Lipopolysaccharide - Study guides, Class notes & Summaries

C453 Clinical Microbiology Study Questions With Answers (Updated 2022) A+. Describe the general characteristics of bacteria by answering the following questions. a. Are bacteria prokaryotic or eukaryotic? Why? Prokaryotic because their genetic material (DNA) is not housed within a true nucleus. b. Single-celled or multicellular? Why? Usually unicellular c. Can they be seen with the naked eye? Why? No; typically they are about 1um (need to be at least 100um to be visible without a microscope...

sterile compounding is influenced by... : operator, environment, supplies difference between infection and contamination depends on the ________________________ : concentration of the microbial source modes of transport of contaminants : direct, indirect direct contamination : from reservoir to host; skin to skin, droplet through cough, sneeze, talking, chewing gum indirect contamination 2 | P a g e : from reservoir to host through intermediaries; air particles (dust), inanimate ...

Microbiology for COMLEX Level 1 Exam Questions With Verified And Updated Answers. Main virulence factor for Staph aureus - answerProtein A IVDU causes rapid onset bacterial endocarditis (what bacteria) - answerStaph aureus -Tricuspid valve most commonly affected -"Tricuspid valve endocarditis" Most common cause of Toxic Shock Syndrome - answerStaph aureus -Hx of nasal packing or tampon in for too long Treatment for Staph aureus (MSSA) - answerNafcillin -"Naf for Staph" Pnemonic fo...

Microbiology Unit 1 Exam Questions & Answers 2024 PEPTIDOGLYCAN - ANSWER-Polysaccharide composed of chains of two alternating sugars and crossbridges of amino acids GRAM + CELL WALL - ANSWER-Composed of 90% Peptidoglycan and Teichoic Acids that anchor wall to cytoplasmic membrane, Simplex Structure GRAM - CELL WALL - ANSWER-Composed of 10% Peptidoglycan and phosholipids, proteins, and lipopolysaccharide, Complex Structure PROKARYOTES - ANSWER-Lack nucleus & organelles, simple struc...

GMS 6121 Exam 3 Quizzes with 100% Correctly Solved Which of the following are NOT accurately described structural relationships of bacteria? a) gram positive: thick peptidoglycan and teichoic acid b) gram negative: outer membrane and LPS c) acid-fast: waxes and lipids d) wall-less: LOS and cholesterol Answer-d) wall-less do have cholesterol from the host but do not have LOS/LPS Why are gram negative bacteria resistant to bacitracin and vancomycin? a) porins b) they lack the targets for...

In a laboratory, the clinical microbiologist is responsible for all of the following EXCEPT: a) isolating microorganisms b) diagnosing diseases in patients c) identifying microorganisms d) analyzing bacteria that cause disease diagnosing diseases in patients This constituent of a gram-positive cell wall absorbs crystal violet but is not dissolved by alcohol, thus giving the gram-positive cell its characteristic purple color: a) mycolic acid b) cholesterol c) carbolfuchsin d) ...

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 ...

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 answers 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 answers c Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have changed if he w...

Developed smallpox immunization using cowpox agent - Edward Jenner Sought a "magic bullet" to destroy pathogens & not host - Paul Ehrlich Discovered penicillin - Alexander Fleming Pioneered aseptic surgery, Prevented surgical infections by using mists of phenol - Joseph Lister Father of Epidemiology (Cholera in London) - John Snow Pioneered asepsis by discovering that hand washing prevented streptococcal infections in obstetric patients - Ignaz Semmelweis Pioneered the culti...

Which of the following structures are found only in prokaryotic cells? A) endoplasmic reticulum B) peptidoglycan C) nucleolus D) lysosomes Ans: B Which of the following cellular structures can be found in both prokaryotic and eukaryotic cells? A) nucleus B) Golgi apparatus C) lysosomes D) ribosomes Ans: D Which is the correct ordering of cell wall components starting from outside the cell and going inward? A) In Gram-negative bacteria: peptidoglycan, lipopolysaccharide, ou...