Question

Exercise 7: Selective and Differential Growth Medium and Tests 6. What is the difference between opaque, translucent and transparent? opaque - colonie are not tamporent on trosoluent, they are impermiable to light Trarolucent colonies are almost clear but with a distanted mision Troroparent colonio are cled colonit without any detrotta 7. Why are growth characteristics more easily and readily analyzed on agar plates rather than agar slants? 8. Which has more utility in maintaining stock cultures agar dishes nutrient broth tubes or agar slant tubes? 9. How and why might temperature affect pigment? 10. If you have no growth in the nutrient broth or agar slant tube after the incubation period, what are some possible explanations?

Answer 1

6) opaque means this type of materials absorb all light which results in no penetration of light as we know penetration of light is dependent of the concentration of the materials so , opaque materials has the most particle density whereas translucent materia has medium particle density and thus allow medium light penetration whereas transparent material has the least particle density and thus allow light to penetrate totally.

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