The actual length of a cell is 50µm. When projected on the big screen in the class, the same cell is 2m long. What is the magnification factor of the cell on the screen? O 1 000x O4 000x 10 000x 40 000x

Q: Density gradient centrifugation is an inexpensive cell separation technique. Mention 2 limitations…

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Q: Use your knowledge of field diameter to calculate the diameter of a Paramecium that takes up 1/3 of…

A: This problem revolves around the calculation of the diameter of a Paramecium, a type of…

Q: Describe in detail all the steps needed to determine whether an Unknown bacteria has a Gram-positive…

A: Introduction: Gram staining is a method developed by Danish bacteriologist Hans Christian Gram in…

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Q: A student was observing a filament of blue green bacteria under low power (60X). The diameter of the…

A: A. Average length of one cell = 2.4 mm/ 40=0.06 mm Under 60X = 40 cells, each is 0.06 mm in length

Q: Look at the picture below to measure the size of the cells. 1. The following parameters were…

A: Based on the image, the 1000x magnification ruler shows increments marked at every 20 micrometers.…

Q: If this image were taken using the 40X objective, how long would this cell be?

A: On foucsing the 40X of the imaging, the length of the cells is 2.5 mm

Q: Please count the cells in grids 1, 3, 7, and 9. Calculate the cell density (a) and cell viability…

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Q: The benefits of the negative stain include:  Mark all that apply:   1. No shrinkage or distortion…

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Q: Beginning with 10 grams of plant tissue, order the following procedures (as steps 1-4) that you will…

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Q: These cells are human cheek epithelial cells. VWhat is their approximate cell size? Field Diameter =…

A: The average or approximate size of human cells are 100 micrometers or 0.1 millimeters.

Q: Which of the following statements is FALSE?   Question options:   stains increase the contrast of…

A: 3rd statement is false i.e the chromophore of an acidic dye is positively charged.

Q: Draw and label 3 cell types at low and high power. State the magnification for each one

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Q: What is the best wavelength to study light scattering with bacteria?     260 nm     260-280 nm…

A: 260-280 nm The best wavelength to study light scattering with bacteria depends on the specific…

Q: The actual length of a cell is 50µm. When projected on the big screen in the class, the same cell is…

A: Magnification factor is the quantitative expression of degree of enlargement of an image. From this…

Q: The series of photos above shows you plant cells when looked at with a light microscope. The first…

A: The light microscope is also known by the name of the optical microscope. This microscope uses…

Q: What is the the total magnification of a microscope that is set up using a 10x ocular lens and a 20x…

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Q: e fluorescent label in this image is he cell shapes are imaged with The microscopy used for…

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Q: A student counts 50 cells across the diameter of the field of view, and there are 70 rows of cells.…

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Q: Select all that apply to a negative stain: O uses only 1 dye in the procedure uses multiple dyes in…

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Q: Imagine you are using a microscope with 5x eye pieces (instead of 10x like ours). If you change from…

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Q: An ocular reticle measures 1.2 mm in length. At this same magnification, an unknown cell measures 3…

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Q: The benefits of the negative stain include: Mark all that apply: O No shrinkage or distortion of…

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Q: when viewing an organism under the 40x objective lens, you estimate that 6 organims could fit across…

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Q: If a slide has 28 yeast cells in a field of view on 100x, approximately how many yeast cells will be…

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Q: Answer the following questions: Why are most cells so small? Why cell size is limited? List…

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Q: Draw and estimate the length of a single Euglena (high power) and Paramecium (low power): Paramecium…

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Q: What is the main advantage of fluorescence polarization? Sensitivity of fluorescent probes Low cost…

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Q: A student has a compound microscope equipped with 10X ocular lenses and 4X, 10X, 40X and 100X…

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Microbial Isolation

Isolation of the microorganisms in microbiology is the process of developing a pure culture by separating one species of microbe from a mixture of many other species. A pure culture is a culture that contains only one species of microbe.