IRSC MCB2010 Brand New Expert Exam Questions with Clear Correct Answers|All Graded A+|Latest Premium Update()|100% Guaranteed Success.

IRSC MCB2010 Brand New Expert Exam Questions with Clear Correct Answers|All Graded A+|Latest Premium Update()|100% Guaranteed Success. Which of the following are autotrophic? - AnswerCyanobacteria and Algae Ecologically speaking, which of these is the most important benefit that microbes perform? - AnswerNitrogen Fixation Which of these is acid fast positive? - AnswerMycobacterium Tuberculosis All of the following improves resolving power EXCEPT - AnswerUsing a red filter on the condenser Which of the following is NOT used in the gram stain? - AnswerCarbolfuchsin Resolution is best defined as - AnswerThe ability to distinguish two adjacent objects as two separate and distinct objects A patient walks into the clinic with a sore that appears to be primary syphilis. This disease is caused by a spirochete. To diagnose this disease we use a dye that attaches to the exterior of the organism. What type of microscope will be used to confirm your diagnosis? - AnswerDarkfield Fimbriae/pili can be used for - AnswerAttachment to surfaces Bio films form when bacteria produce - AnswerGlycocalyxes Which of these is TRUE concerning LPS? - AnswerPart of the outer membrane of gram negative bacteria Since bacteria have a cell wall, they don't need a plasma membrane - AnswerFalse Which of these lack cell walls? - AnswerProtozoans Antoni van Leeuwenhoek was the first person to - AnswerView Protozoa and bacteria Endospores are found in - AnswerClostridium sp. Endospores are used by bacteria to - AnswerResist harsh environments Which of the following is an incorrect pairing? - Answerprotozoa; multicellular Koch's postulates establish: - AnswerA cause effect relationship between a specific microorganism and an infectious disease Which of the following individuals pioneered the use of chemicals to reduce the incidence of infections during surgery? - AnswerLister The peptidoglycan molecule is responsible for the: - AnswerSemirigid cell wall structure of prokaryotes The gram stain: - AnswerWill differentiate bacterial cells based on the chemical differences in their cell walls If a microbiology lab tech left the Safranin out of the gram stain procedure, what would be the result? - AnswerGram positive bacteria would be purple and gram negative cells would be colorless Bacterial cells can be classified: - AnswerAccording to their physical characteristics; the utilization of certain chemicals; using serological tests What is the purpose of the iodine in the Gram stain? - AnswerTo act as the mordant; to form an insolvable complex with the crystal violet A negative stain leaves cells colorless while staining the background of the smear - AnswerTrue Which of the following best describes why gram negative bacteria stain red? - AnswerThe outer membrane is dissolved by the decolorizer Archael cell walls: - AnswerContains specialized polysaccharides but does not contain peptidoglycan Prokaryotic and eukaryotic ribosomes - AnswerAre different sizes, thus can be effectively used as an antibacterial target Human pathogens are classified as: - AnswerMesophiles