Periplasm - Study guides, Class notes & Summaries

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...

BI 234 UNIT 1 VOCAB EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED Amino Acid 20 amino acids Building blocks of protein. The sequence of amino acids determines everything about a protein, including its function. Bacteria (domain) tiny micro organisms (plural) bacterial pertaining to bacteria bacterium Tiny micro organism ( singular) cell membrane While the cell membrane provides waterproofing and selective permeability cell wall the cell wall provides physical streng...

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...

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. ...

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 ...

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...

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 ...

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 ...

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 ...

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. ...