M3: Module 3 Exam- Requires Respondus LockDown Browser: Essential Microbiology with Lab- Straley.pdf

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BIOD 171 Quizzes M3: Module 3 Exam- Requires Respondus LockDown Browser ! M3: Module 3 Exam- Requires Respondus LockDown Browser Due No due date Points 100 Ques ! ons 20 Time Limit 60 Minutes Requires Respondus LockDown Browser This quiz is currently locked. A ! empt History A " empt Time Score LATEST A ! empt 1 46 minutes 97 out of 100 Score for this quiz: 97 out of 100 Submi ! ed Dec 6, 2020 at 6:28pm This a ! empt took 46 minutes. 5 / 5 pts Ques ! on 1 A nanometer is defined as: A. 10 B. 10 C. 10 D. 10 -3 -6 -9 -12 C. Correct! A. B. D. Your Answer: 10 / 10 pts Ques ! on 2 Resolu " on and contrast are two cri " cal factors that influence your ability to see an object. Explain each. The resolu " on is the distance between each object where the object can be viewed as seperate. If the objects are close to each other, the larger the resolu " on requirement will be to keep visualizing the two objects as seperate. The contrast is the di ff erence in the light absorbance between two objects or areas. The greater the contrast is between two object, the easier it will be to visualize. The lower the contrast is, between the object and it's background, the harder the visualiza " on will be in regards to the object. The type of microscope greatly influences the power of the resolu " on and thus the degree of contrast. Resolu ! on refers to the distance between two objects at which the objects s ! ll can be seen as separate. Poor or low resolu ! on means two (or more) objects may appear as one. Contrast is the di ff erence in light absorbance between two objects. Poor contrast gives a high background and makes the visualiza ! on of mul ! ple objects di cult. For instance, trying to iden ! fy 2 dark colored objects at night (low light = low contrast) versus the same 2 objects in the middle of a sunny a % ernoon (bright light against 2 dark objects = high contrast). 3 / 3 pts Ques ! on 3 Assuming a fixed ocular, iden " fy the part of the microscope you would adjust to enhance the magnifica " on of a sample. Objec " ve Correct!

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