Select all that apply to a direct simple stain: O uses only 1 dye in the procedure O uses multiple dyes in the procedure can be used to determine cell morphology, size, and arrangement. O does not involve fixing does involve fixing does not involve a washing step does involve a washing step O the dye is basic or positively charged and stains the bacteria O the dye is acidic or negatively charged and stains the background Ocells may be distorted or shrunken cells will never be distorted or shrunken

Select all that apply to a direct simple stain: O uses only 1 dye in the procedure O uses multiple dyes in the procedure can be used to determine cell morphology, size, and arrangement. O does not involve fixing does involve fixing does not involve a washing step does involve a washing step O the dye is basic or positively charged and stains the bacteria O the dye is acidic or negatively charged and stains the background Ocells may be distorted or shrunken cells will never be distorted or shrunken

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Which of the following reasons is why slides should be labeled with a wax pencil before staining? (All three correct answers must be chosen to receive credit) Select All That Apply A To identify which bacterium/bacteria are placed on the slide B To prevent the slide from breaking during heat fixing ☐ C To identify which staining technique is being used OD To ensure the slide is in the correction orientation when placed on the stage ☐ E To give a focusing reference before attempting to find the bacterial smear ?
Imagine a cell that truly has a Gram-positive style of cell wall. Which of the following staining errors would cause the cell to give a Gram-negative reaction? Assume that only 1 error is made at a time, but more than 1 type of error MAY be able interfere with the Gram stain. Mark all that are correct. 1. Forgetting to apply the crystal violet 2. Forgetting to apply the iodine 3. Forgetting to apply the alcohol 4. Leaving the alcohol on for 60 seconds (too long) 5. Forgetting to apply the safranin
What is the Description and uses of these type of microsope?Explain in 2-3 sentencesDescription:Uses: a. Bright Fieldb. Phase Contrastc. Fluorescenced. Confocale. Transmission EMf. Scanning EM
start with the results of your Gram Stain. In the spaces labeled appearance& observations, indicate what you see. For instance, "red, long, rod-shaped cells." Under Results indicate the correct term that goes along your observation. For the gram stain, it is sufficient to write the word "positive" or negative in this space.
When testing the efficacy of an antibiotic against bacteria on an agar plate, it is important to spread the bacteria evenly across the plate before you add the antibiotic. Why do the bacteria need to be applied evenly? None of the following are true All of the following are true If you add more bacteria in some areas compared to others, it might obscure the effect of the antibiotic If the area right next to the antibiotic initially received relatively few bacterial cells, that might lead you to overestimate the effectiveness of the antibiotic If the area right next to the antibiotic initially received a relatively large number of bacterial cells, that might lead you to underestimate the effectiveness of the antibiotic
Complete for Additional Differential Staining B: Negative staining ~ thin smear C: Endospore Stain
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Staining is often needed to distinguish the structure of cells as most cells are almost transparent. * true * false