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Microbiology

Description: Microbiology Microscopes SEM TEM Microscopy Methods in Microbiology
Number of Questions: 15
Created by: Varsha Mane
Tags: Microbiology Microscopes SEM TEM Microscopy Methods in Microbiology

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Who coined the term 'microscope'?

Galileo Galilei
Zacharias Janssen
Robert Hooke
Giovanni Faber
Antonie van Leeuwenhoek

The lens found in the eyepiece of a light microsope is called

diaphragm
ocular
nosepiece
coarse
condenser

Microscopes are parfocal. What does it mean?

The image will remain approximately in focus if the magnification changes.
The image will move from focus if the magnification changes.
Coarse knob is used to adjust the image.
Diaphragm is used to adjust the focus.
The image is seen with a dark background.

The Nobel Prize was awarded to Eric Betzig, William Moerner and Stefan Hell for development in which of the following fields?

Scanning electron microscopy
Scanning tunnelling microscopy
Fluorescence microscopy
Nomarski microscopy
Ballistic electron emission microscopy

Which part of a light microscope is used to regulate the amount of passing light?

Condenser
Diaphragm
Fine focus
Coarse
Mechanical stage

Which of the following microscopes uses gold coated aluminum stubs for specimen mounting?

Scanning electron microscope
Confocal microscope
Stereoscope microscope
Transmission electron microscope
Compound microscope

Which of the following options is an optical technique that increases the sensitivity of standard optical microscope to directly visualise nanometric films?

CMOS
SARFAS
CCD
Quartz
SNOM

What should be the respective magnifications for lens settings with objectives of 4x, 10x, 45x and 97x on a microscope with 15x oculars?

3.75x, 1.5x, 0.33x and 0.15x
0.26x, 0.66x, 3x and 6.46x
55x, 145x, 670x and 1450x
60x, 150x, 675x and 1455x
30x, 75x, 337.5x and 727.5x

Which of the following microscopes uses vaccum medium for microscopy?

Light microscope
Confocal microscope
Stereoscope microscope
Transmission electron microscope
Compound microscope

Which of the following microscopes manages focusing by digital computer motorised focusing mechanism?

Compound microscope
Stereoscope microscope
Confocal microscope
Scanning electron microscope
Transmission electron microscope

Which of the following microscopes produce(s) 3D images?

Stereoscope microscope
Confocal microscope
Scanning electron microscope
Transmission electron microscope
Both (1) and (3)

Match the following:


(a) Ernst Ruska	(i) Scanning tunnelling microscope
(b) Max Knoll	(ii) Atomic force microscope
(c) Gerd Binnig and Heinrich Rohrer	(iii) Transmission electron microscope
(d) Gerd Binnig, Quate and Gerber	(iv) Scanning electron microscope

(a) – (i), (b) – (ii), (c) – (iii), (d) – (iv)
(a) – (iii), (b) – (ii), (c) – (i), (d) – (iv)
(a) – (iii), (b) – (iv), (c) – (i), (d) – (ii)
(a) – (i), (b) – (iii), (c) – (ii), (d) – (iv)
(a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)

Why is immersion oil put between the slide and the lens in a compound microscope?

To prevent decrease in resolution
To prevent increase in resolution
To enhance decreasing resolution
To minimise the resolving power of condenser
None of these

Which of the following is an advantage of in-vivo staining?

It is used for colouring of cells or structures that have been removed from their biological context.
It reveals the locations where certain chemical reactions are taking place.
Techniques like fixation can be used as diagnostic tools.
Techniques like sampling can be used repeatedly.
It visualises fixed cells.

Which of the following microscopes uses laser light for providing specimen contrast?

Stereoscope microscope
Confocal microscope
Scanning electron microscope
Transmission electron microscope
Compound microscope

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