Periplasm - Study guides, Class notes & Summaries
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USMLE Step 1 First Aid – Microbiology with complete solution
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USMLE Step 1 First Aid – Microbiology with 
complete solution 
Cell Wall Overall Picture - Compare *Gram (+) to Gram (-)* - answer 
*Flagellum* on bacteria is composed of what? What is the function? - 
answerComposition: Proteins 
Function: motility 
*Pilus/Fimbria* on bacteria is composed of what? What is the function? - 
answerComposition: Glycoprotein 
Function: Mediate adherence of bacteria to cell surface, sex plus during 
conjugation. 
*Spore* formation is ONLY possible is what type of b...
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Med biochem - Exam 2 part 2 Questions And Answers All Correct
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Med biochem - Exam 2 part 2 Questions And Answers All Correct 
Gram positive bacterial cell envelope - ANS-has OM, peptidoglycan layer, cytoplasmic membrane (IM), 
then the cytoplasm 
- Cytoplasmic membrane: phospholipids and protein 
- PG 
- Techoic Acid 
- S-Layer Proteins 
Gram stain of bacterial cell envelopes - ANS-Primary stain of crystal violet and a counterstain of safranin. 
differentiates gram negative (pink) and gram positive (purple) 
Functions of bacterial cell envelopes - ANS-1. ...
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BIOL 250 Exam 1 Test, Study Guide, and Homework Questions with Correct Answers
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A pure culture 
 
A) is sterile. 
B) is a population of identical cells. 
C) is made of a precisely defined chemical medium. 
D) contains one microbial cell. Correct Answer B 
 
Microbial cells first evolved on Earth approximately ________ _______ years ago. 
 
A) 1.6 to 1.8 million 
B) 7.0 to 7.2 million 
C) 3.8 to 3.9 billion 
D) 10.5 to 11.5 billion 
E) None of the above Correct Answer C 
 
Predict how Pasteur's conclusions on spontaneous generation with swan flasks 
would have changed if he...
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BIOL 221 Exam 2 MCQs| Already Passed |Verified 100%
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At the molecular level, how is a proton gradient generated by the quinone loop? A. Electrons in the quinone are excited by light, and end up in NADH, which creates the PMF. B. The quinone, which is located in the periplasm, accepts H+ from the cytoplasm. C. The quinone donates both H+ and electrons, but FeS proteins only accept electrons. D. The quinone donates 2 protons to O2 to make water, which leaves the cell. E. Light causes the quinone to "flip" a proton to the outside of the membrane C ...
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BIOL 438 Nitrification Test Questions and Correct Answers
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What is nitrification? What are the two steps of the process? Oxidation of ammonia (NH4+) to nitrite (NO2-) and Nitrate (NO3-) 
1. ammonia oxidation to nitrite by ammonia-oxidizing bacteria (AOB) 
NH3 + O2 + ADP + Pi --> NO2- + H+ + ATP 
2. nitrite oxidation to nitrate by nitrite-oxidizing-bacteria 
NO2- + O2 + ADP + Pi --> NO3- + ATP 
What is the produced ATP used for in the nitrite-oxidizing bacteria (NOBs) ? The ATP is used to fix CO2 in the calvin cycle. This allows for NOBs to grow on...
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Microimm 2500 Bacteriology Exam Questions With Verified Solutions
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Microimm 2500 Bacteriology Exam 
Questions With Verified Solutions 
Prokaryotes - answersmallest, simplest organisms on Earth; most abundant; includes bacteria 
& archaea; lack nucleus and complex organelles 
four phases of bacterial growth - answerlag; log; stationary; death 
bacteria reproductive mechanism - answerbinary fission 
bacterial generation time - answertime between generations (time for one division) 
reason stationary phase exists - answerbacteria reach a point where resources are ...
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Microimm 2500 Bacteriology Exam Questions With Verified Solutions
- Exam (elaborations) • 14 pages • 2024
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Microimm 2500 Bacteriology Exam 
Questions With Verified Solutions 
Prokaryotes - answersmallest, simplest organisms on Earth; most abundant; includes bacteria 
& archaea; lack nucleus and complex organelles 
four phases of bacterial growth - answerlag; log; stationary; death 
bacteria reproductive mechanism - answerbinary fission 
bacterial generation time - answertime between generations (time for one division) 
reason stationary phase exists - answerbacteria reach a point where resources are ...
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Med biochem - Exam 2 part 2 Questions And Answers All Correct
- Exam (elaborations) • 19 pages • 2023
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Med biochem - Exam 2 part 2 Questions And Answers All Correct 
Gram positive bacterial cell envelope - ANS-has OM, peptidoglycan layer, cytoplasmic membrane (IM), 
then the cytoplasm 
- Cytoplasmic membrane: phospholipids and protein 
- PG 
- Techoic Acid 
- S-Layer Proteins 
Gram stain of bacterial cell envelopes - ANS-Primary stain of crystal violet and a counterstain of safranin. 
differentiates gram negative (pink) and gram positive (purple) 
Functions of bacterial cell envelopes - ANS-1. ...
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MIC 102 Final Exam Questions with Correct Answers
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MIC 102 Final Exam Questions with Correct Answers 
What are the different types of microscopy and staining and when are they used? - Answer-Types of microscopy include: light microscopy- used primarily to get an idea of the form of the bacteria, used in combination with staining to get an idea of Gram positive and Gram negative protein. Green fluorescent is used to observe cell occurrences like binary fission and movement of proteins. 
Electron microscopy is very detailed at getting an idea of ...
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ASU MIC 220 Exam 1 Study Guide Questions With Complete Solutions
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Based on the nomenclature for bacterial genes and proteins, which of the following seems like a name for bacterial malate dehydrogenase (an important enzyme in central metabolism)? correct answer: Mdh 
 
The first person to visualize individual microbes was: correct answer: Antonie van Leewenhoek 
 
What is the correct order of reagents in the Gram stain? correct answer: Crystal violet, iodine, ethanol, safranin 
 
All of the following are true about the outer membrane in Gram-negative bacter...
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