Exam 3: Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

Which type of microscope is the most widely used and shows cells against a bright background?

If a microbiologist is studying a specimen at a total magnification of 950X,what is the magnifying power of the objective lens if the ocular lens is 10X?

The real image is the reverse of the actual specimen.

A differential interference contrast microscope uses dyes to give colored,three-dimensional images.

Which of the following is produced by adding 1% to 5% agar to nutrient broth that is then boiled and cooled?

Mixed cultures are also referred to as contaminated cultures.

Which type of microscope achieves the greatest resolution and highest magnification?

Which of the following is essential for the development of discrete,isolated colonies?

Which type of microscope bombards a whole,metal-coated specimen with electrons moving back and forth over it?

Bacteria that require special growth factors and complex nutrients are termed

A microbiologist makes a fixed smear of bacterial cells and stains them with Loeffler's methylene blue.All the cells appear blue under the oil lens.This is an example of

The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is

Which of the following magnifies the specimen to produce a real image of the specimen?

Agar is an important component of media because

For which bacterial genus is mannitol salt agar selective?

The bending of light rays as they pass from one medium to another is called refraction.

The wavelength of light used and the numerical aperture governs

Fluoresence microscopy uses a different wavelength of light to illuminate a specimen versus other types of microscopes.This results in:

All of the following are examples of different types of microbiological media except

Which of the following is not an inoculating tool?