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 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...

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...

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) ...

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...

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...

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...

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...