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MCQ Microbiology MCQ (How we see the Invisible World)

MCQ Microbiology MCQs With Answers

MCQ How we see the Invisible World

1. Which of the following has the highest energy?
a) light with a long wavelength
b) light with an intermediate wavelength
c) light with a short wavelength
d) It is impossible to tell from the information given.

2. You place a specimen under the microscope and notice that parts of the specimen begin to emit light immediately. These materials can be described as ____.
a) fluorescent
b) phosphorescent
c) transparent
d) opaque

3. Who was the first to describe “cells” in dead cork tissue?
a) Hans Janssen
b) Zaccharias Janssen
c) Antonie van Leeuwenhoek
d) Robert Hooke

4. Who is the probable inventor of the compound microscope?
a) Girolamo Fracastoro
b) Zaccharias Janssen
c) Antonie van Leeuwenhoek
d) Robert Hooke

5. Which would be the best choice for viewing internal structures of a living protist such as a Paramecium?
a) a brightfield microscope with a stain
b) a brightfield microscope without a stain
c) a darkfield microscope
d) a transmission electron microscope

6. Which type of microscope is especially useful for viewing thick structures such as biofilms?
a) a transmission electron microscope
b) a scanning electron microscopes
c) a phase-contrast microscope
d) a confocal scanning laser microscope
e) an atomic force microscope

7. Which type of microscope would be the best choice for viewing very small surface structures of a cell?
a) a transmission electron microscope
b) a scanning electron microscope
c) a brightfield microscope
d) a darkfield microscope
e) a phase-contrast microscope

8. What type of microscope uses an annular stop?
a) a transmission electron microscope
b) a scanning electron microscope
c) a brightfield microscope
d) a darkfield microscope
e) a phase-contrast microscope

9. What type of microscope uses a cone of light so that light only hits the specimen indirectly, producing a darker image on a brighter background?
a) a transmission electron microscope
b) a scanning electron microscope
c) a brightfield microscope
d) a darkfield microscope
e) a phase-contrast microscope

10. What mordant is used in Gram staining?
a) crystal violet
b) safranin
c) acid-alcohol
d) iodine

11. What is one difference between specimen preparation for a transmission electron microscope (TEM) and preparation for a scanning electron microscope (SEM)?
a) Only the TEM specimen requires sputter coating.
b) Only the SEM specimen requires sputter-coating.
c) Only the TEM specimen must be dehydrated.
d) Only the SEM specimen must be dehydrated.