characteristic components of prokaryotes? Plasma Membrane, Gas Vacuole, Ribosome, Nucleoid, Cell wall, Fimbriae and Pille, Gagella, Endospore. 4) Compare and contrast bacteria and archaea with respect to characteristics discussed in class.(circle Diagram) 5) What is the bacterial cell wall made up of? Is this present in Archaea and Eukaryotes? 6) What extracellular structures are present outside the cell wall in certain bacteria? Fagellum and the Pilli(sex organs) 7) What are the functions of the following in bacteria: plasma membrane, gas vacuole, endospore, cell wall, flagella, pili, nucleoid, ribosomes. Plasma Membrane- Permeable barrier, boundry of cell, nutrient and waste transport, metabolic processes(respiration ect.) Gas Vacole- Makes it able to float in aquatic environments Endospore- Makes it able to survive in harsh conditions Cell Wall- Gives shape and protection from lysis in dilute solutions Flagella- Helps with movement Pilli- Sex organs Nucleoid- Location of DNA Ribosome- Synthesis of proteins. 8) Do bacteria have membrane bound organelles? Are ribosomes present in bacteria and archaea? Bacteria and Archaea do not have membrane bound organelles. Ribosomes are present in bacteria and Archaea 9) What are the energy sources in photoautotrophs and chemoautotrophs? What is their carbon source? Photoautotrophs use light as their energy source and CO2 as their carbon source. Chemoautotrophs use inorganic compounds as their energy source CO2 as well. 10) What are the energy and carbon sources in photoheterotrophs and chemoheterotrophs? Photeheterotrophs use light as their energy source and chemoherteroprophs use organic compounds. They both use organic compounds as their carbon sources. 11) What kinds of environments do extreme halophiles and thermophiles live in? What are methanogens? Thermophiles live in very hot environments and halophiles live in highly saline conditions. Methanogens are a unique was of obtaining energy, they produce methane from carbon dioxide and hydrogen, and live in swamps and marshes.
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12) How does the chemistry of Archaeal cell walls differ from bacteria? They do not contain peptidoglycan 13) What is unique about Archaeal lipids? They have branched hydrocarbon chains 14) What are the similarities and differences between prokaryotic and eukaryotic cells? 15) What are the different types of light microscopes? Brightfield Brightfield(stained) Phase-contrast Differential interference Fluorescence Confocal 16) What are the different types of electron microscopes? Scanning electron microscope
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Bio Study guide exam 2 - Some study guide questions for...

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